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
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Below are all of the forum threads, including all
the responses to the original posts.
Post subject: matching 2 sources to 1 antenna Posted: Wed Jun 21, 2006 2:20 pm
Joined: Thu May 18, 2006 9:46 am
I have two 50 Ohm sources, 190 MHz and 160 MHz,
10 dBm. I want to connect both sources to one lambda/4 antenna (center frequency = 175 MHz) to transmit the two
signals at the same time. Do I need something like a directional coupler because I want a high isolation between
the two sources? In addition, I need a matching circuit for both sources. Does anyone have an idea what type of
circuit design will be the best choice for this application?
Thank you for your help.
Post subject: Posted: Wed Jun 21, 2006 5:33 pm
Joined: Tue Apr 11, 2006 8:13 pm
You could use a directional coupler or a Wilkinson power divider, though at 175 MHz, it might be