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Hi realfanta:
I cannot give you feedback on the deembeding of discrete ports on CST (I'm sure Johnjoe is speaking from his expeience and you should go with his suggestion) as I have not had to deal with it so far.
Regarding the need to use discrete ports as internal type ports, considering you...
I totally agree with JohnJoe. From what I have read during last days, and having some experience other electromagnetic simulators (ADS, HFSS), discrete ports are more apropiate to microstrip like structures, they are not as precise for CPW (either without or with backside metalization). By the...
Thanks for replying. I forgot to mention in the other post that besides increasing the number of pulses I also increased the AR accuracy to -40dB when performing the simulations. I was also keeping an eye on port signales in 1D (o1,1 and o2,1) to see for ripples, and at the begining of time...
I fully agree with what JohnJoe is saying. Even though I am new to CST, a waveguide like CPW should be feed using waveguide ports placed at the edges of your structure. And you shoud be very careful in chosing the lateral extension of your top GND planes as at very high frequencies (where...
Thank you JohnJoe:
Meanwhile looking for a feedback on the topic I reasearched more and found that, indeed the Ar filter is used when having resonant structures. And probably I have to use it since I am simulating CBCPW at very high frequencies (up to 300GHz), where finite ground widths can...
Hello everyone:
I have an issue with understanding which set of S-parameters should I use from CST MWS simulation of a CBCPW 50 ohm line. I come from an ADS background (both Momentum as well as Schematic), and CST is fairly new to me.
I want to test a CBCPW 50 ohm line up to 300GHz. I saw that...
Hello again:
Thank you for being so prompt and giving me your feednack on the problem. We were on the same page with discontinuities, in fact where I have T junctions I use airbridges (even though you say that if placing enogh vias along the CPW top planes you can avoid the use of the...
Hello:
Thaks for giving me your feedback. It's just what I was afraid of. I knew it would be very possible that slot based simulation could yield more optimistic results than it would rather happen in practice.
If yoy say using single ports on strip based model is best choice to follow, what...
Hi there:
I am trying to figure out which is the best way of simulating a CBCPW (conductor backed CPW) in Mometum ADS 2009. I am using a GaAs substrate (E_r=12.9, loss tg=0.006 and h=100um) as dielectric. I am trying to simulate high frequency structures (up to 300GHz).
I have tried...
Re: cpw simulation ads
Hello Asturias!
I myself am right now experiencing the same related issues regarding the difference between schematic and MoM co-simulation of a simple CPW structure. I tried with with both internal and single port on the conducting strip and still I have differences...
Hello:
I come to you guys with a question.
I am designing and simulating a CPW structure in Momentum ADS 2009. On the layer I am working on I have defined slot structure, so basically I place 2 slots that have between the conductor line and on the other side of each slot there are the "semi...
Hello,
I have some measurement results of an antenna saved in a text file. There are 6 columns of data (1.theta angle, 2.phi angle, 3.module and 4.phase-for copolar component; and 5.module and 6.phase-for crosspolar component)
What I want to do is plot the radiation diagrams for the co-polar...
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