SUBSAMPLING RECEIVER USING INTER-STAGE OFF-CHIP RF FILTER

摘要

PURPOSE: A subsampling receiver using an inter-block RF off-chip filter is provided to digitally process noise signals adjacent to a desired signal. CONSTITUTION: An RF front end part (400) attenuates noise and an interference signal except for a band signal by filtering an amplified signal with a band pass filter again. An analog-digital converter (510) converts an analog signal outputted from the RF front end part into a digital signal in a DC frequency band or an intermediate frequency band. A signal processor (520) digitally pre-processes the digital signal outputted from the analog-digital converter and demodulates the digital signal. A detection and adjustment unit (550) detects a mismatch between channel data of the digital signal outputted from the signal processor and adjusts the phases of clock signals.