To improve bandwidth and gain of microstrip antenna several techniques can be used. Pdf rectangular patch antenna array design at ghz. P, india abstract here we made an attempt to maximize the gain of microstrip patch antenna. The fundamental structural difference between the microstrip patch and aperture coupled microstrip patch antenna is the feed method used to excite the patch. By tuning the curvatures of the vortex slots, the polarizations can be made equal in amplitude and a good cp circular polarization property is obtained 9. We use a simple rectangular, half wave long, probefed patch operating in.
Various antenna parameters are plotted and discussed in following topics. Reconfigurable patch antennas with fourpolarization. I find total realized gain to be most useful and often compare it to the polarization that i think i have and want in a particular antenna. When the equivalent capacitance values of the varactors are increased. Simulate and analyze a rectangular patch antenna using ansys hfss, including return loss and 3d radiation fields. How to design circular polarized patch antenna in 1. A nonlinear regression analysis, based on hfss simulations, is carried out in order. This paper describes the design of a dualwideband dual linear polarization shared aperture patch antenna. The methods of feeding the rf power directly to the patch antenna is to make it radiate by using. The measured parameters satisfy required limits hence making the proposed antenna suitable. They cite in in the onlinehelp sections on polarization. Techniques for analyzing antenna lattice structures. Hfss example,patch antenna with circular polarization. Microstrip patch antenna array design to improve better.
Linear polarization horizontal or vertical pole is discussed. Smartphone antenna design or cellular antenna design, mobile phone antenna design, etc is reasonably complicated. Solvable in ansoft designer planarem mom simulation. Directional patch antenna array design for desktop wireless internet abstract to improve desktop wireless internet access, two patch antenna configurations were investigated in order to find an alternative for a dipole antenna, which is commonly used for wifi access. Rectangular patch antenna for high gain and vertical. This research expands the knowledge of the sccma by investigating the use of a cylindrical rectangular microstrip antenna crma mounted on an electrically small radius i. The 2x2 patch array antenna is simulated using ansoft hfss. Techniques for analyzing antenna lattice structures richard remski, matt commens, and john silvestro. Rectangular microstrip antenna parameter study with hfss.
A microstrip patch antenna is a radiating patch on one side of a dielectric substrate, which. Polarization linear polarization return loss 20 db at. To determine the width w, the microstrip patch antenna calculator was used to provide an initial. Itsi transactions on electrical and electronics engineering itsiteee.
Design of multifunctional microstrip patch antenna for. Introduction this article introduces the basic concepts of patch antennas. The second group focused on the design and simulation of patch antennas which are widely used in cell phones today with an emphasis on optimization of a 1. Keywords microstrip antenna rectangular patch antenna hfss 14. I often find myself discussing polarization issues with the ansys aes as it is not a trivial issue. The array, together with the feeding network is analyzed with hfss software.
Rectangular patch antenna for high gain and vertical polarization. Design of kuband hexagonal microstrip patch antenna with linear and circular polarizations kadiyam suresh1. Antenna characteristics directivity polarization bandwidth medium linear narrow. Rectangular microstrip patch antenna for global position. Journal of computing design of coaxial fed microstrip. The parameters evaluated were gain, beamwidth and return loss. Determining input impedance of patch antenna in hfss. In our approach, a polyphase filter is used to obtain the four 90 phase shift outputs to feed a square microstrip patch antenna. In this example we design a circular polarized antenna using hfss,optimization was used to refine the axial ration and s11, download the original file. Polarization reconfigurable patch with perturbations on the patch the structure of the reconfigurable fourpolarization antenna with the perturbations on the patch and its geometrical parameters are plotted in figure 7. The slot antenna can be considered as a loaded version of the inf antenna. The polarization or polarisation of electromagnetic em waves or fields is introduced.
Rectangular patch antenna array design at ghz frequency using. Hfss modeling are developed to calculate the antenna dimensions, for some given resonant frequency, aspect ratio, dielectric constant and height of substrate. The final geometrical dimensions are designed by hfss software. Microstrip patch antennas for broadband indoor wireless systems project 11 salman haider. Both ring and ushaped slot antenna 6,7 and eshaped patch antenna 8 have less directivity. Rhcp and lhcp left and right hand circular polarizations are described.
Analysis and design of circular microstrip patch antenna at 5. Introduction with the everincreasing need for mobile communication and the emergence of many systems, it is important to design broadband antennas to cover a wide frequency range. While the microstrip patch antenna uses direct feed in order to excite the patch, the aperture coupled. The fundamentals of patch antenna design and performance. Zerothorder resonance patch antenna 5 has negative gain which is not desirable. Alternate feed methods a common variation in patch antenna design is the location and routing of the feed, to obtain a desired feedpoint impedance, to. With just 2 solve nodes, hfss will solve 5 simultaneous domains per node, whi. A duallayer microstrip patch antenna with stub designed by simulated annealing algorithm for circular polarization li guo and zhiqiang yao abstractin this paper, a design method that employs simulated annealing sa algorithm to create stub structure of a duallayer microstrip patch antenna for circular polarization is presented. All simulations were performed using ansofts hfss v10. Hfss example,patch antenna with circular polarization with arabic. Rectangular patch antenna array design at ghz frequency using hfss. In this project, ansys hfss is used to develop and simulate a microstrip line feed linearly polarized rectangular microstrip patch antenna for a navigation system gps at 1.
Making antenna patch, substrat using ansoft hfss youtube. Hi, i am writing this post to elaborate on how can we determine the input impedance of patch antenna using deembed option in hfss. Singlefeed circular polarization microstrip antenna. Dualwideband, dualpolarized shared aperture antenna with. Design and development of reconfigurable microstrip patch. Also the antenna gives nearly 3 db higher gain than that of monopolar circular patch1. Microstrip patch antennas for broadband indoor wireless. Can u tell me the steps how to find the co and cross polarisation plots for the patch antenna using hfss and cst. Hfss with hpc for large finite antenna array design. Patch dimension y patch dimension x feed along x feed along y coax inner radius coax outer radius ref.
A simple design of circularlypolarized cp microstrip antennas with frequency agility is described. It will be helpful for those who do not know about it. Circular microstrip patch antenna using coaxial feed for s. Microstrip patch antenna meets all requirements and various types of microstrip antennas have been designed for use in mobile communication systems. Singlefeed circular polarization microstrip antenna sudhanshu n.
This leads into the discussion of antenna polarization. Design of circular polarized printed patch antenna for bandwidth. In this example we design a circular polarized antenna using hfss,optimization was used to refine the axial ration and s11, download the. The reconfigurable antenna is composed of a square radiating patch, four varactor diodes, and two lumped capacitors.
When it is moved to the slot center or open end of the inf antenna, the impedance. Conformal microstrip antennas, on the other hand, have a much more limited body of. Aperture coupled microstrip antenna design and analysis. Performance analysis of probefed circularlypolarized moderately. Aperture coupled microstrip patch antenna for wifi, wimax. Aperture coupled microstrip antenna design and analysis michael paul civerolo a linearlypolarized aperture coupled patch antenna design is characterized and optimized using hfss antenna simulation software 1. A 2x2 polarization switchable patch antenna array for polarization modulation by pengfei ji a thesis submitted in partial fulfillment of the requirements for the. When the feed point is moved to the shortcircuited end of the slot or inf antenna, the impedance decreases.
A 2x2 polarization switchable patch antenna array for. How can i know the type of polarisarion of an antenna in hfss. A reconfigurable microstrip patch antenna with polyphase filter for polarization diversity and cross polarization filtering operation is presented in this paper. Hi, how to know the type of polarization of an antenna in hfss. Introduction circular polarizationcp are largely involved in. A dual band antenna and a microstrip fed patch antenna, used in. The microstrip patch antenna model used for the numerical simulation in ansoft hfss is shown in fig. Antenna is simulated in high frequency structure simulator hfss version. Frequencyreconfigurable microstrip patch antennas with. With a coaxial probe, two orthogonal resonant modes of the square patch antenna are simultaneously excited. Directional patch antenna array design for desktop.
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