need help in designing tunable filter using varactor

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cddxdlk

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tunable filter help

hi
i want to design the tunable LC filter using varactor, i choose BB809 in my circuit.

the input P1dB of the LC filter is 10dBm, can you tell me how to improve the input P1dB, how to choose the varactor to realize the high P1dB
3xs
 

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