Post subject: RF to DC converter
Unread post Posted:
Fri Feb 11, 2005 5:29 pm
I have an HF amp that produces 1KW.
I run this thru a bi-directional coupler with -30db forward port. I
need to build an ALC circuit to turn my driver down when the amp begins
to overdrive. My exciter external ALC circuit expects to see 0Vdc when
no turn-down is needed, and up to -4Vdc when the amp reaches distortion.
I need a circuit that will take an RF signal in the HF band and develop
an adjustable 0 to -4Vdc out. Any ideas or sources.
Thanks very much.
Sat Feb 12, 2005 1:44 pm
Check out Analog Devices - they have
some excellent RF-to-DC converters.
Unread postPosted: Tue Feb 15,
2005 12:32 pm
Yes AD. they have linear and logrithmic ICs