Odd order elliptic function narrow band-pass microwave filter

Details Odd order elliptic function narrow band-pass microwave filter Odd order elliptic function narrow band-pass microwave filter

1978-07-19

1981-01-20

Nussbaum, Marvin L.

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

333212, 333230, H01P 1208, H01P 1209, H01P 706

Patent

active

042465559

ABSTRACT:
Multiple coupled high Q cavities are used to generate odd order elliptic function band-pass filters using a minimum number of cavities connected by simple and resonant coupling elements. A specific embodiment of a 3-pole, 20 MHz band-pass wave guide cavity filter centered at 3890 MHz is disclosed. Couplings between cavities may be either on the end walls or the side walls. The simple coupling elements may be simple coupling holes, and the resonant coupling elements may be a non-shorting screw in a window between cavities.

REFERENCES:
patent: 3153208 (1964-10-01), Riblet
patent: 3737816 (1973-06-01), Honicke
patent: 3969692 (1976-07-01), Williams et al.

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