Search found 10 matches

by HexAndFlex
Mon 16 Nov 2020, 14:08
Forum: Usage
Topic: GPS antenna with zero and 90 degree feed ports
Replies: 1
Views: 181

Re: GPS antenna with zero and 90 degree feed ports

I think I have it working. The answer was buried in the forum, but needed an extra bit of digging to work out how to add a delay to a lumped port. The simplest way is to add a Delay as shown below start = [feed.pos 0 0]; stop = [feed.pos 0 substrate.thickness]; [CSX port] = AddLumpedPort(CSX, 5 ,1 ,...
by HexAndFlex
Fri 13 Nov 2020, 08:16
Forum: Usage
Topic: GPS antenna with zero and 90 degree feed ports
Replies: 1
Views: 181

GPS antenna with zero and 90 degree feed ports

Hi all, I need to do some work modelling a GPS antenna(RHCP patch). Physically, this will be fed by a 90 degree hybrid to achieve the desired circular polarization. To simplify and speed up the simulation, I don't want to try and model and simulate the hybrid. I would like to excite my antenna via 2...
by HexAndFlex
Thu 20 Aug 2020, 10:08
Forum: Usage
Topic: FDTD Matrix
Replies: 4
Views: 1445

Re: FDTD Matrix

You will need to use paraView to visualise. Also, as the material is a volumetric solid, you will probably need to do some section cuts of the data to see inside.
by HexAndFlex
Tue 18 Aug 2020, 09:46
Forum: Usage
Topic: FDTD Matrix
Replies: 4
Views: 1445

Re: FDTD Matrix

You can view the discretized model using the Debug PEC option. https://openems.de/index.php/Model_Visualization.html There is a similar option for exporting dielectric materials. I can't find it in the online docs, but if you explore the runOpenEMS function in MATLAB the info there. Both export data...
by HexAndFlex
Sat 13 Jun 2020, 13:21
Forum: Install
Topic: openEMS_x64_current.zip was not found on this server.
Replies: 1
Views: 1586

Re: openEMS_x64_current.zip was not found on this server.

Got it. Seems like the link from this page is wrong.

https://openems.de/index.php/OpenEMS#Installation

This link from the OpenEMS home page works.

https://openems.de/download/win64/openE ... 0.0.35.zip
by HexAndFlex
Sat 13 Jun 2020, 12:39
Forum: Install
Topic: openEMS_x64_current.zip was not found on this server.
Replies: 1
Views: 1586

openEMS_x64_current.zip was not found on this server.

There looks to be a problem with downloading the current windows build.

When I click the link..

https://openems.de/download/win64/openE ... urrent.zip

I get..
The requested URL /download/win64/openEMS_x64_current.zip was not found on this server.
by HexAndFlex
Thu 22 Nov 2018, 08:49
Forum: News
Topic: openEMS.de is back up again
Replies: 13
Views: 32542

Re: openEMS.de is back up again

Hi Thorsten,

The link you provided works. :D

If I try http://openems.de it automatically redirects to http://openems.de/index.php/ which is a blank screen on my device.
by HexAndFlex
Wed 21 Nov 2018, 23:08
Forum: News
Topic: openEMS.de is back up again
Replies: 13
Views: 32542

Re: openEMS.de is back up again

The main OpenEms.de site is still down for me btw. The forum working fine still.
by HexAndFlex
Tue 20 Nov 2018, 19:47
Forum: News
Topic: openEMS.de is back up again
Replies: 13
Views: 32542

Re: openEMS.de is back up again

Hi Thorsten, Good to have the site back up and running again. I have been using OpenEMS to design a log spiral antenna for amerture radio users. I have been documenting the development on my blog and hopefully pursuading some rf enthusiasts to give it a go. My blog is here https://hexandflex.com/201...
by HexAndFlex
Sat 06 Oct 2018, 11:19
Forum: Usage
Topic: Sinuous Antenna simulation
Replies: 14
Views: 10941

Re: Sinuous Antenna simulation

This has some similarities to a spiral antenna I have recently designed. See link for info https://hexandflex.com/2018/10/05/spiral-antenna-part-2-modelling-and-simulation-with-openems/amp/ First, my guess is cylidrical coordinates are better than cartesain for antennas like this. Though I confess i...