Radio frequency signal direction finding system

Details Radio frequency signal direction finding system Radio frequency signal direction finding system

1977-03-09

1978-08-15

Moskowitz, Nelson

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

343754, G01S 320

Patent

active

041076923

ABSTRACT:
A radio frequency signal direction finding system wherein radio frequency signals received at output ports of a multibeam array antenna are sequentially sampled, in response to a sampling signal, at a frequency f.sub.s. The sampled signals are fed to a receiver channel which is tuned to the sampling frequency to produce a composite signal having a frequency f.sub.s and a phase angle, relative to a reference phase angle of the sampling signal, which provides an indication of the relative signal levels received at the output ports and hence an indication of the angular direction of a source of the radio frequency signals.

REFERENCES:
patent: 2969541 (1961-01-01), Seaman
patent: 3054105 (1957-05-01), Steiner et al.
patent: 3121871 (1962-02-01), Beukers
patent: 3761936 (1973-09-01), Archer et al.

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