Millimeter wave suspended substrate multiplexer

Details Millimeter wave suspended substrate multiplexer Millimeter wave suspended substrate multiplexer

1982-01-21

1984-02-21

Gensler, Paul L.

Wave transmission lines and networks

Plural channel systems

Having branched circuits

333116, 333204, 333246, H01P 1213

Patent

active

044333145

ABSTRACT:
A millimeter wave suspended substrate multiplexer is disclosed which is comprised of a plurality of hybrid-filter-hybrid channel dropping sections. The components of the multiplexer are enclosed in a metallic housing forming a cavity surrounding the multiplexer components. Each of the hybrid-filter-hybrid sections is comprised of first and second 90.degree. hybrid couplers which are connected by a pair of identical bandpass filters. Spurious waveguide energy propagation modes which would otherwise be generated in the cavity surrounding the 90.degree. suspended hybrid couplers are eliminated by the use of a plurality of mode suppression pins extending between the top and bottom portions of the metallic housing and passing through the branch lines of the couplers.

REFERENCES:
patent: 2922123 (1960-01-01), Cohn
patent: 3135935 (1964-06-01), Engelbrecht
patent: 3772616 (1973-11-01), Imoto
patent: 4029902 (1977-06-01), Bell, Jr. et al.
patent: 4159454 (1979-06-01), Willmore
patent: 4210881 (1980-07-01), Rubin
Weir et al., Wideband Multiplexers Using Directional Filters, Microwaves, y 1969, vol. 8, No. 5, pp. 44-50.

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