Continue to Site

Welcome to EDAboard.com

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.

GSG excitation in EM simulator

Status
Not open for further replies.

wighou

Member level 3
Joined
Jun 14, 2010
Messages
56
Helped
3
Reputation
6
Reaction score
3
Trophy points
1,288
Activity points
1,668
Hello,

I know GSG excitation is really complex in HFSS. It is necessary to make a pec bridge as shown in: https://orbit.dtu.dk/en/publication...ng(1175873f-e1a5-4927-81a3-c18437023771).html
And after, we have to deembbed this bridge for more accuracy.
Another solution, not to change the structure adding a bridge, would be to use 2 lumped ports, one for GS, another for SG, and combine them in pos-simulation to make one port. It is simple.
But in HFSS for example, the analysis is made exciting all ports sequentially to compute at the end S-parameters. In this case, when GS port is excited for example, the other ground side is not grounded, as it is connected to signal path by a terminal (a resistor). I think that it can produce inaccurate results. It exists an option "Composite excitation" to excite all ports at the same time. But, using this option, S-parameters are not calculated.
If it would be possible to excite GS and SG ports at the same time during EM calculation, we could ensure that both sides are grounded at the same time.

Anyone, know if any EM simulator can do that? CST, Sonnet, ... ?

Thanks,
Emmanuel
 

I have used Sonnet and Momentum with composite ports (-)(+)(-) for GSG.
6 pins -> 2 ports

 
  • Like
Reactions: wighou

    wighou

    Points: 2
    Helpful Answer Positive Rating
Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top