IMPROVEMENTS RELATING TO TIME-INTERLEAVED SAMPLERS
摘要
This invention relates to a method of calibrating a time-interleaved analogue-to-digital sampler (10) and to a method of performing analogue-to-digital conversion with a sampler (10) so calibrated. The invention provides a method of calibrating a sampler (10) comprising N time-interleaved ADCs (12a-d), the method comprising the steps of: (a) injecting in turn N calibration signals (13) into the sampler such that each calibration signal (13) occupies one of N related frequencies; (b) determining the input signal for each one of the N calibration frequencies (13); (c) measuring in the frequency domain the output at each of the N related frequencies for each one of the N calibration frequencies; and (d) determining the relationship that relates the input signal to the output at each of the N related frequencies for each one of the N calibration frequencies.
申请公布号
WO2004004130(A2)
申请公布日期
2004.01.08
申请号
WO2003GB02681
申请日期
2003.06.24
申请人
BAE SYSTEMS PLC;WOOD, JOHN, MICHAEL;COOTE, NIGEL, CHARLES, TRUEMAN