Method and apparatus for self-calibration and testing of ZPSK tr

Details Method and apparatus for self-calibration and testing of ZPSK tr Method and apparatus for self-calibration and testing of ZPSK tr

1995-10-13

1999-11-30

Pham, Chi H.

Pulse or digital communications

Testing

371 205, 371285, 379 6, H04B 346, H04B 1700

Patent

active

059955414

ABSTRACT:
A method and a circuit for self-calibration and testing QPSK transmitter/receiver IC's is provided. The method and circuit enable variable error parameters such as gain mismatch, offset voltages, and phase errors inherent in the circuit and signals to be measured and taken into account by the digital signal processors for minimum bit error rates during cellular communications.

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"Automatic Adjustment of Quadrature Modulators", Electronics Letters, Jan. 31, 1991, vol. 27, No. 3 pp. 214-216.

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