Advertisment: Broadband via satellite
Advertisment: Worldwide satellite services from Ground Control Company

www.satsig.net

Satellite Internet Forum.

Welcome, Guest.        Forum rules.
      Home            Login            Register          
Pages: 1

Prodelin / GD Satcom antennas and ABCD measurments

(Read 3249 times)
Admin1
YaBB Admin
★★★★★
Offline



Posts: 1189
Jan 31st, 2012 at 11:03am  
I have found this page:
-- broken link -
which lists all the pdf documents providing the reference ABCD measurements for the feed positions of all Prodelin antennas.

Best regards, Eric.
Back to top
« Last Edit: Sep 30th, 2023 at 11:37am by Admin1 »  
WWW  
IP Logged
 
Admin1
YaBB Admin
★★★★★
Offline



Posts: 1189
Reply #1 - Sep 30th, 2023 at 9:46am  
The best document I can find, dated 2014 is:

https://www.satsig.net/prodelin/TD0641-May-2014-Rev-N.pdf

This provides the ABCD measurements for many Prodelin/ GD Satcom antennas.

In each case the phase centre (or focal point) will be somewhere in the feed, but on the axis of the feed. It varies according to design of feed, thus multiple ABCD measurements for different frequencies.

I hope this helps.

Eric
Back to top
« Last Edit: Sep 30th, 2023 at 1:33pm by Admin1 »  
WWW  
IP Logged
 
Admin1
YaBB Admin
★★★★★
Offline



Posts: 1189
Reply #2 - Sep 30th, 2023 at 11:39am  
If anyone is interested you could put all the ABCD figures into a spreadsheet. Then average the pairs AB and CD to get the centre of the feed aperture window. Then speculate as to the position of the phase centre at or inside the feed aperture window for each frequency and feed type!.
Back to top
 
WWW  
IP Logged
 
Pages: 1