Patent ID: 8611466
Filing Date: 2013-12-17
Classification: H04L

Abstract:
1. A discrete time receiver, comprising: a radio frequency (RF) front end configured to convert a single signal into differential signals and amplify the differential signals; an operational transconductance amplifier (OTA) configured to receive a voltage signal output from the RF front end, convert the voltage signal into a current signal, and vary a gain to extend a dynamic range; a mixer configured to receive an output signal of the OTA and frequency-convert the received signal into a baseband signal; a discrete time filter configured to receive an output signal of the mixer and control a decimation ratio based on a sampling clock; an analog-to-digital converter (ADC) configured to receive an output signal of the discrete time filter and convert the received output signal into a digital signal; a clock interface block configured to provide the mixer, the discrete time filter, and the ADC with clocks, respectively; and a clock synchronization circuit coupled to and disposed between the ADC and the clock interface block and configured to synchronize a clock input to the ADC, which is output from the clock interface block, with the output signal of the discrete time filter.