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Specifying power and frequency of an antenna?

Posted: Mon 31 Mar 2014, 09:38
by wongdyo
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

Re: Specifying power and frequency of an antenna?

Posted: Mon 31 Mar 2014, 19:47
by thorsten
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

Re: Specifying power and frequency of an antenna?

Posted: Tue 24 Mar 2020, 06:19
by openems
Can't we use sinusexcite for that?
It will give power to one frequency?

Re: Specifying power and frequency of an antenna?

Posted: Tue 24 Mar 2020, 09:20
by thorsten
Yes you could, but sinus excite does not converge as nicely and you limit yourself to only this frequency without any/much benefit...

Re: Specifying power and frequency of an antenna?

Posted: Fri 03 Apr 2020, 09:15
by openems
Yeah, it makes sense!
Thank you for the reply :)