This tutorial will help beginners and advanced users to create, simulate and analyze a probe feed patch antenna in ansys hfss. Hi all, i am trying to simulate a basic patch antenna which is mentioned in attached paper called regular model and shown its measurement in pg. The basics of patch antennas, updated orban microwave. Hfss model of microstrip antenna with rectangular patch the simulation of the rectangular patch antenna by means of hfss, it was found that the band is. Antenna configuration the antenna is simulated on rogers tmm4 substrate with a dielectric constant of 4. Optimization and return loss reduction of micro strip patch antenna. How to calculate scattering with febi region in hfss duration. Introduction microstrip patch antenna is used due to its many advantages like small in size, easily installable and. Proposed rectangular microstrip patch antenna using hfss software.
Jun 03, 2015 in order to design a microstrip patch antenna at first the designer is to select the substrate material and its thickness. Ec 4th year shivanshu awasthi ec 4th year sarvesh kumar nishad ec 4th year novman asif ec 4th year. Dissimilarity in fem results of resonant patch antenna keysight. Ansys hfss is a 3d electromagnetic em simulation software for designing and simulating highfrequency electronic products such as antennas, antenna arrays, rf or microwave components, highspeed interconnects, filters, connectors, ic packages and printed circuit boards. The return loss and the various gain plots have been studied along with the radiation patterns. Example antenna postprocessing analysis of a dual polarized probe fed patch antenna this example is intended to show you how antenna postprocessing works in hfss. One notices according to the study of the patch antenna in form p which the bandwidth varies if one considers various levels of s11.
Multislot microstrip antenna for ultrawide band applications. Bandwidth improvement for compact microstrip patch antenna. Patch antenna design part1basics of antenna design using hfss software. The feed type and feed position of a patch antenna vary the input impedance. The design and simulation of patch antennas is widely used in mobile cellular phones today, and our emphasis in this work is on optimization of a 2. In this section, well discuss the microstrip antenna, which is also commonly referred to as the patch antenna. This work presents the design of a circular patch antenna for gsm1800 band. But the resonant frequency and return loss value are completely different. And all other properties as can be seen in the attached hfss file. First the model of the microstrip patch antenna has to be drawn in hfss. S11 is known as the return loss, or how much power is reflected from the transmitter to an antenna.
Analysis and design of rectangular microstrip patch antenna. Microstrip patch antenna design santa clara university. Probe feed patch antenna 4 probe feed patch antenna als tab. S11 return loss, 2d radiation pattern, impedance bandwidth, 3db beamwidth, gain and other antenna parameters. Mar 07, 2016 hfss microstrip patch antenna analysis and design 1. Directional patch antenna array design for desktop wireless internet. When i have simulated it in hfss with a resonant frequency of 9. Without a reasonable impedance match, the antenna will not radiate much, if any, power. The figure below shows a sample patch antenna that was simulated in hfss.
The 2x2 patch array antenna is simulated using ansoft hfss. Determining input impedance of patch antenna in hfss. Proposed rectangular microstrip patch antenna using hfss software v. Design of a rectangular patch antenna with a photonic crystal. The necessary steps were carried out by sweeping and iterations of the patch antenna size from 107 mm to 120 mm and the following results were obtained. I got a good results for return loss s11 hfss for verification. The microstrip line model method is used and been simulated by using hfss software. S22 would be the reflected power radio 2 is attempting to deliver to antenna 2. This workshop includes an optional section, understanding far field quantities. The antenna resonated at 931 mhz with a return loss of 14. Feb 11, 2015 this video covers the implementation of a 10 ghz rectangular patch antenna, with an inset feed in ansys hfss.
The directivity of a patch can be estimated quite easily. Optimization of sparameters of microstrip patch antenna. How can i increase s11 of my antenna, i have it at 9 db and at 7db. In hfss for antenna desigining, if frequency in solution setup 2. To obtain the field patterns, intrinsic impedance and wavelength for the first 4 modes. The simulated peak gain for the hu multislot antenna is shown in fig. Hfss design of rectangular patch antenna using microstrip line feedingedge feeding duration. If the antenna had a 100% radiation efficiency, all directivity would be converted to gain.
Note that in general sparameters are a function of frequency i. How to find exact feeding position in a microstrip patch. In this paper, a patch antenna with a pc substrate is designed and analyzed using the software package high frequency structure simulator hfss. S11 then would be the reflected power radio 1 is trying to deliver to antenna 1.
Unlike rectangular patch, the circular patch has only one degree of freedom to control it characteristics is the radius of antenna 2. Design and analysis of microsrtip square patch antenna under the kind guidance of. The patchmicrostrip object is a microstrip patch antenna. Although to find the peak gain at resonant frequency or any other frequency, following steps should. Figure 45 s11 of patch antenna in trial and error method. Design of a high gain circular patch antenna for gsm1800 band.
Matching of microstrip lines matching of microstrip transmission lines is done by matching each line to the source, its interconnecting transmission lines, and to the edge of a patch antenna. Ansys hfss is the industry leading 3d electromagnetic em simulation tool for high frequency and high speed electronic components including antenna design and placement. Microstrip patch antenna using hfss linkedin slideshare. Design and fabrication of microstrip patch antenna at 2. The center frequency will be approximately given by. I was comparing the results of a microstrip resonant patch antenna designed in hfss with ads and empro fem only. Hfss complete simulation setup for antennas youtube.
Monopole antenna for wifi applications world journal of. The above equation says that the microstrip antenna should have a length equal to one half of a wavelength within the dielectric substrate medium. One of the most important part of antenna design is to measure its input. Design of a rectangular microstrip patch antenna for gnssgps. A rectangular patch design equations are introduced and validated by well simulated results. High frequency structure simulator hfss software is used to compute the gain, axial ratio, radiation pattern, and return loss s11 of proposed antenna.
This video covers the implementation of a 10 ghz rectangular patch antenna, with an inset feed in ansys hfss. The frequency of operation of the patch antenna of figure 1 is determined by the length l. The dimensions of antenna can be found in the hfss simulation file. Click the ok button create substrate to create the substrate. Multiband microstrip patch antenna for wireless communication. In this work hfss tool is used for designing and simulating patch antenna for getting better bandwidth, vsrr and s 11 by selecting appropriate dimensions of superstrate. A patch antenna radiates power in certain directions and we say that the antenna has directivity usually expressed in dbi. Fig 1 structure of the rectangular microstrip patch antenna in this paper a rectangular microstrip antenna is designed at l 2 frequency, suitable for use in space monitoring applications. Sep 01, 2016 this slide describes design and simulation about the micro strip patch antenna using hfss software. Patch antenna hfss design with coax ground highlighted. The geometry and details simulation of antenna has been presented in this work. The effect of changing substrate material and thickness on.
In this case, each vector starts at the origin and lies along the specified points on the x, y, and zaxes. Threeelement vectors of cartesian coordinates in meters. So, if the designer has a clear conception about the effect of changing substrate material and its thickness on the performance of the antenna, it will be easier to design an antenna. This workshop is intended to show how to simulate and analyze a microstrip patch antenna using ansys hfss. S21 or s12 represents power coupled from one port to another, a useful parameter for determining coupled power from one antenna to another. Based on the designed patch antenna, many phased arrays will be simulated using hfss.
I have designed a microstrip patch antenna in hfss at 28 ghz, its bandwidth is. Note that a quarterwave length transformer was used to match the patch to a 50 ohm feed line. The simulated s11 curves for the antenna without slots, with uslot in feed only, with hslot in the patch only and with multislots hu. The results show that the antenna with a pc substrate has a lower return loss, a higher gain and a lower side lobe level, compared with the conventional antenna. Rectangular waveguide hfss r objective getting started with hfss a tutorial using hfss, simulate an airfilled wr90 waveguide shown above. Ill use the terms microstrip antenna and patch antenna interchangeably. The rectangular patch antenna is analyzed, and what is learned here will be applied to understanding pifas planar invertedf antennas. How to solve the problem of bad matching s1110 db in hfss. It consists of rectangular substrate and the metal trace layer as shown in fig. The microstrip patch antenna model used for the numerical simulation in ansoft hfss is shown in fig. As the microstrip patch antenna consist of a ground a patch and a substrate. I am currently working on rectangular patch antenna when fed with proximity coupling. Typical half wave patches have efficiencies well above 90%. Patch antenna design using hfss ozen engineering and ansys.
How can i increase s11 of my antenna, i have it at 9 db and at 7db min and. Comparison of circular sector and rectangular patch antenna. Hfss and the technicians at aut, school of engineering for assistance with my research. Building and analyzing s parameter antenna in hfss. The plot shows the gain value at a resonant frequency. When designed antenna is simulated in hfss then following results were observed. Contribution of parameters influencing the bandwidth of the patch. And s12 is the power from radio 2 that is delivered through antenna 1 to radio 1. Simulated results in hfss when we completed the design part of the proposed antenna we got the simulated results of the antenna which includes return loss s11 parameter, vswr, 2d radiation pattern as well as 3d radiation pattern.
The purpose of this paper is to develop a new structure. By seaing the overall response of antenna for s11 parameter and vswr. Building and analyzing s parameter antenna in hfss youtube. In the search by name field, type rogers rt duroid 5880 tm. To determine the width w, the microstrip patch antenna calculator was used to provide an initial. Sep 09, 2016 hfss tutorial modelling a patch antenna duration. The parameters evaluated were gain, beamwidth and return loss. Indeed, several articles define the band of use of the antenna for absolute value of s11 s11 s11 patch antenna. Sep 07, 2018 i generally use ads momentum for circuit design, not used it for antenna, i usually use hfss for antenna. The patch antenna is a good place to start for antenna fundamentals.
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