Double-mode filter

Details Double-mode filter Double-mode filter

1987-03-03

1988-07-26

Nussbaum, Marvin L.

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

333210, 333212, H01P 1219, H01P 710

Patent

active

047603615

ABSTRACT:
A double-mode filter having double-mode resonance in each resonator, with at least two dielectric resonators being accommodated within a cut-off waveguide having a given axial length. This double-mode filter is easier to design, easier to manufacture through simplified construction, and also has smaller insertion loss. No metallic bulkhead having a coupling slot is required between each pair of stages, so that lower loss is achieved or the coupling coefficient may be analytically calculated, thus realizing high-precision design.

REFERENCES:
patent: 4489293 (1984-12-01), Fiedziuszko
patent: 4540955 (1985-09-01), Fiedziuszko
patent: 4642591 (1987-02-01), Kobayashi
patent: 4652843 (1987-03-01), Tang et al.

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