H - Electricity – 01 – P
Patent
H - Electricity
01
P
333/11
H01P 3/12 (2006.01) H01P 1/20 (2006.01) H01P 1/213 (2006.01)
Patent
CA 2015026
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.
Foster Thomas F. Jr.
Kroupa Gregory D.
Wong Mon N.
Hughes Aircraft Company
Sim & Mcburney
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