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19 Threads found on edaboard.com: Tem Cst
Obviously accuracy of simulation is directly dependent of mesh but as you mentioned that you are new so in the beginning I would suggest that you can live with the mesh generated by cst. The best way is to generate one mesh get results and then see how accurate they are and then go for more refinement if needed since you are using cst (...)
I need to simulate a microwave absorber using cst, but i want to illuminate the absorber using tem wave instead of waveguide input port. Is there anybody has an expertise how to input tem wave using cst?
In my knowledge, TE mode with the angle of incident wave =0, that is tem mode.
Hi Emma, you cannot see the line impedance resulting from the hybrid mode. If it's not the tem, it means that we can not get the voltage and current, hence only wave impedance not line impedance. you need to get rid of hybrid mode
Hi everyone, I have a little problem, could you help me ? I consulted a paper about dual band using coplanar waveguide, I simulated it in cst, but the result seemed very diffferent from that paper, I mean it was wrong. Setting port is ok, beacause E at port is QUASI-tem and similar to my privious cpw simulation. Boudaries conditions a
Thank you very much for your answer. I am not sure that it is very clear to me, so I attach a picture of the input of the tem cell (including the input port) The boundary conditions are set to electrical in all directions. If one of the ports were accidentaly short/open, I suppose I wouldn't get a
Hello, I try to design a tem cell in cst but I always get wrong results. I have few questions. Do I have to draw also the air inside the tem cell or is it enough to draw the metalic eclosure and the septum, as long as I have speciefied the background material as 'normal' (which is something like vacuum)? The boundary conditions are open (...)
Related to my tem cell, I also tried to use a waveguide port for source and a lumped matched resistor for load. I don't understand what the "number of modes" refers to. It says there, in the cst help that the waveguide port "simulates an infinitely long waveguide connected to the structure" An infinitely long guide with transversal dimensions equal
in simulating FSS , I know how to simulate a plane wave incident FSS by different angle. BUT how can i simulate tem TM TE wave incident FSS arrays with HFSS?? thank you for help
hello, i have designed simple tem cell (metalic, air filled and a thin inner septum). I want to get field distribution inside the cell, but I don`t get expected results at all. I define a discret port (between the septum and the case) to feed it and the other end of the cell is left opened (I tried also to place a discrete port there) When startin
To use feed like is shown in cst picture you can use wire-port in FEKO. FYI, in EMC Studio there are also available special mdoels for Striplines and tem Cells modeling applications:
Hi, I not sure, what is FSS cell, but so you have tem mode, you probably use coax waveguide as source. In set of port you can set number of mode, the TE or tem will be set automaticly. For exemple, for rectangular waveguide the port will in TE mode automaticly, you can set number of mode.
hi well i dont know whether its possible to find the angular stability for tem . when the angle changes you no longer have tem wave as pointed out by piboo. but it decomposes into TE and TM waves. and u should get same results for normal incidence whether you use TD or FD solver. regards
whan I simulat an array structure by cst the results confuse me because the reflection phase diagram using time domain solver (!T) and frequency domain solver (!F) is quite different. (Why?) I know the results of (!T) is tem and the results of (!F) is TE and TM is any way exist to find reflection phase by (!F) for tem?
I use cst for my simulations. I want to know is any way to have different angle to illuminae an array structure for tem wave. (I know it is possible with unit cell boundary condition in frequency domain solver but it return results for TE and TM) Thanks!
for probe feed case Quasi tem mode exist at port. in cst you can see when simulation completed go to port mode option and see the e field and h field then cst automatically shows there Quasi tem mode is present.
WGA ,method using waveguide simulation instead of periodic walls,they use 2E walls,2H walls,with lower as conductor,upperwall for tem port Added after 7 minutes: WGA ,method using waveguide simulation instead of periodic walls,they use 2E walls,2H walls,with lower as conductor,upperwall for tem port
Does anyone know what kind of ports should I put at the input-port and at the load-port of a tem cell if I use h-f-s-s ? Thanks
I am simulating a 50 ou stripline in cst.But I cannot get the right result.And there are always some higher modes in wave port.Could you tell me how to set the wave port? Higher modes are appearing naturaly. You need to select the right mode for your structure (I guess the tem or Quasitem) and run analysis with this mode on