Automatic direction finder

Details Automatic direction finder Automatic direction finder

1981-11-06

1985-03-26

Tubbesing, T. H.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

G01S 504

Patent

active

045076634

ABSTRACT:
An automatic direction finder for automatically finding the arriving direction of electric waves by rotating a goniometer or the like with the use of a stepping motor is described. The stepping motor is controlled by means of a digital circuit using a reversible counter. The polarities of the phase of the output demodulated by a receiving circuit are detected in terms of the antinodes thereof.

REFERENCES:
patent: 3701155 (1972-10-01), Adams
patent: 4306240 (1981-12-01), Yasuda
patent: 4368470 (1983-01-01), Mori et al.

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