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  1. #1
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    Insertion Loss vary with phase in phase shifter

    Hi everyone,

    I'm designing an on chip phase shifter using metamaterial-based transmission line, the phase can be shifter by varying the value of a active inductor and some moscap. It can provide a phase shift 90deg@24Ghz (my desired freq) and the minimum insertion loss = 2dB. But the problem is the insertion loss varies with the phase shift (from 2dB to 8dB). I really need your help on 2 questions:
    1. Does the variation in insertion loss affect the performance of a phased-array Tx/Rx?
    2. Is there any technique that can reduce that variation.

    Please rely, thank you very much!

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  2. #2
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    Re: Insertion Loss vary with phase in phase shifter

    Sounds like your design needs some more work. Are your components Q too low, or is the impedance match just very bad for certain phase shifts?



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  3. #3
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    Insertion Loss vary with phase in phase shifter

    It happens, try to incorporate the compensator.



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