Formulas & Data:
- Electronics
- Mathematics
- Physics
- RF & Microwaves

Parts Vendors:
- all hand-selected

- Amateur Radio
- Vintage Articles:
- Electronics World
- Popular Electronics
- QST
- Radio & TV News
- Radio Craft
- Short Wave Craft
- Wireless World

- Events Calendar
RF Cafe Homepage
Copyright 1999-2015   •−•  ••−•    −•−•  •−  ••−•  •   "RF Cafe" in Morse Code  >> Listen to It <<
- EW & Radar Handbook
- Quizzes       - Software
- App Notes
- Calculators
- Advertise on RF Cafe
- About RF Cafe™
- RF Cafe Shirts & Mugs
- RF Cafe Archives
RF Cafe Book Contest
- RF Cafe on Visit RF Cafe on Facebook Visit RF Cafe on Twitter Visit RF Cafe on LinkedIn
- Tech Humor
- Forums Archive
- Job Board
- Donate to RF Cafe
- Kirt's Cogitations
Custom Search
More than 10,000 searchable pages indexed.
Greetings: There is so much good stuff on RF Cafe that there is no way to list or link to all of it here. Please use the Search box or the Site Map to find what you want - there is a good chance I have it. Thanks!

defining ports dipole no ground in Ansoft designer? - RF Cafe Forums

Because of the high maintenance needed to monitor and filter spammers from the RF Cafe Forums, I decided that it would be best to just archive the pages to make all the good information posted in the past available for review. It is unfortunate that the scumbags of the world ruin an otherwise useful venue for people wanting to exchanged useful ideas and views. It seems that the more formal social media like Facebook pretty much dominate this kind of venue anymore anyway, so if you would like to post something on RF Cafe's Facebook page, please do.

Below are all of the forum threads, including all the responses to the original posts.


 Post subject: defining ports dipole no ground in Ansoft designer?
Posted: Thu Jun 30, 2005 7:43 am 
Hi

I'm want to know how I should define ports to my dipole antenna in Ansoft designer? THe antenna is made on top of an substrate with only ONE metal layer (signal layer), that means no ground layer.

How should I define my ports for this dipole when I don't have an ground?
I have tried in different ways but turned up in wrong simulations.

PLease give detailed help since the port options are quite many

Does any one have an example, project file demonstrating an simulation of an dipole without groundplane?

BR


 
  
 
 Post subject:
Posted: Mon Jul 04, 2005 8:54 am 
separate the dipole into two pieces of the same length (so normally each one has got lambda/4), the gap between them should be quite small. Now you can use voltage gap source as a port (have a look at the help "gap source").


 
  
 
 Post subject: define ports dipole in Ansoft Designer
Posted: Thu Jul 07, 2005 10:27 am 
 
Lieutenant
 

Joined: Mon Jun 27, 2005 6:01 am
Posts: 4
Location: Calabria - Italy
In EM Planar Designer select Layout --> Layers and define your substrate and dipole(Signal). After select layer and draw a rectangle(your dipole). Click Edit -->Select Edges and you must select the end of rectangle.Click Draw -->Edge Port. In the Project Manager you can see Excitations , Port1. Now you can Start Analysis

Ps: I'm sorry for my English!!! :lol:


 
   
 
 Post subject:
Posted: Fri Aug 05, 2005 10:44 pm 
 
Lieutenant

Joined: Fri Aug 05, 2005 8:25 pm
Posts: 2
Location: Santa Barbara
Hello BR and others...

Did you ever successfully implement your (electric?) dipole problem?

If so would you mind sharing some od the details of your design.

I am trying to model a magnetic dipole in free space (see topic"Ansoft Design User Unite: Q on modeling a magnetic dipole" for more details) and I could use any suggestions or help.

Thanks
Ebit


 
   
 
 Post subject:
Posted: Tue Aug 09, 2005 12:58 pm 
Ebit wrote:
Hello BR and others...

Did you ever successfully implement your (electric?) dipole problem?

If so would you mind sharing some od the details of your design.

I am trying to model a magnetic dipole in free space (see topic"Ansoft Design User Unite: Q on modeling a magnetic dipole" for more details) and I could use any suggestions or help.

Thanks
Ebit


the (obvious) trick is to model the antenna exactly the way you measure it. Needless to say that you want to model the feedregion in your numerical model just like the experimental model. I assume you use a balun or an SMA endlauncher to feed the dipole? I don't have any problems modeling dipoles using HFSS




Posted  11/12/2012

Your RF Cafe
Progenitor & Webmaster

Click here to read about RF CafeKirt Blattenberger… single-handedly redefining what an engineering website should be.

View the YouTube RF Cafe Intro Video Carpe Diem!
(Seize the Day!)

5th MOB: My USAF radar shop

Airplanes and Rockets: My personal hobby website

Equine Kingdom: My daughter Sally's horse riding website