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Abstract: A wide band patch antenna fed by an L-probe can be designed for dual- and multi-band application by cutting U-slots on the patch. Simulation and measurement results are presented to illustrate this design.


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The standard rectangular microstrip patch is a narrowband antenna and provides 6-8 dBi Gain with linear polarization.
In the process, the single wide response has been split into multiple narrow band regions catering to specific bands in the WiMAX standard.
These patch antennas have been probe-fed.
Building the Single U-Slot Patch Define Parameters The dual and multi band u slot patch antenna U-slot patch antenna consists of a rectangular patch radiator within which a U-shaped slot has been cut out.
The presence of the slot structure achieves additional capacitance within the structure which combines with the inductance of the long probe feed to create a double resonance within the band.
Boolean subtraction operation is used among the shape primitives for this purpose.
The groundplane in this case is rectangular and 71 mm x 52 mm in size.
Rectangle 'Length',Lgp, 'Width',Wgp ; Define stack Use the pcbStack to define the metal and dielectric layers and the feed for the single U-slot patch antenna.
The layers are defined top-down.
In this case, the top-most layer is a metal layer defined by the U-slot patch shape.
The second layer is a dielectric material, air in this case, and the third layer is the metal ground plane.
Compute and plot the reflection coefficient for this dual and multi band u slot patch antenna over the band.
The reflection coefficient is plotted with a reference impedance of 50 ohms.
To do so the existing slot parameters are adjusted and a second slot is introduced into the structure.
Create Double U-slot radiator As before use the shape primitives, to create the geometry by using Boolean operations.
Mesh and Plot Reflection Coefficient Mesh the structure at the highest frequency of operation and calculate the reflection coefficient.
Triple-Band U-slot Patch Antenna Parameters For triple-band operation a third U-slot is introduced and the existing slot parameters are adjusted.
Kishk, "The versatile U-slot patch go here 2009 3rd European Conference on Antennas and Propagation, Berlin, 2009, pp.
Lee, "Single-Layer Single-Patch Dual-Band and Triple-Band Patch Antennas," in IEEE Transactions on Antennas and Propagation, vol.
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A dual U slot H patch configuration is proposed to increase the narrow bandwidth, radiation efficiency and directivity. A novel H-shaped patch antenna suitable for wireless and satellite communications is presented. This paper presents the dual U slot H-shaped microstrip patch antenna feed by transmission line.


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Modeling and Analysis of Single Layer Multi-band U-Slot Patch Antenna - MATLAB & Simulink
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dual and multi band u slot patch antenna

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antenna consists of dual arrowhead slot on rectangular patch operating at multi-bands in the range from1.9 to 5.8 GHz..The antenna is probe feeded and it is simulated on IE3D Zeland software.The result of the antenna is analyzed by changing their flair angles (45,60,and 75 degree).


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The standard rectangular microstrip patch is a narrowband antenna and provides 6-8 dBi Gain with linear polarization.
In the process, the single wide response has been split into multiple narrow band regions catering to specific bands in the Dual and multi band u slot patch antenna standard.
These patch antennas have been probe-fed.
Building the Single U-Slot Patch Define Parameters The basic U-slot patch antenna consists of a rectangular patch radiator within which a U-shaped slot has been cut out.
The presence of the slot structure achieves additional capacitance within the structure which combines with the inductance of the long probe feed to create a double resonance within the band.
Boolean subtraction operation is used among the shape primitives for this purpose.
The groundplane in this case is rectangular and 71 mm x 52 mm in size.
Rectangle 'Length',Lgp, 'Width',Wgp ; Define stack Use the pcbStack to define the metal and dielectric layers and the feed for the single U-slot patch antenna.
The layers are defined top-down.
In this case, the top-most layer is a metal layer defined by the U-slot patch shape.
The second layer is a dielectric material, air in this case, and the third layer is the metal ground plane.
Compute and plot the reflection coefficient for this antenna over the band.
The reflection coefficient is plotted with a reference impedance of 50 ohms.
To do so the existing slot parameters are adjusted and a second slot is introduced into the structure.
Create Double U-slot radiator As before use the shape primitives, to create the geometry by using Boolean operations.
Mesh and Plot Reflection Coefficient Mesh the structure at the highest frequency of operation and calculate the reflection coefficient.
Triple-Band U-slot Patch Antenna Parameters For triple-band operation a third U-slot is introduced and the existing slot parameters are adjusted.
Kishk, "The versatile U-slot patch antenna," 2009 3rd European Conference click the following article Antennas and Propagation, Berlin, 2009, pp.
Lee, "Single-Layer Single-Patch Dual-Band and Triple-Band Patch Antennas," in IEEE Transactions on Antennas and Propagation, vol.
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width of the longer slot are 0.3cm and 0.05cm respectively. The length and width of the shorter slot are 0.1 and 0.05 respectively. The diameter of the feed is 0.05cm and the hieght is 0.16cm.The proposed antenna has three resonant modes and having a maximum gain of 8.4 Dbi. Design of U Slot Patch Antenna for Wi-max and Radar


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U-Slot Microstrip Patch Antenna for Wireless Application | Open Access Journals
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A Low Profile Multi-band U-shaped Aperture-coupled Microstrip Antenna with a Coil In this article, an L-shaped probe-fed, U-slot patch antenna with a coil element is studied. The L-shaped probe feed is used to enhance the impedance matching, which is necessary because of a low radiation resistance in the usable band. The coil contri...


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Modeling and Analysis of Single Layer Multi-band U-Slot Patch Antenna - MATLAB & Simulink
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Antenna-Theory.com Presents: Analysis of the Patch Antenna

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Slot Loaded Square Microstrip Patch Antenna for Dual Band Operation. Faria Jaheen1,*, Abdullah Al Noman Ovi. 2, Marjan Akhi. 3. 1. Department of Electrical & Electronics Engineering, American International University-Bangladesh, Dhaka, Bangladesh . 2. Department of Electrical & Electronics Engineering, Faculty of Engineering,


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U-Slot Microstrip Patch Antenna for Wireless Application | Open Access Journals
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Translated by Mouseover text to see original.
Click the button below to return to the English version of the page.
Note: This page has been translated by MathWorks.
To view all translated materials including this page, select Country from the country navigator on the bottom of this page.
Back to English MathWorks Machine Translation The automated translation of this page is provided by a general purpose third party translator tool.
MathWorks does not warrant, and disclaims all liability for, the accuracy, suitability, or fitness for purpose of the translation.
The standard rectangular microstrip patch is a narrowband antenna and provides 6-8 dBi Gain with linear polarization.
In the process, the single wide response has been split into multiple narrow band regions catering to specific bands in the WiMAX standard.
These patch antennas have been probe-fed.
Building the Single U-Slot Patch Define Parameters The basic U-slot patch antenna consists of a rectangular patch radiator within which a U-shaped slot has been cut out.
The presence of the slot structure achieves additional capacitance within the structure which combines with the inductance of the long probe feed to create a double resonance within the band.
Boolean subtraction operation deerfoot inn gift cards used among the shape primitives for this purpose.
The groundplane in this case is rectangular and 71 mm x 52 mm in size.
Rectangle 'Length',Lgp, 'Width',Wgp ; Define stack Use the pcbStack to define the metal and dielectric layers and the feed for dual and multi band u slot patch antenna single U-slot patch antenna.
The layers are defined top-down.
In this case, the top-most layer is a metal layer defined by the U-slot patch shape.
The second layer is a dielectric material, air in this case, and the third layer is the metal ground plane.
Compute and plot the reflection coefficient for this antenna over the band.
The reflection coefficient is plotted with a reference impedance of 50 ohms.
To do so the existing slot parameters are adjusted and a second slot is introduced into the structure.
Create Double U-slot radiator As before use the shape primitives, to create the geometry by using Boolean operations.
Mesh and Plot Reflection Coefficient Mesh the structure at the highest frequency of operation and calculate the reflection coefficient.
Triple-Band U-slot Patch Antenna Parameters For triple-band operation a third U-slot is introduced and the existing slot parameters are adjusted.
Kishk, "The versatile U-slot patch antenna," 2009 3rd European Conference on Antennas and Propagation, Berlin, 2009, pp.
Lee, "Single-Layer Single-Patch Dual-Band dual and multi band u slot patch antenna Triple-Band Patch Antennas," in IEEE Transactions on Antennas and Propagation, vol.
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A wide band patch antenna fed by an L-probe can be designed for dual- and multi-band applications by cutting U-slots on the patch. The half wavelength long U-slot resonates and introduces a band-notch.


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U-Slot Microstrip Patch Antenna for Wireless Application | Open Access Journals
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U-Slot Microstrip Patch Antenna for Wireless Application | Open Access Journals
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Translated by Mouseover text to see original.
Click the button below to return to the English version of the page.
Note: This page has been translated by MathWorks.
To view all translated materials including this page, select Country from the country navigator on the bottom of this page.
Back to English MathWorks Machine Translation The automated translation of this page is provided by a general purpose third party translator tool.
MathWorks does not warrant, and disclaims all liability for, the accuracy, suitability, or fitness for dual and multi band u slot patch antenna of the translation.
The standard rectangular microstrip patch is a narrowband antenna and provides 6-8 dBi Gain with linear polarization.
In the process, the single wide response has been split into multiple narrow band regions catering to specific bands in the WiMAX standard.
These patch antennas have been probe-fed.
Building the Single U-Slot Patch Define Parameters The basic U-slot patch antenna consists of a rectangular patch radiator within which a U-shaped slot has been cut out.
The presence of the slot structure achieves additional capacitance within the structure this web page combines with the inductance of the long probe feed to create a double resonance within the band.
Boolean subtraction operation is used among the shape primitives for this purpose.
The groundplane in this case is rectangular and 71 mm x 52 mm in https://entermarket.ru/and/monticello-ny-casino-and-raceway.html />Rectangle 'Length',Lgp, 'Width',Wgp this web page Define stack Use the pcbStack to define the metal and dielectric layers and the https://entermarket.ru/and/free-and-reduced-lunch-eligibility-guidelines.html for the single U-slot patch antenna.
The layers are defined top-down.
In this case, the top-most layer is a metal layer defined by the U-slot patch shape.
The second layer is a dielectric material, air in this case, and the third layer is the metal ground plane.
Compute and plot the reflection coefficient for this antenna over the band.
The reflection coefficient is plotted with a reference impedance of 50 ohms.
To do so the existing slot parameters are adjusted and a second slot is introduced into the dual and multi band u slot patch antenna />Create Double U-slot radiator As before use the shape primitives, to create the geometry by using Boolean operations.
Mesh and Plot Reflection Coefficient Mesh the structure at the highest frequency of operation and calculate the reflection coefficient.
Triple-Band U-slot Patch Antenna Parameters For triple-band operation a third U-slot is introduced and the existing slot parameters are adjusted.
Kishk, "The versatile U-slot patch antenna," dual and multi band u slot patch antenna 3rd European Conference on Antennas and Propagation, Berlin, 2009, pp.
Lee, "Single-Layer Single-Patch Dual-Band and Triple-Band Patch Antennas," in IEEE Transactions on Antennas and Propagation, vol.
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FIELD OF THE INVENTION. The present invention relates to an antenna assembly suitable for wireless transmission of analog and/or digital data, and more particularly to a combination of a microstrip patch and a bowtie slot antenna radiating element enabling operation at dual frequency bands and featuring high gain in each band


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U-Slot Rectangular Patch Antenna for Dual Band Application | SpringerLink
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Authors are requested to submit articles directly to of respective journal.
U-Slot Microstrip Patch Antenna for Wireless Application J.
Tech, Department of Electronic and Communication Engineering, Dr.
S Paul Memorial College of Engineering and Technology, Pondicherry, India Related article atVisit for more related articles at Abstract The main objective of this paper is to simulate and design a single u-shaped microstrip patch antenna with operating frequency of 5.
This type of antenna has to be designed using a substrate having a low dielectric constant in order to achieve low return loss.
The microstrip antenna consists of the rectangular patch on the top of the dielectric substrate and over which a u-shaped slot has been made to reduce the size of the antenna.
The reduction in the size of the antenna results in improved gain and the return loss of the antenna.
Therefore, the single u-shaped microstrip patch antenna has a broad bandwidth and can be used for wireless applications.
The antenna has been simulated using HFSS High frequency synthetic simulator software, a 3D simulator which shows the accurate simulated result compared with other simulation software.
KEYWORDS single U slot antenna, RT duroid 5880 substrate, HFSS software, 3D simulator, gain, return loss.
INTRODUCTION James Clark Maxwell, in 1860, has combined electricity and magnetism into electromagnetism and he predicted the existence of electromagnetic waves at radio frequencies which is at much lower frequencies than light.
An early form of radio detector is called coheror which consists of a glass tube loosely filled with metal and its electrical resistance is dual and multi band u slot patch antenna in the presence of radio waves.
Coheror is used for the detection of electromagnetic waves.
Guglielmo Marconi grasped the hertz experiment and started his research with wireless telegraphy which lead to the discovery of wireless communication started with coheror.
To the coheror, a long wave wire antenna is connected which can be used to transmit or receive the electromagnetic waves.
The antenna which transmits and receives only in the horizontal direction is called as Omni-directional antenna and the antenna which transmits or receives in the particular direction is called as directional antenna.
Electric charges are the source of electromagnetic fields.
When these sources are time varying, the electromagnetic waves propagate away from the source and radiation takes place.
Radiation is the process of transmitting energy.
Globally, there is a drastic revolution in the communication world.
Therefore, in order to make effective communication, antennas play a major role.
An antenna is generally a transducer which transmits and receives the electromagnetic waves.
In other words, Antenna is defined as a device which converts electric current into electromagnetic waves at the transmitting side and vice versa at the receiving side.
The following are the types of antenna which includes dual and multi band u slot patch antenna antenna, aperture antenna, reflector antenna, microstrip antenna, Rhombic or travelling wave antenna, Pyramidal horn antenna, Parabolic dish reflector, coplanar strip horn antenna and each antenna have their specific characteristics.
Due to its important characteristic of compact size, the microstrip antenna is chosen to fulfill the needs of the modern technologists.
In order to achieve effective radiation of antenna, the designed antenna must have a substrate of low dielectric constant therefore RT duroid is chosen and which results in the better performance of antenna and provides better efficiency, larger bandwidth and better radiation with reduced number of side lobes.
The dielectric constant for the RT duroid 5880 is 2.
The input is given using different feed techniques and different feeding methods are available to feed microstrip patch antenna.
The radio frequency power is fed directly to the radiating patch using microstrip line feed method.
There are many feeding techniques, which includes microstrip line feed, coaxial line feed, aperture coupling and proximity coupling method.
In the microstrip line feed, a conducting strip is connected dual and multi band u slot patch antenna to the center of the patch by etching the substrate and the conducting strip should be smaller in width when compared with the width of the microstrip patch.
The inset cut is made in the patch to increase the radiation of the antenna.
In the coaxial line feed technique, the inner conductor of the coaxial strip extends throughout the dielectric and is soldered to the radiating patch, while the outer conductor is coupled to the ground plane.
Eventhough the feeding can be given at any desired location inside the patch, the modeling will be difficult using this technique.
In the aperture coupled feed, the radiating patch and the microstrip feed line are separated by the ground plane.
In this technique, the patch and the feed line is coupled with the ground plane through the slot.
The slot should be placed at the centre in order to have low cross polarization but due to multiple layers and the increased thickness, the antenna fabrication is difficult.
In the proximity coupled feed, which is otherwise called as the electromagnetic coupling, two dielectric substrates are used and the feed line is between the two substrates among which the radiating patch is on the top of the upper substrate and slotomania bonuses and promotions ground plane is on the lower substrate.
Using this technique, the unwanted radiations can be eliminated but the antenna fabrication is difficult because of the two dielectric substrates.
Therefore, the microstrip line feed has been chosen for the rectangular microstrip antenna for better radiation and it is designed using the operating frequency of 5.
Circular patches printed on RT Duroid were used, with glass laminated superstrates which excited surface waves of between 10% and 20% of the input power.
Patches and microwave circuits within the glass laminate will introduce even more uncertainty into the resonant frequency and bandwidth.
Overall, this could be a significant problem for microstrip antennas on automotive glass where communication bands demand bandwidths of 5% and above.
Dual-frequency planar antenna for handsets is presented by Chiba et al.
A Wide-Band Single-Layer Patch Antenna is presented by Naphtali Herscovici.
A new type of patch element is presented.
The patch is suspended over the ground plane and supported by a nonconductive pin.
It dual and multi band u slot patch antenna fed by a threedimensional 3-D transition connecting the patch to a perpendicular connector.
For many applications, this geometry eliminates the need for the parasitic elements and the dielectric dual and multi band u slot patch antenna necessary to support them.
Design and Performance of Small Printed Antennas are presented by Waterhouse et al.
In this paper, electrically small microstrip patches incorporating shorting posts are please click for source investigated.
These antennas are suitable for mobile communications handsets where limited antenna size is a premium.
Techniques to enhance the bandwidth of these antennas are presented and performance trends are established.
From these trends, valuable insight to the optimum design, namely broad bandwidth, small size, and ease of manufacturing, is given.
It is designed by using two semi-discs with single feeding.
The antenna is circularly polarized and suitable for mobile satellite communications and if fed as individual semi-rings as a dual band orthogonally polarized antenna.
The thickness has a strong effect on impedance matching at high frequencies owing to the ratio between the thickness and the wavelength, which increases with frequency.
SCOPE OF RESEARCH The aim of the project is to design u-slot rectangular microstrip Patch antenna and to study their radiation pattern, return loss, VSWR, gain and directivity.
Length and Width of the antenna can be predicted using the design equation.
Microstrip antenna is simulated by Ansoft HFSS software which has its operating frequency range 5.
As in modern communication is concerned in size reduction and portability, miniaturization and good cost to quality ratio are the main things in our project.
PROPOSED METHODOLOGY AND DISCUSSION Here the existing system design parameter has been calculated and the designed frequency of 5.
The dielectric material selected for this design is RT duroid 5880.
The design specifications for patch are below: ΓƒΒ―Γ‚ΒƒΓ‚Β˜ Dielectric constant-2.
The microstrip antenna having single u-shaped slot on the patch is fed by 50Ξ© microstrip line and the main advantage visit web page using the microstrip line feeding is that its ease of fabrication and the impedance matching is simple by controlling the inset cut position and the method is relatively simple.
DESIGN PARAMETERS: The various design parameters are calculated as follows: 1.
Effective permittivity Ξ΅reff 3.
Effective length Leff 4.
Delta length Ξ”L 5.
Actual length L 6.
Width of the ground Wg 7.
Length of the ground Lg These parameters are calculated for operating frequency of 5.
It has RT duroid 4880 as the dielectric substrate which has the relative permittivity which is equal to 2.
EXPERIMENTAL RESULTS There are some parameters that affect the antenna performance in which two of them have a very noticeable effect in determining the performance of the antenna.
The return loss has become efficient according to the parameter changes and these parameter effects will be explained and summarized in this section.
RETURN LOSS: The return loss for the proposed system is shown Fig 3 shows the return loss for the single u-slot antenna which freebies and android the simulated result.
From the Fig 3, it can be shown that the U-slot microstrip patch antenna at 5.
The graph is plotted for frequency in GHz versus return loss in dB.
The graph is plotted for the frequency ranges from 4.
Since the antenna has been designed for 5.
The impedance mismatch occurs from 4.
RADIATION PATTERN The designed antenna is radiating all its power in one direction and therefore the optimized antenna has result with the effective radiation pattern and therefore the side lobes or nulls in the pattern has been minimized and the better directivity is achieved.
The radiation pattern for the proposed system antenna has angles in phi and theta.
In the figure, phi is represented in red colour and theta is represented in purple colour.
The antenna is radiated from the angle of 45 degrees and has the magnitude of 7.
CONCLUSION The proposed antenna explains and illustrates the simulation of the microstrip antenna with single u-shaped slot on the patch.
This antenna is compact, have a flexible structure and easy to use compared with other antennas.
Thus, the very low return loss of less than -12dB is achieved which is suitable for the wireless applications and in the c-band of satellite communication systems.
This antenna has been simulated for the frequency of 5.
ACKNOWLEDGMENTS We thank our HOD Dr.
Department of Electronics and Communication Engineering to help us for creating this paper with his sincere guidance and Technical Expertise in the field dual and multi band u slot patch antenna communication.
The help of our guide Mr.
Tech, Department of ECE, Dr, SJS Paul College of Engineering and Technology is really immense and once again I thank her for her great motivation.
SJS Paul College of Engineering and Technology to provide me such a standard educational environment so that I am able to understand the minute concepts in the field of Engineering and Technology.
IEEE transaction on antenna and propogation, Vol 61, No: 3, match 2013.
Mirul Islam, Sohay Kumr saha, Md.
International Journal of Science and technology Research IJSETRVolume 2, Issue 2, February 2013.
Considerations for millimeter dual and multi band u slot patch antenna printed antennas.
IEEETransactions on Antennas and Propagation, 31 5 :740{747, 1983.

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Design of Multi-band U-Slot Microstrip Patch Antenna for GSM /WLAN and WiMAX Applications Osama W. Ata1, Mohammad Salamin2, Khaleel Abusabha3 1, 2, 3 Electrical Engineering Dept., Palestine Polytechnic University, Hebron, Palestine, [email protected]


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Translated by Mouseover text to see original.
Click the button below to return to the English version of the page.
Note: This page has been translated by MathWorks.
To view all translated materials including this page, select Country from the country navigator on the bottom of this page.
Back to English MathWorks Machine Translation The automated translation of this page is provided by a general purpose third party translator tool.
The standard rectangular microstrip patch is a narrowband antenna and provides 6-8 dBi Gain with linear polarization.
In the process, the single wide response has been split into multiple narrow band regions catering to specific bands in the WiMAX standard.
These patch antennas have been probe-fed.
Building the Single U-Slot Patch Define Parameters The basic U-slot patch antenna consists of a rectangular patch radiator within which a U-shaped slot has been cut out.
The presence of the slot structure achieves additional capacitance within the structure which combines with the inductance of the long probe feed to create a double resonance within the band.
Boolean subtraction operation is used among the shape primitives for this purpose.
The groundplane in this case is rectangular and 71 mm x 52 mm in size.
Rectangle 'Length',Lgp, 'Width',Wgp ; Define stack Use the pcbStack to define the metal and dielectric layers and the feed for the single U-slot patch antenna.
The layers are defined top-down.
In this case, the top-most layer is a metal check this out defined by the U-slot patch shape.
The second layer is a dielectric material, air in this case, and the third layer is the metal ground plane.
Compute and plot the reflection coefficient for this antenna over the band.
The reflection coefficient is plotted with a reference impedance of 50 ohms.
To dual and multi band u slot patch antenna so the existing slot parameters are adjusted and a second slot is introduced into the structure.
Create Double U-slot radiator As before use click to see more shape primitives, to create the geometry by using Boolean operations.
Mesh and Plot Reflection Coefficient Mesh the structure at the highest frequency of operation and calculate dual and multi band u slot patch antenna reflection coefficient.
Triple-Band U-slot Patch Antenna Parameters For triple-band operation a third U-slot is introduced and the existing slot parameters are adjusted.
Kishk, "The versatile U-slot patch antenna," 2009 3rd European Conference on Antennas and Propagation, Berlin, 2009, pp.
Lee, "Single-Layer Single-Patch Dual-Band and Triple-Band Patch Antennas," in IEEE Transactions on Antennas and Propagation, vol.
You clicked a link that corresponds to this MATLAB command: Run the command by entering it in the MATLAB Command Window.
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Select a Web Site Choose a web site to get translated content where available and see local events and offers.
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The models of the multi-band single layer U-slot patch antenna as discussed in [1], and [2] have been built and analyzed and agree well with results reported. Reference [1] K. F. Lee, S. L. S. Yang and A. Kishk, "The versatile U-slot patch antenna," 2009 3rd European Conference on Antennas and Propagation, Berlin, 2009, pp. 3312-3314.


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width of the longer slot are 0.3cm and 0.05cm respectively. The length and width of the shorter slot are 0.1 and 0.05 respectively. The diameter of the feed is 0.05cm and the hieght is 0.16cm.The proposed antenna has three resonant modes and having a maximum gain of 8.4 Dbi. Design of U Slot Patch Antenna for Wi-max and Radar


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The microstrip antenna can be slotted to achieve multi band, and the slot form is varied. The key of the design is to adopt the appropriate slotting form. The effects of different slot forms on the performance of the antenna are discussed in the following.


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Modeling and Analysis of Single Layer Multi-band U-Slot Patch Antenna - MATLAB & Simulink
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The standard rectangular microstrip patch is a narrowband antenna and provides 6-8 dBi Gain with linear polarization.
In dual and multi band u slot patch antenna process, the single wide response has been split into multiple narrow band regions catering to specific bands in the WiMAX standard.
These patch antennas have been probe-fed.
Building the Single U-Slot Patch Define Parameters The basic U-slot patch antenna consists of a rectangular patch radiator within which a U-shaped slot has been cut out.
The presence of the slot structure achieves additional capacitance within the structure which combines with the inductance of the long probe feed to create a double resonance within the band.
Boolean subtraction operation is used among the shape primitives for this purpose.
The groundplane in this case is rectangular and 71 mm x 52 mm in size.
Rectangle 'Length',Lgp, 'Width',Wgp ; Define stack Use the pcbStack to define the metal and dielectric layers and the feed for the single U-slot patch antenna.
The layers are defined top-down.
In this case, the top-most layer is a metal layer defined by the U-slot dual and multi band u slot patch antenna shape.
The second layer is a dielectric material, air in this case, and the third layer is the metal ground plane.
Compute and plot the reflection coefficient for this antenna over the band.
The reflection coefficient is plotted with a reference impedance of 50 ohms.
To do so the existing slot parameters are adjusted and a second slot is introduced into the structure.
Create Double U-slot radiator As before dual and multi band u slot patch antenna the shape primitives, to create the geometry by using Boolean operations.
Mesh and Plot Reflection Coefficient Mesh the structure at the highest frequency of operation and calculate the reflection coefficient.
Triple-Band U-slot Patch Antenna Parameters For triple-band operation a third U-slot is introduced and the existing slot parameters are adjusted.
Kishk, "The versatile U-slot patch antenna," 2009 3rd European Conference on Antennas and Propagation, Article source, 2009, pp.
Lee, "Single-Layer Single-Patch Dual-Band and Triple-Band Patch Antennas," in IEEE Transactions on Antennas and Propagation, vol.
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Multi-Band U-Slot Microstrip Patch Antenna with Defective Ground Base 1129 Fig.1.Geometry of the proposed U-Slot Microstrip Patch Antenna: (a) top view; (b) side view Simulated Results In this section, the simulation and analysis is done for the proposed multi-beam U-slot microstrip patch antenna by Ansoft HFSS simulation software.


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U-Slot Microstrip Patch Antenna for Wireless Application J.
Tech, Department of Electronic and Communication Engineering, Dr.
S Paul Memorial College of Engineering and Technology, Pondicherry, India Related article atVisit for more related articles at Abstract The main objective of this paper is to simulate and design a single u-shaped microstrip patch antenna with operating frequency of 5.
This type of antenna has to be designed using a substrate having a low dielectric constant in order to achieve low return loss.
The microstrip antenna consists of the rectangular patch on the top of the dielectric substrate and over which a u-shaped slot has been made to reduce the size of the antenna.
The reduction in the size of the antenna results in improved gain and the return loss of the antenna.
Therefore, the single u-shaped microstrip patch antenna has a broad bandwidth and can be used for wireless applications.
The antenna has been simulated using HFSS High frequency synthetic simulator software, a 3D simulator which shows the accurate simulated result compared with other simulation software.
KEYWORDS single U slot antenna, RT duroid 5880 substrate, HFSS software, 3D simulator, gain, return loss.
INTRODUCTION James Clark Maxwell, in 1860, has combined electricity and magnetism into electromagnetism and he predicted the existence of electromagnetic waves at radio frequencies dual and multi band u slot patch antenna is at much lower frequencies than light.
An early form of radio learn more here is called coheror which consists of a glass tube loosely filled with metal and its electrical resistance is decreased dual and multi band u slot patch antenna the presence of radio waves.
Coheror is used for the detection of electromagnetic waves.
Guglielmo Marconi grasped the hertz experiment and started his research with wireless telegraphy which lead to the discovery of wireless communication started with coheror.
To the coheror, a long wave wire antenna is connected which can be used to transmit or receive the electromagnetic waves.
The antenna which transmits and receives only in the horizontal direction is called as Omni-directional antenna and the antenna which transmits or receives in the particular direction is called as directional antenna.
Electric charges are the source of electromagnetic fields.
When these sources are time varying, the electromagnetic waves propagate away from the source and radiation takes place.
Radiation is the dual and multi band u slot patch antenna of transmitting energy.
Globally, there is a drastic revolution in the communication world.
Therefore, in order to make effective communication, antennas play a major role.
An antenna is generally a transducer which transmits and receives the electromagnetic waves.
In other words, Antenna is defined as a device which converts electric current into electromagnetic waves at the transmitting side and vice versa at the receiving side.
The following are the types of antenna which includes wired antenna, aperture antenna, reflector antenna, microstrip antenna, Rhombic or travelling wave antenna, Pyramidal horn antenna, Parabolic dish reflector, coplanar strip horn antenna and each antenna have their specific characteristics.
Due to its important characteristic of compact size, the microstrip antenna is chosen to fulfill the needs of the modern technologists.
In order to achieve effective radiation of antenna, the designed antenna must have a substrate of low dielectric constant therefore RT duroid is chosen and which results in the better performance of antenna and provides better efficiency, larger bandwidth and better radiation with reduced number of side lobes.
The dielectric constant for the RT duroid 5880 is 2.
The input is given using different feed techniques and different feeding methods are available to feed microstrip patch antenna.
The radio frequency power is fed directly to the radiating patch using microstrip line feed method.
There are many feeding techniques, which includes microstrip line feed, coaxial line feed, aperture coupling and proximity coupling method.
In the microstrip line feed, a conducting strip is connected directly to the center of the patch by etching the substrate and the conducting strip should be smaller in width when compared with the width of the microstrip patch.
The inset cut is made in the patch to increase the radiation of the antenna.
In the coaxial line feed technique, the inner conductor of the coaxial strip extends throughout the dielectric and is soldered to the radiating patch, while the outer conductor is coupled to the ground plane.
Eventhough the feeding can be given at any desired location inside the patch, the modeling will be difficult using this technique.
In the aperture coupled feed, the radiating patch and the microstrip feed line are separated by the ground plane.
In this technique, the patch and the feed line is coupled with the ground plane through the slot.
The slot should be placed at the centre in order to have low cross polarization but due to multiple layers and the increased thickness, the antenna fabrication is difficult.
In the proximity dual and multi band u slot patch antenna feed, which is otherwise called as the electromagnetic coupling, two dielectric substrates are used and the feed line is between the two substrates among which the radiating patch is on the top of the upper substrate and the ground plane is on the lower substrate.
Using this technique, the unwanted radiations can be eliminated but the antenna fabrication is difficult because of the two dielectric substrates.
Therefore, the microstrip line feed has been chosen for the rectangular microstrip please click for source for better radiation and it is designed using the operating frequency of 5.
Circular patches printed on RT Duroid were used, with glass laminated superstrates which excited surface waves of between 10% and 20% of the input power.
Patches and microwave circuits within the glass laminate will introduce even more uncertainty into the and m slot machine frequency and bandwidth.
Overall, this could be a significant problem for microstrip antennas on automotive glass where communication bands demand bandwidths of 5% and above.
Dual-frequency planar antenna for handsets is presented by Chiba et al.
A Wide-Band Single-Layer Patch Antenna is presented by Naphtali Herscovici.
A new type of patch element is presented.
The patch is suspended over the ground plane and supported by a nonconductive pin.
It is fed by a threedimensional 3-D transition connecting the patch to a perpendicular connector.
For many applications, this geometry eliminates the need for the parasitic elements and the dielectric substrate necessary to support them.
Design this web page Performance of Small Printed Antennas are presented by Waterhouse et al.
In click the following article paper, electrically small microstrip patches incorporating shorting posts are thoroughly investigated.
These antennas are suitable for mobile communications handsets where limited antenna size is a premium.
Techniques to enhance the bandwidth of these antennas are presented and performance trends are established.
From these trends, valuable insight to the optimum design, namely broad dual and multi band u slot patch antenna, small size, and ease of manufacturing, is given.
It is designed by using two semi-discs with single feeding.
The antenna is circularly polarized and suitable for mobile satellite communications and if fed as individual semi-rings as a dual band orthogonally polarized antenna.
The thickness has a strong effect on impedance matching at high frequencies owing to the ratio between the thickness and the wavelength, which increases with frequency.
SCOPE OF RESEARCH The aim of the project is to design u-slot rectangular microstrip Patch antenna and to study their radiation pattern, return loss, VSWR, gain and directivity.
Length and Width of the antenna can be predicted using the design equation.
Microstrip antenna is simulated by Ansoft HFSS software which has its operating frequency range 5.
As in modern communication is concerned in size reduction and portability, miniaturization and good cost to quality ratio are the main things in our project.
PROPOSED METHODOLOGY AND DISCUSSION Here the existing system design parameter has been calculated and the designed frequency of 5.
The dielectric material selected for this design is RT duroid 5880.
The design dual and multi band u slot patch antenna for patch are below: ΓƒΒ―Γ‚ΒƒΓ‚Β˜ Dielectric constant-2.
The microstrip antenna having single u-shaped slot on the patch is fed by 50Ξ© microstrip line and the main advantage of using the microstrip line feeding is that its ease of fabrication and the impedance matching is simple by controlling the inset cut position and the visit web page is relatively simple.
DESIGN PARAMETERS: The various design parameters are calculated as follows: 1.
Effective permittivity Ξ΅reff 3.
Effective length Leff 4.
Delta length Ξ”L 5.
Actual length L 6.
Width of the ground Wg 7.
Length of the ground Lg These parameters are calculated for operating frequency of 5.
It has RT duroid 4880 as the dielectric substrate which has the relative permittivity which is equal to 2.
EXPERIMENTAL RESULTS There are some parameters that affect the antenna performance in which two of them have a very noticeable effect in determining the performance of the antenna.
The return loss has become efficient according to the parameter changes and these parameter effects will be explained and dual and multi band u slot patch antenna in this section.
RETURN LOSS: The return loss for the proposed system is shown Fig 3 shows the return loss for the single u-slot antenna which is the simulated result.
From the Fig 3, it can be shown that the U-slot microstrip patch antenna at 5.
The graph is plotted for frequency in GHz versus return loss in dB.
The graph is plotted for the frequency ranges from 4.
Since the antenna has been designed for 5.
The impedance mismatch occurs from 4.
RADIATION PATTERN The designed antenna is radiating all its power in one direction and therefore the optimized antenna has result with the effective radiation pattern and therefore the side lobes or nulls in the pattern has been minimized and the better directivity is achieved.
The radiation pattern for the proposed system antenna has angles in phi and theta.
In the figure, phi is represented in red colour and theta is represented in purple colour.
The antenna is radiated from the angle of 45 degrees and has the magnitude of 7.
CONCLUSION The proposed antenna explains and illustrates the simulation of the microstrip antenna with single u-shaped slot on the patch.
This antenna is compact, have a flexible structure and easy to use compared with other antennas.
Thus, the very low return loss of less than -12dB is achieved which is suitable for the wireless applications and in the c-band of satellite communication systems.
This antenna has been simulated for the frequency of 5.
ACKNOWLEDGMENTS We thank our HOD Dr.
Department of Electronics and Communication Engineering to help us for creating this paper with his sincere guidance and Technical Expertise in the field of communication.
The help of our guide Mr.
Tech, Department of ECE, Dr, SJS Paul College of Engineering and Technology is really immense and once again I thank her for her great motivation.
SJS Paul College of Engineering and Technology to provide me such a standard educational environment so that I am able to understand the minute concepts in the field of Engineering and Technology.
IEEE transaction on antenna and propogation, Vol 61, No: 3, match 2013.
Mirul Islam, Sohay Kumr saha, Md.
International Journal of Science and technology Research IJSETRVolume 2, Issue 2, February 2013.
Considerations for millimeter wave printed antennas.
IEEETransactions on Antennas and Propagation, 31 5 :740{747, 1983.

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L-shaped slots and two U-shaped slots on the radiating patch. The antenna resonates in desired frequency bands with acceptable gain and omnidirectional radiation pattern. A folded slot and colocated multi- -band antenna is presented in [17]. The antenna contains three slots arranged in a columnar structure.


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1995, two scientists named as Huynh and Lee was presented a broad band single layer probe fed patch antenna with a U -shaped slot on the surface of the rectangular patch [7]. In this paper, we design a rectangular micro -strip patch antenna in which U shaped slots are cut in micro -strip patch to enhance its bandwidth and frequency response.


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U-Slot Rectangular Patch Antenna for Dual Band Application | SpringerLink
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ERROR: The requested URL could not be retrieved
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Translated by Mouseover text to see original.
Click the button below to return to the English version of the page.
Note: This page has been translated by MathWorks.
please click for source view all translated materials including this page, select Country from the country navigator on the bottom of this page.
Back to English MathWorks Machine Translation The automated translation of this page is provided by a general purpose third party translator tool.
MathWorks does not warrant, and disclaims all liability for, the accuracy, suitability, or fitness for purpose of the translation.
The standard rectangular microstrip patch is a narrowband antenna and provides 6-8 dBi Gain with linear polarization.
In the process, the single wide response has been split into multiple narrow band dual and multi band u slot patch antenna catering to specific bands in the WiMAX standard.
These patch antennas have been probe-fed.
Building the Single U-Slot Patch Define Parameters The basic U-slot patch antenna consists of a rectangular dual and multi band u slot patch antenna radiator within which a U-shaped slot has been cut out.
The presence of the slot structure achieves additional capacitance within the structure which combines with the inductance of the long probe feed to create a double resonance within the band.
Boolean subtraction operation is used among the shape primitives for this purpose.
The groundplane in this case is rectangular and 71 mm x 52 mm in size.
Rectangle 'Length',Lgp, 'Width',Wgp ; Define stack Use the pcbStack to define the metal and dielectric layers and the feed for the single U-slot patch antenna.
The layers are defined top-down.
In this case, the top-most layer is a metal layer defined by the U-slot patch shape.
The second layer is a dielectric material, air in this case, and the third layer is the metal ground plane.
Compute and plot the reflection coefficient for this antenna over the band.
The reflection coefficient is plotted with a reference impedance of 50 ohms.
To do so the existing slot parameters are adjusted and a second slot is introduced into the structure.
Create Double U-slot radiator As before use the shape primitives, to create the geometry by using Boolean operations.
Mesh and Plot Reflection Coefficient Mesh the structure at the highest frequency of operation and calculate the reflection coefficient.
Triple-Band U-slot Patch Antenna Parameters For triple-band operation a third U-slot is introduced and the existing slot parameters are adjusted.
Kishk, "The versatile U-slot patch antenna," 2009 3rd European Conference on Antennas and Propagation, Berlin, 2009, pp.
Lee, "Single-Layer Single-Patch Dual-Band and Triple-Band Patch Antennas," in IEEE Transactions on Antennas and Propagation, vol.
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An IEEE Fellow, he was the recipient of the 2009 John Kraus Antenna Award of the IEEE Antennas and Propagation Society for exceptional contributions to the field of antennas. He invented the wideband U–slot patch antenna and expanded the U-slot technique to small size, dual/triple band, and circular polarization applications.


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band, resulting in a dual band antenna . If another U-slot is etched on the same patch it results into a triple-band antenna. In this paper the U slot method is utilized to achieve dual and triple band rectangular patches with microstrip feed for WLAN and GSM applications.


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Dual and multi-band rectangular microstrip antennas can be realized by cutting U-slots inside the patch. In this paper, the length and width of U-slots are optimized in order to achieve dual-band and multi-band operation. Computer Simulation Technology (CST) software was used to design, simulate and optimization of antenna.


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U-Slot Microstrip Patch Antenna for Wireless Application | Open Access Journals
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IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, VOL. 61, NO. 3, MARCH 2013 1415 Wide Band Dual-Beam U-Slot Microstrip Antenna Ahmed Khidre, Kai-Fong Lee, Atef Z. Elsherbeni, and Fan Yang


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