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Help. About phase shifters.

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cicierror

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Hello!
I want to design a 360 degree reflection-type analogue phase shifter by using varactor diodes and a coupled-line coupler. I have finished the design of the coupler. But now I don't know how to design the loads to realize 360 degree phase shift. My theory can only realize 180 degree. Could someone give me a hand, please?
If you could, you can send me a E-mail or a QICQ messege. You can also reply here. Thanks.:lol:
 

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