Think of bandpass as a hpf and lpf cascaded together|
with appropriate cutoff frequencies.
--- mao mu <> wrote:
> My target filter is a bandpass analog filter. With
> N=7, cheby1 returns a 14th B(s), A(s).
> But if the target is a LPF or HPF, the results are
> 7th order B(s),A(s).
> Could somebody explain why bandpass filter design
> using cheby1 doubles the order
> on B(s) and A(s)?
> maomu >
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