Title :
A self-calibrating quadrature mixing front-end for SDR
Author :
De Witt, Josias J. ; Van Rooyen, Gert-Jan
Author_Institution :
Stellenbosch Univ., Stellenbosch
Abstract :
A quadrature mixing front-end is well-suited toward software define radio (SDR) applications, due to its low complexity and the inherent flexibility that it affords the radio front-end. Its performance is, however, severely affected by gain and phase mismatches between its two signal paths, as well as the presence of unwanted DC offsets. This paper presents solutions for a self-calibrating quadrature transceiver. Practical implementation results indicate a significant improvement in the image and offset rejection capabilities of such a calibrated transceiver.
Keywords :
calibration; software radio; transceivers; self-calibrating quadrature mixing front-end transceiver; software defined radio; Africa; Application software; Baseband; Communication standards; Filters; Frequency; Hardware; Performance gain; Topology; Transceivers; Communication system performance; I/Q imbalance compensation; quadrature mixing; radio communication equipment; software defined radio;
Conference_Titel :
Radio and Wireless Symposium, 2008 IEEE
Conference_Location :
Orlando, FL
Print_ISBN :
978-1-4244-1462-8
Electronic_ISBN :
978-1-4244-1463-5
DOI :
10.1109/RWS.2008.4463442
