Imbalance correction of in-phase and quadrature phase return sig

Details Imbalance correction of in-phase and quadrature phase return sig Imbalance correction of in-phase and quadrature phase return sig

1993-06-01

1994-11-29

Sotomayor, John B.

Communications: directive radio wave systems and devices (e.g.,

With particular circuit

Complex signal

342174, 342162, 342151, G01S 740

Patent

active

053694112

ABSTRACT:
A method of correcting phase and amplitude imbalances of I and Q components using digital correction coefficients. The amplitude Gc and phase coefficient Pc obtained solely in the time domain from a pilot signal. The I and Q components of the pilot signal are sampled over at least one integer cycle after which the number of samples taken during an integer number of cycles is determined for the samples of the component with the steepest slope. The sums of self and cross products are used to calculate the coefficients.

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patent: 5150128 (1992-09-01), Konkelbeck
patent: 5248982 (1993-09-01), Reinhardt et al.
patent: 5293325 (1994-03-01), Roos

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