Search found 1376 matches

by thorsten
Tue 07 Apr 2020, 08:31
Forum: Usage
Topic: Questions on Simple_Patch_Antenna.m
Replies: 2
Views: 13

Re: Questions on Simple_Patch_Antenna.m

s kappa the loss of the material? Is the 1e-3 part the loss tangent? Kappa is the conductivity of the material and yes the 1e-3 is the loss tangent indeed. I am not sure why it is multiplied by 2.45e9, especially when the simulation is supposed to cover +/- 1 GHz of the center frequency. If I were ...
by thorsten
Fri 03 Apr 2020, 08:46
Forum: Usage
Topic: Using multiple port
Replies: 1
Views: 40

Re: Using multiple port

In each simulation each active port is excited. If you want an s11 and s21, you have to active port 1 and deactivate port 2. For s22 and s12 you need ti do another simulation with port 2 active and port 1 inactive. If you excite port 1 and 2 and the coupling is very very small you could calculate s1...
by thorsten
Fri 03 Apr 2020, 08:01
Forum: Usage
Topic: SAR box size
Replies: 1
Views: 33

Re: SAR box size

You define the size of your (SAR) dump box as you would any dump box. Around the area that you are interested to observe your data (SAR).
by thorsten
Fri 03 Apr 2020, 07:59
Forum: Usage
Topic: Understanding lumped element
Replies: 1
Views: 119

Re: Understanding lumped element

Lots of questions. If I remember correctly the "L" part is not implemented/available for the lumped element. Only R and C. If you do not set any you get the warning and the element is ignored. As for the size, if should behave similar to reality. If it is too large it does not behave very good any m...
by thorsten
Tue 24 Mar 2020, 09:27
Forum: Usage
Topic: About the accuracy of the SAR from 3 phantom model
Replies: 2
Views: 140

Re: About the accuracy of the SAR from 3 phantom model

What is a 3 phantom model?
Have you looked at the tutorials covering SAR?
You should not use sinusexcite. It takes longer and is difficult to determine convergence.
1.5W/kg difference does not say anything....
by thorsten
Tue 24 Mar 2020, 09:25
Forum: Development
Topic: CPU affinity / speed improvement
Replies: 1
Views: 289

Re: CPU affinity / speed improvement

Post your changes on github for me and others to review.
by thorsten
Tue 24 Mar 2020, 09:20
Forum: Usage
Topic: Specifying power and frequency of an antenna?
Replies: 4
Views: 2408

Re: Specifying power and frequency of an antenna?

Yes you could, but sinus excite does not converge as nicely and you limit yourself to only this frequency without any/much benefit...
by thorsten
Tue 03 Mar 2020, 20:21
Forum: Usage
Topic: Polygon Import from Gerber Data
Replies: 3
Views: 775

Re: Polygon Import from Gerber Data

I have not yet looked at your data. But I guess you may go step by step and look at different stages of your polys. Make sure it is one continuous array of points and that inside and outside (left/right of the line) is always consistent... E.g. let matlab calculate the polygon area and make sure it ...
by thorsten
Tue 03 Mar 2020, 20:18
Forum: Usage
Topic: Viewing PML / drawing nonphysical primitives
Replies: 3
Views: 635

Re: Viewing PML / drawing nonphysical primitives

What about an "air" material with low priority. It should not hurt anything and you can use it to visualize whatever you want...

regards
Thorsten
by thorsten
Wed 26 Feb 2020, 23:39
Forum: Usage
Topic: What is the relation of amplitude returned by harminv() to abs(fft(voltage)) ?
Replies: 3
Views: 1137

Re: What is the relation of amplitude returned by harminv() to abs(fft(voltage)) ?

Did you have a look at the corresponding harminv.m file that you should use? I personally have never used harminv and thus if the matlab file does not help you will have to refer to the harminv documentation.

regards
Thorsten