Radio frequency signal direction finding apparatus

Details Radio frequency signal direction finding apparatus Radio frequency signal direction finding apparatus

1983-02-03

1984-11-06

Blum, Theodore M.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

343 5SW, 343 5NQ, G01S 504

Patent

active

044815190

ABSTRACT:
A system for determining the difference in phase between a pair of radio frequency signals wherein quadrature components of one of such pair of signals are alternatively combined with the other one of such pair of radio frequency signals to provide sum and difference signals thereof. Alternative ones of such sum and different signals are alternatively coupled to an output to provide a composite signal having a phase related to the difference in phase between the pair of radio frequency signals. The composite signal is then amplified and the phase of the amplified radio frequency signal is detected to determine the difference in phase between the pair of radio frequency signals.

REFERENCES:
patent: 2426176 (1947-08-01), Busignies
patent: 2829365 (1958-04-01), Troost et al.
patent: 2997710 (1961-08-01), Cotuno
patent: 3013265 (1961-12-01), Wheeler
patent: 3050728 (1962-08-01), Worley
patent: 4135191 (1979-01-01), Sawicki

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