Search found 4 matches

by mpred
Tue 18 Feb 2020, 13:09
Forum: Usage
Topic: [solved] Radial stub convergence confusion
Replies: 5
Views: 2711

Re: Radial stub convergence confusion

Thanks for picking that up -- it seems to have solved the problem! I changed all absorbing bounds to PML_8 and expanded the box a bit to make sure there are plenty of cells for the boundary, and now both top and bottom configurations converge after ~10k timesteps. Keep the bigger box but change back...
by mpred
Mon 17 Feb 2020, 07:43
Forum: Usage
Topic: [solved] Radial stub convergence confusion
Replies: 5
Views: 2711

Re: Radial stub convergence confusion

A little more investigation: The results seem exactly the same between the runs that terminate early, and those that have the non-decaying energy. In fact, I just kicked NrTS up to a safe number & got some very nice results for my complete filters -- so thank you! :) So this is really just a quality...
by mpred
Fri 14 Feb 2020, 07:27
Forum: Usage
Topic: [solved] Radial stub convergence confusion
Replies: 5
Views: 2711

Re: Radial stub convergence confusion

Follow-up: for that code to work, AddMRStub.m needs to be patched, by changing the last line to: CSX = AddPolygon( CSX, materialname, prio, idx_elevation-1, elevation, p ); I also tried changing the stub angle in AddMRStub from -90 to 270, in case there was some kind of handedness issue at play, but...
by mpred
Fri 14 Feb 2020, 07:13
Forum: Usage
Topic: [solved] Radial stub convergence confusion
Replies: 5
Views: 2711

[solved] Radial stub convergence confusion

Hi all, I'm just getting started with openEMS so apologies if this ends up being a stupid question! I'm trying to model a microstrip distributed element filter that uses radial stubs, and have run into a strange convergence problem. When the MS stub is pointing up (in the +y direction) everything wo...