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Power RF - 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: Power RF
Posted: Mon May 21, 2007 2:36 am 
 
Lieutenant

Joined: Mon May 21, 2007 2:19 am
Posts: 2
Hi,
I have a RF cable with 8 signals at 42 dBm (modulation GMSK). I would like to know the total power (average and peak) and how can I calculate it ?
Thanks for your help.


 
   
 
 Post subject:
Posted: Fri Jun 22, 2007 8:00 am 
 
Site Admin
User avatar

Joined: Mon Jun 27, 2005 2:02 pm
Posts: 392
Location: Germany
Hello,

Each multiplication of the signal level adds 3dB, so for example if you have 2 signals at +42dBm level eahc, the composite level will be +45dBm, If other 2 signals further increas by 2 the previous level (+45dBm) then the level now will be +48dBm and so on.

I am not sure about the PAR of GMSK modulation, but I think that is hould be lower than 3dB. If you measure the power with output power meter (Average) then just add the PAR value and you will get the peak power.




Posted  11/12/2012
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