| Author |
Message |
scxyz
Joined: 11 Nov 2006
Posts: 9
|
 02 Oct 2007 19:23 microwave transmission line |
|
|
|
|
| Hi, my structure is like this: dielectric substrate with relative permitivity 2.54 and thickness 1.6mm, copper stripline and its width is 4.6mm, and one ground plane. I simulated it within Radiation boundary condtion box and Perfect Electric Conditon box seperately. But sadlly, the impedance for this structure is not 50Ohmn, which it should be. I excited this structure with Lumped Port in HFSS. Does someone know what is wrong? Thanks.
|
|
| Back to top |
|
 |
ali110
Joined: 02 May 2005
Posts: 229
Helped: 68
|
02 Oct 2007 23:43 Re: problem of Microwave Transmission Line simulation in HFS |
|
|
|
|
Hi scxyz
I think it can has some reasons:
1. the termination of your transmission line
2. your radiation box isn't correct
3. you have problem with your port modeling, it's better that you excited your TL with wave port
I hope it'll be helpful
|
|
| Back to top |
|
|
Google
AdSense
|
02 Oct 2007 23:43 Ads |
|
|
|
|
|
|
| Back to top |
|
|
scxyz
Joined: 11 Nov 2006
Posts: 9
|
03 Oct 2007 2:56 Re: problem of Microwave Transmission Line simulation in HFS |
|
|
|
|
Hi, Ali110
Thanks for your help.
I am sorry that I made a mistake. It is microstrip transmission line.
I set two lumped ports with 50Ohms at the end of the transmission line.
The width of the RBC or PEC box is set to be 10*stripline width
height is set to be 10*substrate height
Would you please tell me why I need to set wave port? cause as far as I know, for microstrip line, we used to use lumped port, which is the special case of the wave port.
|
|
| Back to top |
|
|
