Coupling for dual-mode resonators and waveguide filter

Details Coupling for dual-mode resonators and waveguide filter Coupling for dual-mode resonators and waveguide filter

1991-04-29

1993-12-07

Dzierzynski, Paul M.

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

333212, H01P 1208

Patent

active

052686590

ABSTRACT:
Dual-mode resonators are coupled together to form a highly selective bandpass filter by means of a short section of waveguide. The short sections have cutoff frequencies beyond the passband of the filter. The coupling is adjustable over a wide range by means of adjustable screws. The coupling means is applicable to both empty cavities and dielectric-resonator-loaded cavities.

REFERENCES:
patent: 4291287 (1981-09-01), Young et al.
patent: 4513264 (1985-04-01), Dorey et al.
patent: 4675631 (1987-06-01), Waggett
patent: 4721933 (1988-01-01), Schwartz et al.
Zaki et al., "Canonical Longitudinal Dual-mode . . . without Iris", IEEE Trans. on Microwave Theory & Tech. vol. MTT-35, No. 12, Dec. 1987, pp. 1130-1135.
William et al., "Dual-Mode Canonical Waveguide Filters", IEEE Trans. on Microwave Theory & Tech vol. MTT-25, No. 12, Dec. 1977, pp. 1021-1026.
Atia et al., "Narrow-Bandpass Waveguide Filters", IEEE Trans. On Microwave Theory & Tech. vol. MTT-20, No. 4, Apr. 1972, pp. 259-263.

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