Reduction of Six-Port Calibration to Linear Equalization

The six-port receiver concept offers new possibilities on the way toward multi-band/multi-mode low cost receiver frontends for high frequencies up to the nun-wave range. The expense for the reduced effort on the analog side is claimed as higher complexity on digital side. Especially, the synchronization of the receiver by considering the necessary calibration leads to a significantly higher computational load. This paper presents a new way to reduce the calibration to a linear equalization, which allows applying standard well known baseband architectures, used in conventional receiver designs. Herein, the six-port effects are processed in conjunction with the channel equalization.