Find the input impedance of patch antenna in hfss i have gone through many threads in the forum about finding the input impedance of patch antenna, however all the replies cant catch my mind. It is one of the several commercial tools used for antenna design. A graphenebased microstrip patch antenna with dimensions of micrometers has been predicted to resonate in the thz band. A nematic liquid crystal nlc cell is used as a substrate to a microstrip patch antenna in order to control its resonant frequency through the use of a dc or lowfrequency ac bias voltage. The tunable 10 db bandwidth of the 3 ghz antenna is 150 mhz.
Mems based tunable microstrip patch antenna fabricated using printed circuit processing techniques ronald edward jackson, jr. Design and characterization of a tunable patch antenna loaded. Mahmoud, \a widely tunable compact patch antenna, ieee antennas. A memsbased electrostatically tunable circular microstrip.
Tunable reduced size planar folded slot antenna utilizing. The parameters evaluated were gain, beamwidth and return loss. Vittoria as new type of electronically tunable magnetic patch antennas with metal magnetic. The radiation pattern is not affected from the bias voltage. Graphenebased patch antenna tunable in the three atmospheric. Aces revised copy dual frequency microstrip patch antenna. At the center frequency, 3 ghz, the antenna has a measured return loss of 44 db and a gain of 1. Schematic view of the frequency tunable microstrip patch antenna. This video covers the implementation of a 10 ghz rectangular patch antenna, with an inset feed in ansys hfss. Generally, the patch width is limited because of the undesirable in. A triangular patch antenna for uhf band with microstrip. Oct 24, 2018 the cross antenna is designed to operate at a frequency of f 2. Design of a frequency tunable patch antenna using hfss ijartet. The approach is based on tuning the operating frequency of a bandpass filter that is incorporated into a wideband antenna.
The 2x2 patch array antenna is simulated using ansoft hfss. Now when that happens, the usual microstrip patch antenna analysis comes in. Now, on the other hand without proper design, when you place any scatteringradiating structure too close to the ground plane e. Tunable and dual band rectangular microstrip antenna for. The microstrip patch antenna model used for the numerical simulation in ansoft hfss is shown in fig. In the search by name field, type rogers rt duroid 5880 tm. Prototype fabrication is done using photolithography technology. The simulated results are compared with experimental data, and good agreement is. Design of a frequency tunable patch antenna using hfss. Sep 01, 2016 this slide describes design and simulation about the micro strip patch antenna using hfss software. Design and characterization of a tunable patch antenna loaded with. Nandhini 2 1assistant professor, department of electronis and communi cation engineering, m.
Ansoft hfss is used for both microstrip line and antenna analysis. Feb 11, 2015 this video covers the implementation of a 10 ghz rectangular patch antenna, with an inset feed in ansys hfss. Patch antenna design using hfss this workshop is intended to show how to simulate and analyze a microstrip patch antenna using ansys hfss. The design procedure presented in this paper incorporates the electrical and nonelectrical properties of graphene for initializing the tunable conductivity which is further coupled to electromagnetic simulator for analyzing the radiation. These measurement results are in good agreement with the simulation results obtained with ansoft hfss. Microstrip patch antenna design santa clara university. A tunable operation can be achieved by the adding electrically small slots along the patch edges. This increase in effective permittivity results in a downward shift in the resonant frequency. Probe feed patch antenna4 probe feed patch antenna als tab. Antennas research electromagnetics research group emrg. Pdf tunable srrbased substrate for a microstrip patch antenna.
The antenna radiation reflected lesser in antenna with fss layer by 7. Patch antenna is designed as a halfwave length microstrip resonator. The fundamentals of patch antenna design and performance. Note that a quarterwave length transformer was used to match the patch to a 50 ohm feed line. Apr 19, 2016 the resulting plots for z11 in hfss will show us the correct input impedance of patch antenna. The magnetic patch antennas showed an enhanced bandwidth of 50%.
Tunable microstrip patch antenna based on liquid crystals ieee. Determining input impedance of patch antenna in hfss. Design and characterization of a tunable patch antenna. Design of tunable frequency bandwidth enhanced circular patch. Click here to go to our page on circular patch antennas new for september 2018. This slide describes design and simulation about the micro strip patch antenna using hfss software. Microstrip patch antennas or simply patch antenna are increasingly useful because the antenna is printed directly onto a circuit board. For two frequencies tm10 and tm30 are the first two modes of simple rmsa are perturbed.
The dielectric tensor properties of the liquid crystal lc are dependent. Studio, and the crosscomparisons are provided via ansoft hfss. Design of tunable frequency bandwidth enhanced circular patch antenna by varying air gap. Design of probe feed microstrip patch antenna in s band. First the model of the microstrip patch antenna has to be drawn in hfss. Frequencytunable and pattern diversity antennas for. The patch antenna ebg structures and their radiation properties are characterized. Pdf tunable microstrip patch antenna based on liquid crystals.
Electronically tunable magnetic patch antennas with metal. Patch antenna design using hfss ozen engineering and ansys. Click the ok button create substrate to create the substrate. A millimeterwave inflatable frequencyagile elastomeric antenna. Beam scanning properties of a ferrite loaded microstrip patch. This paper shows the design considerations of the proposed antenna as well as the simulated results of the same. Frequency tunable microstrip patch antenna using rf. A triangular patch antenna for uhf band with microstrip feed line for rfid applications twinkle kundu1 and davinder parkash2 1m. Design of frequency and polarization tunable microstrip antenna. The dimensions of antenna can be found in the hfss simulation file. 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. Design and analysis of microsrtip square patch antenna under the kind guidance of. It consists of rectangular substrate and the metal trace layer as shown in fig.
The equilateral triangular patch antenna has been designed here using graphene as the patch conductor. Microstrip patch antenna using hfss linkedin slideshare. A novel frequency tunable antenna with a wide tuning range ningli zhu and wei zhang institute of microelectronics, peking university, beijing 100871, china abstract in this paper a varactorloaded antenna with a wide tuning range and good directivity is designed. The resulting plots for z11 in hfss will show us the correct input impedance of patch antenna. The basic theory and design are analyzed, and simulation done by using hfss to optimize the antennas properties.
Abstract a rectangular microstrip antenna rmsa with two slots placed close and parallel to nonradiating edges for tunable and dual band operation with single feed has been demonstrated. A novel frequencytunable antenna with a wide tuning range ningli zhu and wei zhang. Their low profile design, often square or rectangular, allows them to be mounted to flat surfaces. A tunable antenna our group has worked on is a pixelated dualband folded monopole 6. The antenna is designed and simulated using ansys high frequency structure simulator hfss software v17. Photograph of triangular patch antenna with u slot 3. Siw filter and tunable microstrip patch antenna in multilayer technology based on liquid crystals lcs are presented. The length of both the driven and tunable parasitic element is l. The entire antenna geometry including the feed network measures 16mm x 16mm x 4mm with a patch radiator measuring only 10mm x 5mm.
The optimized antenna is fabricated and tested to verify the simulated reflection and radiation properties. This workshop is intended to show how to simulate and analyze a microstrip patch antenna using ansys hfss. This is a video tutorial on how to design a rectangular patch antenna using ansoft hfss. Subsequently, the whole antenna structure at either switch on or off stage is analyzed using a fullwave simulation. The antenna has been implemented on silicon substrate with an air cavity between the patch and ground. 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 control the polarization, or for convenient layout. This is the first monolithic frequency tunable microstrip patch antenna where a cpw stub loaded with mems capacitors is used as a variable load operating at low dc voltages.
Beam scanning properties of a ferrite loaded microstrip. Professional simulator hfss is used to demonstrate the wide hpbw and externally tunable scanning capabilities of the designed antenna, ideal for sectorwise coverage of communication devices. The variable capacitance diode loading method is taking in detail, which. Design rectangular patch antenna using hfss part 1 youtube. Jul 30, 2014 tunable patch antenna printed on a biased nematic liquid crystal cell abstract. Performance of dual frequency antenna from hfss a 8 ghz antenna b 10 ghz antenna. In this paper, a rectangular microstrip patch antenna is designed using hfss software.
The micro strip patch antenna consists from a ground, a substrate, a patch and a feed line. As an example, the real and imaginary parts of zin z11 have been shown in the figure below. Some key advantages to the rf mems switch are nearzero power consumption, very. Of course, tradeoffs also occurs, so you must be careful. Deschamps in 1953, but didnt become practical until the 1970s when it was developed further by researchers such as robert e.
Structure of triangular patch antenna with u slot the proposed antenna was fabricated on fr4 substrate. Frequency tunable microstrip patch antenna using rf mems. The design and simulation of antenna is done by using ansoft hfss. Its resonant frequency can be tuned by the choice of chemical potential of graphene which can be simply. Professional software hfss is used to optimize the designed coaxially fed patch to resonate at 10 ghz.
The varactors also reduce the size of the antenna by 30% by capacitively loading the resonating slot line. 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. The design of a reconfigurable dual frequency microstrip patch antenna using rf mems switches has been established and the minimum number of switches required has been determined. The integration of an open loop resonator olr based adjustable bandpass filter into a wideband antenna to transform it into a tunable filterantenna is presented. Additional benefits of patch antennas is that they are easily fabricated making them cost effective. Rf switches, varactors, mechanical actuators or tunable materials. Reconfigurable dual frequency microstrip patch antenna using rf mems switches.
Pdf in the paper, a microstrip patch antenna over an artificial substrate. Tunable patch antenna printed on a biased nematic liquid. P, india abstract here we made an attempt to maximize the gain of microstrip patch antenna. The ferrite rods are then loaded onto the mpa to introduce beam scanning. The designed antenna has a resonating frequency of 2. Ansys hfss is the industry leading 3d electromagnetic em simulation tool for high frequency and high speed electronic components including antenna design and placement.
I have gone through many threads in the forum about finding the input impedance of patch antenna, however all the replies cant catch my mind. Kumarasamy college of engineeringautonomous,karur, tamil nadu, india. Solved find the input impedance of patch antenna in hfss. Sep 18, 2017 this is a video tutorial on how to design a rectangular patch antenna using ansoft hfss. Tunable patch antenna printed on a biased nematic liquid crystal cell abstract.
The dimensions of the cpw ground are made larger in order to obtain proper transition of signal between the cpw ground and ground plane of patch antenna. Focus on tunable antennas add impedance elements to electrically change the characteristics of the antenna z in. The cross antenna is designed to operate at a frequency of f 2. Circularly polarized beamscanning microstrip antenna. A novel tunable microstrip patch antenna using liquid crystal. The microstrip patch antenna is supported by a pdms. The resonant frequency of an antenna plays a key role in the design of a reconfigurable and tunable antenna. Circularly polarized beamscanning microstrip antenna using a. Hfss stands for high frequency structural simulator. Tunable handset antenna for lte global roaming band 2. The patch is generally made up of a conducting material such as copper or gold and can take any possible shape like rectangular, circular, triangular, elliptical or some other common shape. Tunable srrbased substrate for a microstrip patch antenna.
The mpa is designed on a duroid substrate with, mm. The patch is inductively coupled to a coplanar waveguide cpw feed line via a slot in the ground plane. Pdf tunable microstrip patch antenna based on liquid. A 6 mm diameter circular patch antenna tunable from 16. Circularly polarized beamscanning microstrip antenna using a recon. A novel frequencytunable antenna with a wide tuning range. Software used to design microstrip patch antenna hfss is commercial finite element method solver for electromagnetic structures from ansys corp. Focus on tunable antennas add impedance elements to electrically change the characteristics of the antenna z in, e field 60 ghz onchip tunable antennas and array adaptive field patterns tuned by impatt diodes mantenna wearable antenna array operating at 50500 mhz direction finding for military applications. Abstract a micro strip patch antenna for wlan is designed.
To determine the width w, the microstrip patch antenna calculator was used to provide an initial. Probe feed patch antenna 4 probe feed patch antenna als tab. Frequencytunable microstrip antennas, for cognitive radio applications, are proposed herein. The optimized dimensions of the mpa are mm, mm, mm, mm, and mm. The following workshop provide a comprehensive understanding of. A reconfigurable microstrip cross parasitic antenna with. Each tunable parasitic element consists of a hexagonal slot loaded with two varactor diodes. Mar 07, 2016 hfss microstrip patch antenna analysis and design 1. Ec 4th year shivanshu awasthi ec 4th year sarvesh kumar nishad ec 4th year novman asif ec 4th year.
A triangular patch antenna for uhf band with microstrip feed. A photograph of the fabricated prototype is shown in figure 2 figure 2. Two antenna configurations that resonate at 8 ghz and 10 ghz have been designed and with a reconfigurable double stub tuner each has been implemented. The patch antenna is a good place to start for antenna fundamentals with more coming. Analysis and design of circular microstrip patch antenna at 5. B single patch antenna, c 2x2 5 ghz array connected with hard shorts, d 2x2 5 ghz array connect with rf shorts 3pf capacitors, and e ansys hfss simulated reflection coefficients for all four structures.
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