Microwave diplexer

Details Microwave diplexer Microwave diplexer

1989-06-09

1990-11-13

Gensler, Paul

Wave transmission lines and networks

Plural channel systems

Having branched circuits

333212, H01P 1209

Patent

active

049704800

ABSTRACT:
A diplexer for electromagnetic signals of higher and lower frequency is formed of a common waveguide channel for both signals, the common channel branching into a through waveguide channel and a side waveguide channel. The through channel includes a filter having a pass band for propagation of the lower frequency signal and inhibiting propagation of the higher frequency signal. The side channel is formed as a waveguide below cut-off frequency with respect to the lower frequency signal for inhibiting propagation of the lower frequency signal while permitting propagation of the higher frequency signal. A coupling aperture formed as a slot resonant at the higher frequency is located in a waveguide wall at an integral number of quarter guide wavelengths in front of the filter for coupling the higher frequency signal between the common and the side channels.

REFERENCES:
patent: 3587008 (1971-06-01), Tsuda
patent: 4498062 (1985-02-01), Massaglia et al.
patent: 4837531 (1989-06-01), Gourlain et al.

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