Dual-band antenna with periscopic supply system

Details Dual-band antenna with periscopic supply system Dual-band antenna with periscopic supply system

1979-06-18

1981-04-07

Lieberman, Eli

Communications: radio wave antennas

Antennas

Wave guide type

343781CA, 343839, H01Q 312, H01Q 1919

Patent

active

042609933

ABSTRACT:
A dual-band antenna for the transmission and reception of radiant energy has a Cassegrain-type reflector assembly, rotatable about an azimuth axis and pivotable about an elevational axis, to which two outgoing beams are directed in a transmitting mode by a periscopic supply system including a set of four mirrors, two of them flat and two of them concave. The lower-band beam originates at a first feed comprising a horizontally radiating horn and two confronting concave mirrors, one of these mirrors training the beam onto a slanting dichroic mirror reflecting same upward into the periscopic supply system. The higher-band beam originates at a second feed also comprising a horizontal horn which radiates onto a concave mirror reflecting the beam upward through the dichroic mirror into the periscopic supply system along a path coinciding with that of the other beam.

REFERENCES:
patent: 3698001 (1972-10-01), Koyama et al.
patent: 3845483 (1974-10-01), Soma et al.

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