Search found 9 matches

by asdf
Wed 14 Apr 2021, 10:42
Forum: Usage
Topic: Excitation setup failed!!
Replies: 2
Views: 1012

Re: Excitation setup failed!!

don't you mean
dimension * unit = dimension * 1e-3
instead of
dimension / unit = very_much
???
by asdf
Thu 01 Apr 2021, 10:01
Forum: Usage
Topic: How to make a lumped inductor?
Replies: 3
Views: 1753

Re: How to make a lumped inductor?

Yes, they do exist, eg 0402 smd inductors murata LQG15 ( https://ds.murata.co.jp/simsurfing/rfinductor.html?rgear=suaykx&rgearinfo=com ) SMD inductors are used in RF, eg matching networks of filters, eg Rigol SA 1st LO filter https://www.flickr.com/photos/eevblog/8224580349/in/album-7215763211521915...
by asdf
Tue 23 Mar 2021, 17:11
Forum: Usage
Topic: How to make a lumped inductor?
Replies: 3
Views: 1753

How to make a lumped inductor?

Hi, It looks like making lumped resistor and capacitor is easy because it's a piece of conductor or insulator between plates but inductor is not as straightforward. Does anyone know how to make a lumped inductor (something like e.g. 0402 smd chip) in a possible simple way? I imagine this could be a ...
by asdf
Mon 17 Jun 2019, 14:04
Forum: Development
Topic: I'm trying to make easy to use (clickable) simulation scripts generator
Replies: 1
Views: 4657

I'm trying to make easy to use (clickable) simulation scripts generator

Hi I think it was quite hard to learn (and still difficult for me) to write code to make the simulations with openEMS. Test scripts are very flexible but it's a lot of work (especially for beginners) to make even simple simulation of typical things (like eg. microstrip filter or other PCB components...
by asdf
Tue 11 Jun 2019, 17:11
Forum: Usage
Topic: [solved] Very basic but can't get it to work: simple MSL sim does not converge
Replies: 6
Views: 12428

Re: Very basic but can't get it to work: simple MSL sim does not converge

I looked at the geometry, I think the problems may be: 1. One port is placed at the boundary of your simulation box - your excitation is immediately absorbed by absorbing boundary condition. 2. The second port is not at the end of the line, the line should probably start on one port and finish on th...
by asdf
Thu 03 Jan 2019, 23:19
Forum: Install
Topic: No success building on Mint 19
Replies: 7
Views: 10402

Re: No success building on Mint 19

It works :) Thanks!
by asdf
Thu 03 Jan 2019, 01:58
Forum: Install
Topic: No success building on Mint 19
Replies: 7
Views: 10402

Re: No success building on Mint 19

I can't install on mint 19. I have depedencies as luis. I tried also vtk7 - it didn't help.

/home/michal/build/openEMS-Project/AppCSXCAD/main.cpp:20:10: fatal error: QVTKOpenGLWidget.h: No such file or directory
#include <QVTKOpenGLWidget.h>
^~~~~~~~~~~~~~~~~~~~
compilation terminated.
by asdf
Tue 21 Aug 2018, 01:16
Forum: Usage
Topic: Lumped elements dimensions and placement considerations
Replies: 2
Views: 4199

Re: Lumped elements dimensions and placement considerations

In the long line matched with resistors I get low reflections as expected when I use 3D boxes as matching resistors. When I change their height to 0 then I get much higher reflection than measured. Is it something wrong or special about 2D resistors? I use 2D resistor at the end of the line as a ter...
by asdf
Sat 11 Aug 2018, 13:28
Forum: Usage
Topic: Lumped elements dimensions and placement considerations
Replies: 2
Views: 4199

Lumped elements dimensions and placement considerations

Hi I've got some problems with lumped elements. I tried to simulate 100R cooplanar line matched to 50R port with matching network (two 75R resistors) and finally I got reasonable results (SWR=1.2, measured is 1.1) but it required a lot of experiments with their size and placement (resistors in simul...