MULTI-CARRIER BASE STATION RECEIVER

摘要

Embodiments of the present invention may provide a receiver. The receiver may include an RF section, a local oscillation signal generator to generate quadrature local oscillation signals, and a quadrature mixture, coupled to the RF section, to downconvert a first group of wireless signals directly to baseband frequency quadrature signals and to downconvert a second group of wireless signals to intermediate frequency quadrature signals. The receiver may also include a pair of analog-to-digital converters (ADCs) to convert the downconverted quadrature signals to corresponding digital quadrature signals. Further, the receiver may include a digital section having two paths to perform signal processing on the digital baseband frequency quadrature signals and to downconvert the digital intermediate frequency signals to baseband cancelling a third order harmonic distortion therein. Moreover, the receiver may include a phase corrector to adjust a phase of one of the local oscillation signals to balance the third order harmonic distortion and a gain offset generator to adjust a gain of one of the downconverted signals to balance the third order harmonic distortion.

主权项

1. A receiver, comprising:
an RF section; a local oscillation signal generator to generate in-phase and quadrature local oscillation signals; a quadrature mixture, coupled to the RF section and to the local oscillation signal generator, to downconvert a first group of wireless signals directly to baseband frequency quadrature signals and to downconvert a second group of wireless signals to intermediate frequency quadrature signals; a pair of analog-to-digital converters (ADCs) to convert the downconverted quadrature signals to corresponding digital quadrature signals; a digital section having two paths to perform signal processing on the digital baseband frequency quadrature signals and to downconvert the digital intermediate frequency signals to baseband cancelling a third order harmonic distortion therein, a phase corrector to adjust a phase of one of the local oscillation signals to balance the third order harmonic distortions; and a gain offset generator to adjust a gain of one of the downconverted signals to balance the third order harmonic distortions.