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Omni Gain-Beamwidth Relation - 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: Omni Gain-Beamwidth Relation
Posted: Wed Sep 21, 2005 4:03 am 
Hi all,
I am sure there must be a rule of thumb for the theoretical limitations of a gain & ele. angle relation. :?:
Lets say for an elevation angle of +- 70 degrees and 5dB omni possible?

thanks....


 
  
 
 Post subject: Re:
Posted: Fri Oct 21, 2005 10:46 am 
Hay,

you can roughly use this formula:

Gain[dBi]=10Log(30000/(BW1*BW2))
where:
BW1=E-plane BW in deg.
BW2=H-plane BW in deg. (360 for omni).



Posted  11/12/2012
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