Microwave band-pass filter

Details Microwave band-pass filter Microwave band-pass filter

1987-03-20

1988-08-02

Nussbaum, Marvin L.

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

333202, 333203, H01P 1205, H01P 1202

Patent

active

047616245

ABSTRACT:
A microwave band pass filter comprises a band pass filter of the coaxial type which is formed by connecting plural coaxial type resonators in series through capacitors, and another band pass filter of the comb line type connected in series to the coaxial type band pass filter, wherein lower cutoff frequencies for the coaxial type band pass filter are included in a pass band for the comb line type band pass filter while higher cutoff frequencies for the comb line type band pass filter are included in a pass band for the coaxial type band pass filter, so that the skirting characteristic can be made sharp at high and low bands even with fewer resonator stages.

REFERENCES:
patent: 4255729 (1981-03-01), Fukasawa et al.
patent: 4342972 (1982-08-01), Nishikawa et al.
La Tourrette-"Wide-Bandwidth Combline Filters with High Selectivity", Conference: 1979 IEEE MTT-S International Microwave Symposium Digest, Orlando, FL, U.S.A.; (Apr. 30-May 2, 1979); pp. 275-277.

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