Patent ID: 9692393
Date: 2017-06-27
CPC Classifications: H03J,H04B

Claim:
1. A radio communication receiver apparatus configured to process multiple radio frequency bands in a telecommunication system, the radio communication receiver apparatus comprising: a plurality of digital receiver chains, wherein each digital receiver chain comprises: a calibration stage comprising a calibration transmitter and a calibration receiver, wherein the calibration stage is configured during a calibration mode of operation to transmit a calibration signal to an input of the radio communication receiver apparatus, and configured to detect a phase, amplitude, and delay of the calibration signal after being converted to a digital baseband signal in each digital receiver chain, the detected signal from each digital receiver chain providing a set of feedback signals for use by the calibration stage to define a set of correction parameters, wherein the set of correction parameters are used by the digital processing circuit to adjust one or more of the phase, amplitude, and delay of the digital baseband signal in one or more of the digital receiver chains, wherein the calibration transmitter couples the calibration signal to the input of the radio communication receiver apparatus and the calibration receiver receives the set of feedback signals from each digital receiver chain, and wherein the calibration receiver is configured to compare the phase, amplitude, and delay of each of the set of feedback signals, and determine the set of correction parameters based on the comparison; and a radio frequency (RF) analogue to digital converter coupled to receive an analogue signal comprising the multiple radio frequency bands, and configured to output the combined digital representation of the multiple radio frequency bands to each digital receiver chain, wherein the RF analogue to digital converter has a high spurious free dynamic range thereby eliminating a need for linearization in the radio communication receiver apparatus.