COMSOL Forums: Multiple input ports in RF problems

Re: Multiple input ports in RF problems

Tue, 08 Jun 2010 14:13:36 +0000

You should try to do superposition

Re: Multiple input ports in RF problems

Thu, 06 May 2010 12:17:52 +0000

Hello,

for me it says definitely
Error: 5025
More than one port used as input.
- Port number: 5,2
- Boundaries: 29,1
- Application mode: In-Plane TE Waves (rfwe)

2 input ports with differen portnumbers.. 2 and 5..

is the way to add a rfwe physics module?
but then one has to repeat the subdomain definitions..

thanks

lukas

Re: Multiple input ports in RF problems

Sat, 03 Oct 2009 15:26:15 +0000

Well, it works for me. I just designed a custom waveguide structure with 3 excited input ports and 4 output ports.

Any chance you are failing to specify unique port numbers for each port? The default port number for each port is 1. If this is your problem, then number your ports 1, 2, 3, etc, and it should work.

Multiple input ports in RF problems

Wed, 23 Sep 2009 06:36:07 +0000

Hello to everyone.

The RF module Users Guide, at page 72, says (Note at the top of the page) that it is possible to have more than an excited inport, with the drawback that S-parameters are not correctly computed.

On the contrary, COMSOL seems to not allow this: I need to excite a microwave cavity with two waveguides at the same time, but the program does not allow me to put a waveguide excitation on both ports.

Any suggestion?

Thnaks,
Roberto