Phased array radars

Details Phased array radars Phased array radars

1976-05-14

1977-11-29

Tubbesing, T.H.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

343100SA, G01S 740

Patent

active

040608069

ABSTRACT:
A phased array radar having a plurality of antennae, each connected with a respective receiving channel, is provided with apparatus to suppress variations in phase and gain in the receiving channels. The apparatus injects a reference signal into a normally provided head amplifier in each channel, which then passes through the same amplification and frequency changing circuits as the signal induced in each antennae. Thus the differential phase shifts of the reference signal and the radar carrier frequency are substantially constant. The gains of the head amplifiers are controlled by the action of an AGC loop.

REFERENCES:
patent: 3471855 (1969-10-01), Thompson
patent: 3964065 (1976-06-01), Roberts et al.
patent: 3967279 (1976-06-01), Zeger

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