W
whit3rd
Guest
On Tuesday, January 13, 2015 at 12:17:39 PM UTC-8, Jim Thompson wrote:
Buffer the RF input, and delay it (only takes a few inches of transmission line)
to generate a 90 degree phase-shift.
Then, wiggle two transistor bases with both those signals.
Current-modulate the differential emitter current with your voltage input.
Sum the collector currents, of course.
Anyone have ideas regarding how to implement a voltage-variable phase
shifter useable at 210MHz?
Buffer the RF input, and delay it (only takes a few inches of transmission line)
to generate a 90 degree phase-shift.
Then, wiggle two transistor bases with both those signals.
Current-modulate the differential emitter current with your voltage input.
Sum the collector currents, of course.