A Multi-Channel Quadrature Bandpass Sampling Receiver

Traditional multi-channel sonar receivers require costly replication of analogue hardware before digitisation and processing of the signals. This paper describes the design process and architecture used to develop a multi-channel bandpass sampling receiver capable of directly and sequentially sampling each channel signal in quadrature such that the overall sampling rate remains uniform. The capability of the traditional multi-channel systems is retained while hardware complexity and cost are dramatically reduced.