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11.1m Vertex antenna pattern cuts - 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: 11.1m Vertex antenna pattern cuts
Posted: Thu Feb 25, 2010 9:35 am 
 
Captain

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


 
   
 
 Post subject: Re: 11.1m Vertex antenna pattern cuts
Posted: Fri Feb 26, 2010 12:41 pm 
 
Captain

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
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