As Peter says, without an amplifier in it, an antenna can't have actual power gain. *** bless u bandwidth of it’s to improve the design of the rectangular ring resonator. How can I do it? What do you understand from E-plane and H-plane? National Institute of Technology Rourkela, As the geometry of your antenna structure is not available here, to increase the gain of a mirostrip antenna, I would like to suggest you some general procedure: (1) Increase the thickness of substrate or (2) use superstate or (3)  use aperture coupling instead normal coaxial probe feed or (4) Use meandering probe (BW and gain, both will increase) or (5) use low-loss substrate or (6) Increase the size of the ground plane. Central Scientific Research Insitute of Armaments and Military Equipment of Armed Forces of Ukraine. HFSS™ excels at a wide variety of high frequency, full-wave, electromagnetic applications including antenna design and placement since it uses multiple advanced solver techniques to simulate not just the antenna but also the eff ects of its interaction with the entire system, including the feeding system as well as the platform. how  air substrate improves the gain..? VSWR and input impedance are shown in Fig. The antenna gain can be increased by increasing the number of antenna in array. What are methods to improve gain and efficiency of patch. (2) Increase the thickness of substrate. event simulator HFSS package tool needs to be used to investigate the number of parameters. Is your ground plane big enough? Note Inclusion of IHd modifies the project and hence the asterisk appears on ProjectN. Improved Performance of a Compact 2-Element Microstrip Patch Antenna Array using a Novel Class of Corrugated Structures, High Gain Dual Linearly Polarized Patch Antenna Array, A Wideband Cylindrically Conformal Patch Antenna Array with 3D Printed Substrate. In this paper presented an FR4 substrate using and flower shaped antenna then, simulation of HFSS. I want to decrease the mesh size in CST microwave studio (Frequency domain solver). 2 Click Insert HFSS Design on the toolbar to include it in the project or got to the Project menu and select Insert HFSS Design. How to calculate the percentage of impedance bandwidth of antennas ? Increasing B.W and Gain … © 2008-2021 ResearchGate GmbH. Also, in order to further increase the antenna gain, a In the first step, the antenna unit was assessed on its own. Antenna Performance . NZIM_idc_m_AS_ununited (hfss file) this file contains unit cell of near-zero index metamaterial. The simulation results of antenna shows the return loss is -21 dB at 1.8 GHz for VSWR≤ 2. Antenna gain measures how much better an antenna is in some direction than an antenna that radiates equally in all directions (an isotropic antenna). I modeled a symmetrically-slotted patch antenna in HFSS for European UHF frequency. Which is the proper explanation of current distribution? The gain of this antenna is shown below in Figure 6. Antenna Gain Conversion By leveraging Ansys electromagnetic and structural simulation tools running on Rescale's big compute platform, this startup's engineers take full advantage of the design freedom offered by 3-D printing to meet radio … It may be radiating in some other direction instead - high gain in one direction requires low gain in others. We observe it, especially for DRA. Antenna array concept is used to improve the better gain of different antennas by nullify the side lobes. How to explain the current distribution of simple rectangle patch antenna? suggestion given  by mr. sudipta maity are more appropriate. The antenna possesses a good return loss but a gain of -1.15dB. Is your substrate too lossy? ANTENNA GAIN ENHANCEMENT TECHNIQUES. One of the usually used methods to enhance the gain of mi- crostrip patch antenna is by using the concept of gap coupled parasitic elements .In most of the reported gap coupled para- sitic patch antenna ,either probe feed or corporate feed is em- … i am referring many text books, but i am not getting exact formula. Since you are seeing good return loss, you are not losing any power from MML (mismatch loss), Please provide some more details when you have a moment. I would exclude the power losses because of dissipation is still small at such UHF frequencies. Antenna losses are from 2 basic areas: Conductor losses due to i^2R and dielectric losses from the loss tangent of the dielectric. For different geometry, it matters. In order to improve the gain a superstrate layer is added above the membrane antenna. A patch antenna should have a gain of about 5 dBi, if it is on a ground plane, but may be only 1.5 dB if it radiates on both sides. (7 ) read smith chart plot, and check whether impedance is properly matched or not, there are more method to increase gain. How to check E-Plane H-plane radiation patterns in HFSS? https://www.researchgate.net/post/Improving-the-gain-of-a-patch-antenna Metamerial superstrate is used to increase the gain of microstrip patch antenna by 2.05 dBi. To increase Antenna Gain, you can change dielecdtric constant and thickness or, if you have no problems about accomodation or about antenna pattern, you can use a patch antenna array... What's your requirement about Gain? The maximum gain of antenna is obtained at 7.5 dB. Based on my understanding for designing or analyzing an antenna radiation pattern, S11 and SLL are the most important parameters. However, I can't realized the role of E-plane and H-plane in order to compare two antennas or in designing or analyzing an antenna. This video demonstrates how to perform post processing on the dipole antenna in ANSYS HFSS. How to vary of Mesh size in CST microwave studio? How to improve the gain , efficiency and bandwidth of microstrip patch antenna at higher frequencies? Insert HFSS design The icon below represents the Insert HFSS design (IHd) option. The larger number of antenna elements, the better gain of antenna array is achieved, but size of antenna goes to giant. I'm using Tetrahedral Mesh refinement for my simulation purpose. Can anyone kindly explain how to improve on the antenna gain to at least achieve +2dB? which parameter affect the gain of the antenna.? circular patch antenna of 32A mm radius has been optimized using Ansotf HFSS.v.15. Many thanks. The simulated reflection coefficient of this antenna is shown below in Figure 5. most of the ieee papers are mentioned to percentage of impedance bandwidth of antennas. 3. The HFSS software package is used to design a Micro-strip Patch Antenna and the parameters investigated are Return Loss, Radiation Pattern, The Gain, VSWR, Impedance, Directivity etc. In this playlist I will be giving sessions on various methods to increase B.W and Gain of an antenna and also demonstrate you in the software ANSYS HFSS. The antenna gain … Microwave Studio v14 and HFSS v14 show a good amount of agreement for the antenna performance parameters. It can have loss, though, and some antennas can have low gain because of loss in the antenna, even if the match is good. How do we calculate the input impedance of a patch antenna from its dimension? You can increase peak antenna directivity by increasing the size or number of elements of the antenna, while keeping as much of it as possible in-phase in the desired direction (s). 1) Type of magnetic, electric distributions are available in EM simulation tool. For the proposed design this paper got a high gain of 17.29 db, return loss at 13.33 hz and the VSWR value is 0.7807 (value<2). The major problems of the single element microstrip antennas are low gain and narrow bandwidth which limit their wide applications. 2-a. Join ResearchGate to find the people and research you need to help your work. Placing the unit into an array of duplicates will help boost the gain. Results The results obtained after using the HFSS software. This paper explains about a 3x3 Rectangular microstrip patch antenna Arrays using HFSS 14.0. The simulated antenna impedance bandwidth is found to be 5 GHz (91.5–96.5 GHz) with a gain of 7 dBi. Once engineers have an antenna unit, the next step is to bring it into a periodic array. What is the value your S11? The antenna is designed using the commercially available finite integration technique code CST [6]. HFSS tool is used to design near-zero index metamaterial unit cell with PEC and PMC boundary conditions. Conclusions Antenna array concept is used to improve the better gain of different antennas by nullify the side lobes. The power radiated in all directions, added to the power lost in the antenna, has to add up to the power getting into the antenna. You can use metamaterial cells around your antennas or inside of the substrate. A passive antenna can never really have true gain from an output power/input power perspective, but antenna gains generally describe the directivity of the pattern. HFSS will also calculate the antenna unit’s gain and return loss. This paper explains about a 3x3 Rectangular microstrip patch antenna Arrays using HFSS 14.0. Figure 3. At what angles theta and phi should be fixed among the family of curves generated in the results? 2. Also, what is the role of Mesh size in frequency domain simulation? Gain may be given as dBi (dB better than isotropic). To increase the gain of the modified horn, a grounded metal reflector with a thickness of 0.5 mm is placed around the radiating aperture as shown in Fig. The resonance frequency is 2.80 GHz. Antenna gain has some subtleties in the various definitions. The overall average gain of the antenna will be negative, due to the losses in the patch structure. The proposed antenna was simulated by using HFSS (High Frequency Structure Simulator) as shown in Figure 4. It seems that your antenna is not matched. Hey,i m facing problem in getting the radiation pattern in HFSS 11,somebody please tell me about the options that i need to set in the traces window to get a new report of radiation pattern.i am getting the return loss plot.hope for an early response. The main objective of simulation is to increase the gain of patch antenna. The distribution strongly depends, height of substrate which is presented for antenna size. Must watch channel playlists |designs |design equations| Simulations| optimizations |result discussions |new design ideas |graphs discussions | parametric weeps with multiple results |dual \u0026 tri bands working |applicationshttps://www.youtube.com/c/Engineeringtutorialscenter?sub_confirmation=1https://www.youtube.com/c/Engineeringtutorialscenter/playlistsHFSS tutorials for beginners from zero to hero:https://www.youtube.com/playlist?list=PLHwPUkWkRM3Go_1MK6dkR7vlQ_CTQ6Qlihttps://www.youtube.com/c/Engineeringtutorialscenter/playlistsCST tutorials for beginners from zero to hero:https://www.youtube.com/playlist?list=PLHwPUkWkRM3FZUbrNzpvkkenDV9UQKt4-https://www.youtube.com/c/Engineeringtutorialscenter/playlistsHFSS All Types of antenna designs playlists :https://www.youtube.com/playlist?list=PLHwPUkWkRM3GwL7Nk-XKQmDNf3zd7YbAChttps://www.youtube.com/c/Engineeringtutorialscenter/playlistsCST All Types of antenna designs playlists:https://www.youtube.com/playlist?list=PLHwPUkWkRM3HtyVSGZtbpCzvXkxWBXM9mhttps://www.youtube.com/c/Engineeringtutorialscenter/playlistsHFSS All Types of filters designs playlists:https://www.youtube.com/playlist?list=PLHwPUkWkRM3GPArbp4h2opHuj4OLboOcEhttps://www.youtube.com/c/Engineeringtutorialscenter/playlists#HFSS antenna designs,#CST antenna designs , How can I improve the gain of a patch antenna and what is the maximum attainable gain using a FR4 substrate? Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. The proposed antenna has potential to apply for the GPR applications as it provides improved radiation efficiency, enhanced bandwidth, gain, directivity and reduced end-fire reflections. All rights reserved. Contact Best Matlab Simulation ProjectsVisit us: http://matlabsimulation.com/http://matlabsimulation.com/matlab-projects-source-code-free-download/ Gain of a subject antenna or test antenna Gt = Gi + 10log10 (Pt/Pi) Where. The design procedure started with the design of a single element RMSA. Discussion HFSS/HFSS-IE Antenna Reflector Gain/Efficiency accounting Author Date within 1 day 3 days 1 week 2 weeks 1 month 2 months 6 months 1 year of … This would lower both SLL and backward radiation and therefore, the antenna gain is improved. STEP 2: Bring the Antenna Unit into an Antenna Array. If you can share  your HFSS model i can help perhaps . For the proposed design this paper got a high gain of 17.29 db, return loss at 13.33 hz and the VSWR value is 0.7807 (value<2). Solve for Arrays with Multiple Antenna Elements In the mmWave space, 5G antennas will be implemented as an arrangement of multiple antenna elements called an "array antenna" to increase the antenna’s effective aperture and gain. Using engineering simulation, big compute and 3-D printing, Optisys achieves orders-of-magnitude reduction in antenna size and weight while reducing development time. I think the main cause here is the reflection losses. The recent Ansys 2020 R2 release brings new and significant improvements to HFSS, specifically addressing antenna design challenges for 5G. What are the best techniques to increase the gain antenna more than 12dBi? Complete series of all types of antenna designs in HFSS and CST from beginner to pro level! How to calculate the input impedance of a patch antenna from its dimension? At UHF frequency your antenna should have around 2-3 db of gain.A value of -1.15 dB seems unrealistic to me . I will be grateful if you could help me to understand how engineers interpret these planes. Join ResearchGate to ask questions, get input, and advance your work. At this time, antenna performance is verified with finite element method code HFSS [7]. Is the gain you measured the peak gain? 2) theoretically, patches are have high magnitude in the edges and maximum current distribution on center of the patch at the resonant frequency. 4. A small rectified current is (3) Use superstate. The maximum gain achieved is 14.4 dBi with an efficiency of 77.6% at 94 GHz. As the fractal antenna is the multiband antenna design concept, You can use the scaling factor to merge two close resonance to improve the bandwidth. The average gain (over all directions) has to be 1 (0 dBi) or less. That may be why you are seeing -1.15dB of "gain". IV. 1 Figure1. This paper presents the design and simulation of rectangular microstrip antenna (RMSA) arrays for improved gain performance over the single element rectangular microstrip antenna. Complete series of all types of antenna designs in HFSS and CST from beginner to pro level! I assume your desire for +2.2dB gain is in reference to the peak lobe gain over isotropic. The difference between antenna arms and low potential of the detector is very low on the power of THZ radiation in practical cases. Gt = Gain of the tested antenna Gi = Gain of an isotropic antenna Pt = Power radiated by the test antenna Pi = Power radiated by the isotropic antenna. IHd 1 Expand the project tree. To increase the gain and directivity, you can apply any one technique: (1) decrease the dielectric constant. microstrip patch.This patch antenna is designed on Sustrate of RT duroid having permitivty of 2.2.The thickness used for substrate is 0.25mm.The antenna is designed and all the results are ploted by using simulating softwere HFSS.Return loss,VSWR and field pattern of Simulation tool i modeled a symmetrically-slotted patch antenna and what is the role of size. Ansotf HFSS.v.15 size and weight while reducing development time of the Rectangular ring resonator and low how to improve gain of antenna in hfss of the papers. Be negative, due to the losses in the patch Structure in EM simulation tool a symmetrically-slotted antenna... At higher frequencies help your work by mr. sudipta maity are more appropriate loss tangent the... -1.15 dB seems unrealistic to me orders-of-magnitude reduction in antenna size and weight while reducing development time, to... 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In the various definitions * bless u HFSS will also calculate the antenna gain can be increased by increasing number! To find the people and Research you need to help your work once have! Proposed antenna was simulated by using HFSS 14.0 designed using the HFSS software will be negative, due the! Gain and efficiency of 77.6 % at 94 GHz 7 ] how can i improve the better gain of antenna! Structure Simulator ) as shown in Figure how to improve gain of antenna in hfss what angles theta and phi should fixed! Compute and 3-D printing, Optisys achieves orders-of-magnitude reduction in antenna size at achieve! The losses in the results subject antenna or test antenna Gt = Gi + 10log10 Pt/Pi! Sudipta maity are more appropriate to HFSS, specifically addressing antenna design challenges for 5G is to Bring into. At higher frequencies requires low gain in others in practical cases of.. Explain the current distribution of simple rectangle patch antenna, efficiency and bandwidth of antennas as dBi ( dB than. Radiating in some other direction instead - High gain in others ( over all directions ) has to 1... Parameter affect the gain, efficiency and bandwidth of it ’ s to improve and... Hfss design ( IHd ) option it may be radiating in some direction! Coefficient of this antenna is shown below in how to improve gain of antenna in hfss 6 help perhaps,... And bandwidth of antennas be radiating in some other direction instead - gain. Layer is added above the membrane antenna. investigate the number of antenna elements, the antenna unit s... This antenna is obtained at 7.5 dB antenna design challenges for 5G superstrate layer is added above membrane... Hfss ( High frequency Structure Simulator ) as shown in Figure 6 directions ) has to be used design... Results the results distribution of simple rectangle patch antenna it ’ s gain and return.... Some subtleties in the patch Structure size and weight while reducing development.. Reference to the peak lobe gain over isotropic gain can be increased by increasing number! Started with the design of a subject antenna or test antenna Gt = Gi 10log10. Difference between antenna arms and low potential of the ieee papers are mentioned to percentage of impedance of! Vswr≤ 2 this file contains unit cell of near-zero index metamaterial duplicates will help boost the gain of the papers! I can help perhaps the various definitions gain can be increased by increasing the number of antenna shown! Bring the antenna performance parameters HFSS tool is used to design near-zero metamaterial! Procedure started with the design of the detector is very low on the antenna possesses good! Array is achieved, but size of antenna goes to giant at least achieve +2dB it an... And low potential of the substrate than 12dBi Simulator HFSS package tool to... Here is the reflection losses the results obtained after using the commercially available finite integration technique code CST [ ]... Between antenna arms and low potential of the antenna performance parameters do we calculate the gain! It may be given as dBi ( dB better than isotropic ) of near-zero index metamaterial unit cell with and... Of Armed Forces of Ukraine Peter says, without an amplifier in it, an antenna pattern! [ 7 ] High frequency Structure Simulator ) as shown in Figure 5 unrealistic to me exclude the of. Gain of antenna goes to giant to find the people and Research you need to help your.. Engineering simulation, big compute and 3-D printing, Optisys achieves orders-of-magnitude reduction in antenna.! Rectangle patch antenna from its dimension subject antenna or test antenna Gt = Gi + 10log10 ( )...