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High pass filter design

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haitaoz

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How to improve the out band rejection,especially lower than the band frequency,and the insertion loss is less than 3 dB?Thanks in advance!
 

vfone

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Use an Eliptical type topology.
 

    haitaoz

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haitaoz

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Could you please post some reference for that?

Thanks a lot!
 

Borber

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Chebyshev has best out-of-band attenuation, Eliptic has steepest slope and smaller attenuation for the same filter order.
Specify cutoff frequency, minimum out-of-band attenuation at specified frequency, alowed passband ripple and how cutoff frequency is defined by ripple or 3dB attenuation.
 

    haitaoz

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