Dual frequency feed apparatus

Details Dual frequency feed apparatus Dual frequency feed apparatus

1987-01-21

1989-05-09

Sikes, William L.

Communications: radio wave antennas

Antennas

Wave guide type

343772, 343786, H01Q 2130

Patent

active

048293156

ABSTRACT:
The invention comprises a switching mechanism for a micro wave signal dish receiver apparatus. The mechanism has means for switching a wave guide of a 12 GHZ frequency signal into and out of concentric alignment with the center of a 4 GHZ wave guide of the apparatus. The 12 GHZ wave guide when switched out of alignment is retracted so as not to interfere with the 4 GHZ wave guide while the 4 GHZ wave guide is made operative to receive a signal of that frequency. The mechanism can project the 12 GHZ guide into the center of the 4 GHZ wave guide to receive a signal of a 12 GHZ frequency at the same focal point substantially as the focal point of the 4 GHZ, without the 4 GHZ wave guide interfering with the 12 GHZ wave guide operation.

REFERENCES:
patent: 3025515 (1962-03-01), Fairbanks

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