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How to design a phase shifter with bandwidth of 80MHz

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vivek1214

vivek1214

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Hello all,
Is it possible to design phase shifter of bandwidth around 80MHz.
If someone has material on it then pls provide
 

Re: Phase shifter

You need to specify the center frequency. One method is to use variable capacitor diodes and a branch line coupler.
 

Re: Phase shifter

means we can design.
can you give me some material on it
 

Re: Phase shifter

Sure, easy as falling off a log! You would, of course, use lumped elements. I have a bunch I bought on ebay (mechanically tunable) that have coils and capacitors in side and work great at 75 MHz.

Electronically tunable, the only trick would be to get a big enough capacitance varactor diode. Probably need one around 22 pF at 0 V.
 

Re: Phase shifter

Start with a brahcnline coupler at your frequency. Top left is input, bottom left is output the two right ports have equal reactances to ground.
 

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