Specifying power and frequency of an antenna?

How to use openEMS. Discussion on examples, tutorials etc

Moderator: thorsten

Post Reply
wongdyo
Posts: 4
Joined: Mon 31 Mar 2014, 09:15

Specifying power and frequency of an antenna?

Post by wongdyo » Mon 31 Mar 2014, 09:38

Hello,

I'm fairly new to openEMS, and as part of some preliminary work on a project, I would like to replicate some SAR results obtained in this paper: http://link.springer.com/article/10.100 ... 005-4288-4. The authors used SEMCAD, another 3D FDTD numerical tool, to obtain their results. They specify that they fed their antennas with a 250 mW continuous-waveform source at 1.8 GHz. Is there a way to define such a source in openEMS? I can't seem to find a tutorial or entry in the manual which shows how to specify a particular antenna feed power.

Cheers,
Dickson

thorsten
Posts: 1393
Joined: Mon 27 Jun 2011, 12:26

Re: Specifying power and frequency of an antenna?

Post by thorsten » Mon 31 Mar 2014, 19:47

Hi,

in my opinion it does not make any sense to excite at only one frequency with a specific power... Just calculate the accepted input power from the results and normalize to that power... Thus you get everything based on e.g. 1W... Later you can re-normalize that to whatever value you want...

In this Tutorial for example I do a full power budget...

regards
Thorsten

openems
Posts: 16
Joined: Tue 24 Mar 2020, 06:07

Re: Specifying power and frequency of an antenna?

Post by openems » Tue 24 Mar 2020, 06:19

Can't we use sinusexcite for that?
It will give power to one frequency?

thorsten
Posts: 1393
Joined: Mon 27 Jun 2011, 12:26

Re: Specifying power and frequency of an antenna?

Post by thorsten » Tue 24 Mar 2020, 09:20

Yes you could, but sinus excite does not converge as nicely and you limit yourself to only this frequency without any/much benefit...

openems
Posts: 16
Joined: Tue 24 Mar 2020, 06:07

Re: Specifying power and frequency of an antenna?

Post by openems » Fri 03 Apr 2020, 09:15

Yeah, it makes sense!
Thank you for the reply :)

Post Reply