Radio frequency beam forming network

Details Radio frequency beam forming network Radio frequency beam forming network

1976-04-02

1978-05-16

Wilbur, Maynard R.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

343100R, 343854, H01Q 326

Patent

active

040901998

ABSTRACT:
A radio frequency beam forming network is disclosed wherein a plurality of antenna feed elements arranged in the focal plane of a radio frequency lens is coupled to corresponding input ports of a radio frequency energy distributing means. Output ports of such radio frequency energy distributing means are coupled to a receiver/transmitter through different paths. Disposed in the different paths are active elements, including variable phase shifters and attenuators. The active elements, in response to control signals, provide proper attenuation and phase shift to the signals passing therethrough thereby to form a desired antenna beam. Such antenna beam is comprised of one or more "spot" beams. With such arrangements failure of a single one of the active elements will only slightly degrade system performance without resulting in a complete loss of any one of the "spot" beams.

REFERENCES:
patent: 3380052 (1968-04-01), Drabowitch et al.
patent: 3500412 (1970-03-01), Trigon
patent: 3731316 (1973-05-01), Sheleg
patent: 3993999 (1976-11-01), Hemmi et al.

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