Direct input radio frequency complex analog to digital converter with corrective factors

作者: Byron W. Tietjen , Lindsay C. Peterson , Michael J. Walsh

DOI:

关键词: Filter (signal processing)Successive approximation ADCBand-pass filterAnalog-to-digital converterElectronic engineeringHarmonicBasebandFilter designIntermediate frequencyEngineering

摘要: A direct radio frequency complex analog to digital converter (CADC) device provides corrective factors including a plurality of time-interleaved low speed ADCs, wherein each ADC corresponds an channel. phase factor is calculated for An amplitude The and are applied bandpass filter coefficients produce corrected the imbalances between ADCs. Digital output channel filtered by using in-phase quadrature at baseband. Harmonics produced ADCs canceled filtering outputs in first intermediate such that harmonics fall outside band interest, second attenuate harmonic signal