Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.
Hello there, Your device is basically a dielectric so you can use the periodic structures feature of CST MWS. You can define Floquet ports and send plane wave from 1 port to other and then measure reflection and transmission. That is the way to design frequency selective surfaces and your...
Hello there Kato. You can try to elongate the back of the antenna for the bigger antenna and put a dummy cylinder behind the smaller antenna. since the waveguide characteristics won't change when you elongate the waveguides.
dark blue shows the main lobe, two light blue lines shows the half power beamwidth. red shows the far-field/radiation pattern, green circle shows sidelobe level.
You have to select all of the components from the side menu. If you click on export while only one component selected it will only select that component.
I have an S band antenna for satellite communications and when I check the copol pattern from a LHCP satellite (XTAR-EUR in my case) everything is cool.
When I switch it to RHCP with a coaxial switch to check for crosspol I get double crosspol nulls at sides of the signal and couldn't...
Hi,
I am trying to find the formula for the BER vs Eb/No curves but I only see the curves themselves as 10^-6 BER is about 10.5 Eb/No
what is the formula to get these results?
It is a graphical thing. See the mesh lines ? they match with the hexahedral mesh lines. If you have the frequency domain solver you can use it with fine triangular mesh around the edges if it is really important.
another solution to your problem is to design a waveguide bend. If you bend all of their guides to upwards or downwards you can place waveguide ports because now they will always be on the same cartesian plane.
If they are the same antennas and if you think they wont interact with each other you can take field source of the horn and then use it for simulations.
You might have a measurement error as well if you are not using a professional setup. Happened to me once where the controller unit showed 60 degrees but actually it turned the motors 90 degrees. so the radiation pattern worth of 180 degrees were crammed in 120 degrees.
AUtotracking antennas employ feeds called multimode tracking feeds. There are few versions of it.Some use 4 horn antennas and use the sum and difference of signal levels, Some use TM01 mode for tracking and some use TE21 mode for tracking. These kind of feeds use the amplitude and phase...
where is your port ? are you using slow wave structure(such as corrugated waveguide) for obtaining polarization or septum polarizer?What is your axial ratio? If you haven't done the whole system simulation but only the feed your problem might be at the polarization structure. If you have a...
I solved it. I was comparing first mode and second mode for phase angle which ofcourse gives 90 degree difference all times.If you are holding the polarizer 45 degree angled.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
