Linear phased filter for reducing ripple in group delay

Details Linear phased filter for reducing ripple in group delay Linear phased filter for reducing ripple in group delay

1992-01-15

1993-10-26

Gensler, Paul

Wave transmission lines and networks

Coupling networks

Equalizers

333167, 333175, H03H 701

Patent

active

052569977

ABSTRACT:
A first filter the group delay of which in the pass band contains a ripple is connected to a second filter so as to cancel the ripple. The second filter has a pass band at least within the pass band of the first filter. The gain of the second filter is reduced gradually from the frequency of the minimum attenuation into the lower and higher frequency regions and the group delay thereof is reduced gradually from the frequency of the minimum attenuation into the lower and higher frequency regions.

REFERENCES:
patent: 2181499 (1939-11-01), Wheeler
patent: 3047823 (1962-07-01), Ranky
patent: 3530408 (1970-09-01), Brandon et al.
patent: 3673521 (1972-06-01), Yuguchi
patent: 3794938 (1974-02-01), Boelter
patent: 4263619 (1981-04-01), Theriault
patent: 4395688 (1983-07-01), Sellers
patent: 4454487 (1984-06-01), Darmouri

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