Yes, you can. Tune them into 50 ohm load individually. I prefer using 90
deg combiner like a branch (ring), or coupled line hybrid. Since you
are dealing with a narrow band amp, these are fine, and you get away
from the 100 ohm balanced resistor of a Wilkinson device. Being 4 port
hybrids, you put a 50 ohm load on #4, and you can watch for wasted power
when your amplifiers are not equally making power. I am combining two 2
Megawatt VHF cavity amps right now this way, and not into a perfect load
of an antenna or dummy. 73
John
K5PRO
Message: 1
Date: Wed, 9 Apr 2014 00:52:53 +0000 (UTC)
From: Paul Decker <kg7hf@comcast.net>
To: amps@contesting.com
Subject: [Amps] dual cavity
I'm making some good headway on my projects here, so time to throw out another
question.
I have two 2c39 cavities, is it possible to use a Wilkinson combiner or some
other method to parallel them up? How would the individual load and tune work
with a configuration like that?
It seems to me I could tune them each into 50 Ohms and then put the combiner on
and be pretty close.
thanks in advance for the spring board,
Paul
kg7hf
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
|