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
Reference:
De Witt, JJ and Van Rooyen, GJ. 2008. Self-calibrating quadrature mixing front-end for SDR. IEEE Radio and Wireless Symposium (RWS 2008). Orlando, Florida, USA. 22-24 January 2008, pp 4
De Witt, J., & Van Rooyen, G. (2008). Self-calibrating quadrature mixing front-end for SDR. IEEE. http://hdl.handle.net/10204/2007
De Witt, JJ, and GJ Van Rooyen. "Self-calibrating quadrature mixing front-end for SDR." (2008): http://hdl.handle.net/10204/2007
De Witt J, Van Rooyen G, Self-calibrating quadrature mixing front-end for SDR; IEEE; 2008. http://hdl.handle.net/10204/2007 .
