Title :
Automatic calibration of quadrature balance in cartesian loop amplifier
Author :
Sedinin, V.I. ; Mikushin, A.V. ; Zagoroyko, M.N.
Abstract :
This report describes the method for adaptively pre-distorting the drive signal to the Cartesian amplifier to reduce the level of quadrature imbalance. The procedure involves a calibration procedure implemented on a Digital Signal Processor (DSP) that is either carried out periodically during transmission or prior to each transmission depending on the total transmit time. Recommendations for the choice of Cartesian loop amplifier parameters are wesented as a result of the analysis.
Keywords :
Calibration; Communication channels; Frequency measurement; Low-frequency noise; Noise measurement; Power measurement; Quantization; Signal sampling; Umbilical cable; Voltage;
Conference_Titel :
Electronic Instrument Engineering Proceedings, 2004. APEIE 2004. 2004 7th International Conference on Actual Problems of
Conference_Location :
Novosibirsk, Russia
Print_ISBN :
0-7803-8476-8
