A Digital Down Converter for a Wideband Radar Receiver
نویسندگان
چکیده
In a conventional radar receiver errors are introduced due to mismatch between the ADCs and gain and phase mismatch in the I/Q demodulation. By performing the I/Q demodulation in the digital domain some of these errors are alleviated. In this paper several different filter structures suitable for digital I/Q demodulation are evaluated. Three different structures for such a digital down converter has been considered and their implementation properties has been examined. A solution combining an FIR filter with a wave digital filter is found to be the most efficient solution.
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تاریخ انتشار 2001