Method of compensating for imbalances in a quadrature demodulato

Details Method of compensating for imbalances in a quadrature demodulato Method of compensating for imbalances in a quadrature demodulato

1974-10-03

1977-01-11

Tubbesing, T.H.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

343 5DP, 343 77, 343 172PC, G01S 740

Patent

active

040030547

ABSTRACT:
A method for correcting errors due to imbalances between the two channels of a quadrature demodulator in a radar system is shown. The contemplated method comprises generally the steps of measuring, by performing a Fourier transform on a test signal periodically impressed on the quadrature demodulator, the amplitude and phase imbalances between such channels and then deriving correction coefficients to compensate for such imbalances during operation.

REFERENCES:
patent: 3680105 (1972-07-01), Goldstone
patent: 3950750 (1976-04-01), Churchill et al.

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