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14 Threads found on edaboard.com: Coupled Port Simulation
Hello, I am trying to do S parameter analysis for cross coupled LC oscillator. The first step is to analysis cross-pairs. I want to get the gm and C. However, I have no idea that how to set up the test schematic, since for this, there is no input. How can I set two ports? Hope somebody can help me. Thanks in advance. Best regards, Wa
GOOD DAY ALL, CAN SOME ONE PLEASE HELP ME ON HOW TO PLOT THE THEORETICAL GRAPH OF S11 = return loss, S21 = through port, S31 = coupled port, S41 = isolation port FOR A HYBRID COUPLER? MANY THANKS
There are two diff pairs, one transfers about 400M signal, and the other transfers 200MHz signal. The two pairs are parallel, i.e. the four traces are parallel. The structure is coplanar. I want to analysis the coupled factor in dB with AWR software, assume the trace width are all 60um, the separation in the diff line is 120 um. The separation be
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 (...)
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 (...)
I am having some problems with simulation of multiple coupled microstrip lines. I would like to adjust the width of the individual strips such that the input impedance of this line is 50 ohms. I am having issues with the port declaration to verify the input impedance. I have read the Waveguide port Overview in the CST Help (...)
Hello, i have strange results when simulating broadside coupled striplines. It is a 2D EM simulation with Ansoft HFSS. The waveguide port considers two modes. Impedance calculation is based on the power-current definition Zpi. simulation freqeuncy is 20 GHz. The pictures show the simulation setup, (...)
I solved it using a wave port. Only wave ports allows calculations of induced fields and coupled transmissions lines.
Dear All, I am confused on lumped-element parameters extraction in a circuit model, which is constructed by myself, from coupled line 4-port S parameters which have been obtained by layout simulation in ADS momentum. Can you show me a manual or detailed example on this topic? Thanks a lot.
Error message on simulation run -"multiple coupled wave ports are encountered in coupledports" the network is a five port help
Hi there ! I am experiencing some problems with a gap-coupled simulation that I setup... S11 params are good (resonant freq ~ 865MHz) but radiation efficiency is very low (~1% !!)... I'm using a probe to feed the patch (modeled as a discrete port). I'm attaching the geometry if someone has time to check it out :) Any help would (...)
I see that you have defined only 1 mode in port definition, but since this is a coupled line, there could be even or odd mode, so I would enable 2 modes in the port definition. EDIT: admins move this topic to a ELMG forum, cos 99% people dealing with HFSS will miss this one...
Who can give a coupled transmission line model? The coupled line consists of two strip with 4 port. 4-port S-parameter file is given by EM simulation. How can I extract the coupled capacitance of the two strips? Thanks.
How do I create a differential mode excitation when I wish to excite a pair of coupled lines in CST?