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77 Threads found on Aperture Coupled
you could use the aperture coupled feed method and the multilayer method, and the bandwidth could reach 20%.
Hi everyone, I need to help with my project in CST MWS. I have to do Design of an Electronically Beam Scanning Reflectarray Using aperture-coupled Elements as in link: but in 24 GHz. I dont know, how to do a model of varactor diode MGV-100-20 in CST.
Hello everybodo I designed an aperture coupled microstrip patch antenna ! I made 50 ohm microstrip line feeder, after optimizating the patch diemension and the aperture size, my structure resonate at the desirable frequency. My question is how to make sure that my antenna have 50 ohm impedance using HFSS!and if ti 's not, how to (...)
Hello everybody, I'm trying to simulate an aperture coupled patch antenna(rectangular)at the millimeter band with HFSS, i made my 50 ohm feed_line into 30um substrate, and my ground with the aperture above it. First of all, i triyed to simulate with a wave port (sized as hport=6 times substrate height and Wport=5 times feedline width), (...)
Hi.. I am designing an aperture coupled metamaterial patch antenna. So through which method i should implement metamaterial i.e. srr or csrr and where to implement it on substrate or patch or ground using cst.
What frequency? What array spacing? (lambda/2?) What sort of feed arrangement did you have in mind for the patches? (probe/aperture coupled/edge fed?) Any phase shifts between the driven elements for beam steering? While all of the above are essential to know from an implementation viewpoint, fundamentally the design of a 1x2 phased array is p
Dear friends, I am trying to design a u-slot aperture coupled patch antenna in millimeter-wave band (about 30 GHz) using CST and according to the picture attached. I have a few problems in the procedure: 1- I can not find "foam" in CST material library so I think I should make a new material myself. But the problem is that only the εr of
hello I want to simulate the aperture coupled micro-strip antenna, and i have the parameters of this antenna, just i want to know how to design waveguide port, i tried to use 3*wf X mt+5*hp:wf is width of feed line,and hp: high of substrate of patch, but for microstrip antenna,you know in this antenna, the feed line and patch are on the same s
I have designed a 1x5 element aperture coupled array antenna at 60 GHz. I want to have side lobes levels at -15dB from main beam.. How can I achieve this..Theoretically the separation between elements should do the job but I have tried separation between elements from 0.5--0.9 Lambda and still no suppression of side lobes.. Any ideas people.. A
Hi all, I am confused on how to feed a monopole antenna with a stripline feed in HFSS. Should the stripline be within the substrate and be connected to the antenna with a coax cable or aperture coupled. Only the feed part has the partial ground. Thanks a lot for advice.
hi friends does any one have the electric field expression for aperture coupled microstrip antenna. how to obtain its radiation pattern? help me in this regard
Hi all members, I have been asked by my Professor to design the following antenna and try to optimize it by increasing its BW to 4 GHz..I am getting a BW of only 2GHz. 87464 87465 I have experimented by varying the stub length and slot length as per reading some papers but still got nothing..
Hi Divya.S Bandwidth can be increased creating more than one resonance. aperture-coupled patch is a suitable feeding method that allows this. How are you feeding the patch? Other methods are stacked patches and coplanar parasitic elements, among others. Look for chapter 9 of "Microstrip Antenna Design Handbook" by Garg, Bhartia, Bahl, and It
i have optimise a frequency recofigurable aperture coupled patch antenna with antenna substrate as FR4(K-4.4) having thickness of 0.7mm but i m getting very less bandwidth so how can i increase the resonance bandwidth with these specifications?
Recently I am reading on microwave waveguides, especially the case a feed waveguide coupling to another waveguide with short end (a cavity) via an aperture. (Collin, "Foundations for Microwave Engineering", Chapter 7.6). I have a question and I will really appreciate if anyone answers it and helps me understand more. The aperture looks like a sh
hello i want to know that how to fabricate the aperture coupled antenna. as i know in aperture coupling, the ground plane is separated by two substrate or we can say ground plane is use to be situated between two substrate. so for fabrication process if we use single side FR4 sheet if we want to fabricate using Fr4, one side of the sheet (...)
What is the criteria to decide on the position and size of waveport in aperture coupled Microstrip patch antenna and linefed microstrip patch antenna???
Hi, I am trying to simulate a aperture coupled patch antenna, i have many problems in design of waveguide port with CST and when the simulation begins, it always been aborted automatelly with the error: The current settings will probably lead to a very long simulation time. You may improve the simulation speed by: 1. check the freq. range a
Hi, I am trying to simulate a aperture coupled patch antenna, i have many problems in design of waveguide port with CST and when the simulation begins, it always been aborted automatelly with the error: The current settings will probably lead to a very long simulation time. You may improve the simulation speed by: 1. check the freq. range a
Hi, I am trying to simulate one of Jose. Encinar's paper titled " Reflectarray element based on aperture-coupled patches with slots and lines of variable length ". The design consists of four layers. I am not able to get my simulated results matched with the paper results using CST. Can anyone help me how to design multilayer structure with proper
hello sir, i m designing an aperture coupled microstrip antenna. i have designed it to operate on 2.2 GHz. however, now i want to make it operate on 2.45 Ghz. what are the changes to be made?
Hi, Based on my understanding after reading these two IEEE papers, i have came up with what i think a differentially driven aperture coupled microstrip structure would look like. Can someone pls help to review my design and tell me what is wrong with it? I am not unable to achieve the return loss response at the correct resonant frequency that i
how i can design the microstrip feed line using CST microwave for aperture coupled patch antenna
Hi, I am working on developing a stretchable antenna. Currently i tried simluating a 2.5 GHz inset fed patch antenna on the elastomeric substrate but i see that the reflections increase when it is stretched more than 10%. This maybe because we disturb the inset position while stretching. I thought like a aperture -coupled (Slot feed) would be bett
Hi all i want to design a circular polarized aperture coupled micro strip patch antena ? i am confuse how to use feed lines to to excite circular polarization mode through cross slots ?means how many feed lines we have to use one or two ?if somebody have any totorial for circular polarized ACMP antenna in HFSS kindly provide it.........
Dear friend there are many ways of achieving your bandwidth but first to answer your feed question.i am assuming that you are talking about simulation here and not physical model of the aperture coupled microstrip. so i am sure you have a little knowledge about drawing the waveport at the edge of the structure for a the same thing b
Hi, i need to design a aperture-coupled microstrip antenna. How do i create a gnd layer with slot in between two substrates (i.e. Patch substrate and Feed Substrate) using Sonnet. An example would be good. Thanks. hengchuan
Thread has been moved Hi all, I need to design a differentially-driven microstrip antenna using aperture-coupled technique using Sonnet software and I don't know how to start. Can someone offer me some advice or direct me to some tutorials/websites? Thanks. regards hengchuan
Hi everyone.....! I need help on the lumped-element equivalent circuit model of an aperture-coupled cylindrical dielectric resonator antenna...... ta!
Hello Everyone, I have encountered with a problem while designing an aperture coupled microstrip antenna element. Although the antenna is in resonance in the band where it has been operating, there is a problem with the radiation pattern. In the boresight, for the E-plane radiation pattern, there is a reduction about 1.5-2 dB in the directivity.
Hi folks I am working in aperture coupled Micro strip Antenna design in ADS. I am using ADS Momentum for stimulation purpose. There will be three layers in the design PATCH SUBSTRATE GROUND(aperture) FEED LINE SUBSTRATE I don't know how to use the create modify/substrate for implementing the same in ADS. I have previously used (...)
No, using printing technology many methods are there like aperture coupled antenna etc.
Hi Everyone i am looking for these papers if anyone has acess to them .please do share.i would really appreciate your help.thanks in advance .below are the papers. A. C. Buck and D. M. Pozar, “aperture-coupled microstrip antenna with a perpendicular feed,” Efectroa Lett., pp. 125-126, Jan. 1986. P. R Haddad and D. M. Pozar, R
Hello all, For my final undergraduate program I will be designing a reflectarray antenna. I have studied how they work, but I am confused about which software to use. My reflectarray antenna will be excited by a horn antenna. The elements will either be aperture coupled stub lines or just stub lines. Can any of you please sugges
hi. how can we calculate gap size and inner conductor for a resonant frequency in a coax cavity resonator like this in attachment file?and if we want to coupled 2 of this filter with aperture how could we measure coupling coeficient for aperture? plzz help me is very important. thx
Hello Friends I have simulated an aperture coupled microstrip patch antenna orginal from an IEEE paper & then I have made certain geometrical changes in coupling slot & i have got some different results. Can any one give his/her comments about results of my simulation. In next step I will upload my results analysis regarding 1. Axial Ratio 2.
hi friend! is there anyone to be farmilar with reflectarray,or did some useful work before,can give me some help about it's simulation. hi ,what kind of reflectarray cell u want? DRA , microstrip ,aperture coupled,variable slot in ground,rotated elements,proximity coupled,stacked,multilayers circular polarized,or linea
u can change the bandwidth of the antenna by increasing the size of substrate height.or u can use aperture coupled feed which will actually help reduce the coupling loss and increase your bandwidth. if u have anymore questions do let me know regards sajid mohammed. Added after 1 minutes: and somethi
in order to feed an aperture coupled antenna, because the ground is sandwiched and covered totally, how to connect the ground to a SMA connector? thanks!
Sorry to request it here: Microstrip antenna aperture-coupled to a microstripline Pozar, D.M. Electronics Letters Volume 21, Issue 2, January 17 1985 Page(s):49 - 50 Digital Object Identifier 10.1049/el:19850034
hi all,i try to know the steps design of building DRA aperturee coupled antenna at any band any reference will be good thanks alot
Hi, a.mal: Please open the file in: c:\zeland\ie3d\samples\aperpat.geo. It is an example of aperture coupled antenna. Best regards,
Hi All, I have problem in simulation of microstrip patch antenna with aperture-coupled feed. I dont know how I should define a excitation. Is there any body whom can help me.
hello i want to simulate an aperture couled micrstrip patch antenna with feko . is there any one help me and show me the steps of this simulation.
hello yes i will coupling with two line . me i want to realised an aperture couled microstrip patch antenna . but can i do under momentum i dont the steps with momentum . thanks
hello we have a simulation with feko me i want to realised an aperture couled microstrip patch antenna . but can i do under feko i dont the steps with feko . thanks
Hi all I need aperture couple antenna in HFSS9.2. or Em coupled example in HFSS. with regards vishal
how to reeduce axial ratio in aperture coupled amicrostrip antenna.
Hi all In the design of aperture coupled patch antennas, it is required that the coupling between the feedline and the patch be maximum. How can this coupling be quantified and what is it in the first place? How can it be measured? What is its relationship viz a viz current and impedance?
Hey all, I'm trying for some time now to design a patch that will have resonance at the GSM band (900MHz) as well as the DCS band (1800MHz). I used a slotted bent lines, a shorting pin, a parasitic patch, aperture coupled and just couldn't do it. The problem is that a good VSWR is not enough, I also need that the pattern in both bands w