Topband: Bias Tee question

Dave Kirk w6mqi at yahoo.com
Sat Jan 7 11:42:44 PST 2012


I’m designing a multi element receive array which
incorporates the usual  0 deg hybrid
combiner, 180 deg phase inverter, and 2:1 transformer. I’m going to use pre
amps on the antenna elements and need to supply 12 volts to them via the feed
lines through a bias tee. My question is do I need to worry about 12v being fed
back through the combiner, phase inverter, or 2:1 transformer to my receiver even
though their not physically connected or should I put .01  cap on the feed line going the my receiver for
safety.
 
 
Thanks Dave.


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