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output power loss due to VSWR - 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.


amir_h
Post subject: output power loss due to VSWR Posted: Sun Jan 08, 2006 10:45 am
hello,

In my Tx chain i have at the end a PA (power amplifier) with output VSWR of 2:1
then I have a losses due to RF cables of 1dB, and at the end of the chain there is antenna with VSWR of also 2:1
my question is if the output power of the amplifier is 50dBm, what will be the output power from the antenna.(assume the gain of the antenna is 1dB) caused by the impedance mismatch.

thanks,

amir


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Guest
Post subject: Power and SWRPosted: Sun Jan 08, 2006 11:38 pm
Quick answer:
It depends on the exact impedances and length of the transmission line.
The details matter.

Good Luck




Posted  11/12/2012
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