matching 2 sources to 1 antenna - RF Cafe Forums
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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 quite big.