Menu

Discussion Forum

New Discussion
Filtra

Discussion Closed This discussion was created more than 6 months ago and has been closed. To start a new discussion with a link back to this one, click here.

Loop antenna

Posted 27 gen 2018, 08:47 GMT-5 Electromagnetics, Low-Frequency Electromagnetics, RF & Microwave Engineering 4 Replies

Marek Kaniński
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Hi I want to simulate a simple loop antenna which is made of copper. In this case I modelled a torus (360 deg), but I don't have any idea how to excite it. When I try adding port only errors occur. I will be grateful for any help.

4 Replies Last Post 2 feb 2018, 07:35 GMT-5
Robert Koslover Certified Consultant
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Posted: 7 years ago 27 gen 2018, 23:54 GMT-5

Cut a thin piece out of the loop and put a lumped element port there, with the direction of the imposed current (or voltage) from one side of the cut to the other. The "height" is the length of your cut segment, the "width" is 2* pi*r, where r is the small radius (i.e., of the wire, not of the overall loop).

-------------------
Scientific Applications & Research Associates (SARA) Inc.
www.comsol.com/partners-consultants/certified-consultants/sara
Cut a thin piece out of the loop and put a lumped element port there, with the direction of the imposed current (or voltage) from one side of the cut to the other. The "height" is the length of your cut segment, the "width" is 2* pi*r, where r is the small radius (i.e., of the wire, not of the overall loop).
Marek Kaniński
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Posted: 7 years ago 28 gen 2018, 13:07 GMT-5

Could you please show me how to do that? I am trying but the effect is disappointing.

Could you please show me how to do that? I am trying but the effect is disappointing.
Robert Koslover Certified Consultant
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Posted: 7 years ago 30 gen 2018, 00:04 GMT-5

I encourage you to post your file to this forum. Then, I or others can look at it and one of us may tell you what is wrong.

-------------------
Scientific Applications & Research Associates (SARA) Inc.
www.comsol.com/partners-consultants/certified-consultants/sara
I encourage you to post your file to this forum. Then, I or others can look at it and one of us may tell you what is wrong.
Sherry
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Posted: 7 years ago 2 feb 2018, 07:35 GMT-5

Hi

I have the similar issue. I've modelled a loop antenna and when I excite it with lumped port, I receive different S11 result in comparison to CST. Both works at the same frequency but in COMSOL I see mismatch in my design. in CST: @ 2.4 GHz ---> S11=-30 dB In COMSOL: @ 2.4 GHz ---> S11=-15 dB

Can anyone help me?

Thanks

Hi I have the similar issue. I've modelled a loop antenna and when I excite it with lumped port, I receive different S11 result in comparison to CST. Both works at the same frequency but in COMSOL I see mismatch in my design. in CST: @ 2.4 GHz ---> S11=-30 dB In COMSOL: @ 2.4 GHz ---> S11=-15 dB Can anyone help me? Thanks

Note that while COMSOL employees may participate in the discussion forum, COMSOL® software users who are on-subscription should submit their questions via the Support Center for a more comprehensive response from the Technical Support team.

Suggested Content