|
 |
11.1m Vertex antenna pattern cuts - RF Cafe Forums
|
| Koos
|
|
Post subject: 11.1m Vertex antenna pattern cuts
Posted: Thu Feb 25, 2010 9:35 am
|
|
Joined: Wed Sep 30, 2009
2:26 am
Posts: 6 |
|
How do I determine if the pattern cuts that I did
are withinn specs for this antenna. How do I calculate
the sidelobe gain, and is there any mask that I
can use.
Thanks
|
|
| |
|
 |
|
Paul Chriss |
|
Post subject: Re: 11.1m Vertex antenna pattern cuts
Posted: Fri Feb 26, 2010 12:41 pm
|
|
Joined: Sat Mar 04, 2006
10:12 am
Posts: 11 |
Are you talking about simulation or actual field
measurements? My suggestion would be to contact
the antenna manufacturer (or one that makes similar
antennas) and ask them for a recommended procedure.
They had to make the measurements in an OATS for
something that size so you should be able to duplicate
their setup without a lot of sophisticated equipment.
A calibrate measurement antenna and a spectrum analyzer
should let you do reasonable relative power measurements
around the antenna field. Here is a nice
collection of satellite system calculators for you.
They happened to be posted here on RF Cafe this
morning (not by RF Cafe but a link to somebody's
website). There's lots of great stuff there.
http://www.satellite-calculations.com/ |
|
Posted 11/12/2012
|
|
|
|
|
