A quadrature charge-domain filter with frequency down-conversion and filtering for RF receivers

Abstract

A quadrature charge-domain filter (QCDF) for frequency down-conversion and filtering is proposed. After measurement of QCDF by a 1072-MS/s sampling rate, a stop-band attenuation and bandwidth were 53-dB and 44-MHz, respectively. For quadrature performance after down-conversion, this QCDF provided −27.67-dB EVM upon a 64-QAM signal with 54-Mb/s. This chip… (More)

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