Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronic 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.

Register Log in

HFSS and Ansoft Designer cosimulation problem

Status
Not open for further replies.

crayon

Newbie level 5
Joined
Nov 6, 2008
Messages
10
Helped
1
Reputation
2
Reaction score
1
Trophy points
1,283
Activity points
1,360
Hi everyone,

I am using HFSS12 and Ansoft Designer 5 for EM co-simulation. I built some simple CPW structures in HFSS and incorporated them into Ansoft Desinger using dynamic link to HFSS. But the simulation results (S-parameters) given by HFSS and nexxim were significantly different (larger than 10dB).

The structure was a CPW bend. I used Driven Terminal solution type and two wave ports, normalized to 50 ohm. In Ansoft Designer, I connected the two pins of the HFSS CPW bend component to two 50 ohm terminations. The S-parameters given by Ansoft Designer was quite different from that given by HFSS directly. The HFSS results seemed more reasonable. So I was confused...

In the past I used Agilent ADS to import the S-parameters generated by HFSS for co-simulation and it worked great. I thought Ansoft Designer would provide a smoother connection to HFSS.

Thanks for inputs!
 

tucheng

Newbie level 6
Joined
Jan 4, 2010
Messages
13
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Location
China
Activity points
1,367
crayon said:
Hi everyone,

I am using HFSS12 and Ansoft Designer 5 for EM co-simulation. I built some simple CPW structures in HFSS and incorporated them into Ansoft Desinger using dynamic link to HFSS. But the simulation results (S-parameters) given by HFSS and nexxim were significantly different (larger than 10dB).

The structure was a CPW bend. I used Driven Terminal solution type and two wave ports, normalized to 50 ohm. In Ansoft Designer, I connected the two pins of the HFSS CPW bend component to two 50 ohm terminations. The S-parameters given by Ansoft Designer was quite different from that given by HFSS directly. The HFSS results seemed more reasonable. So I was confused...

In the past I used Agilent ADS to import the S-parameters generated by HFSS for co-simulation and it worked great. I thought Ansoft Designer would provide a smoother connection to HFSS.

Thanks for inputs!
I have same question as well. What is the difference between these two approaches, "use Ansoft Designer to co-simulate with HFSS" and "use Agilent ADS to import the S-parameters generated by HFSS for co-simulation"? Which one is more accurate?
 

Status
Not open for further replies.

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Top