VIRTUAL BANDWIDTH DIGITAL RECEIVER CONVERSION SIGNAL PROCESSOR
Original Publication Date: 1997-Dec-01
Included in the Prior Art Database: 2002-Jun-13
Abstract-Due to advances in AID technology, direct digital IF conversion receivers are being used in place of more traditional superheterodyne receiver platforms. Direct conversion of analog IF signals to digital requires an oversampled bandpass A/D followed by digital signal processing (DSP) hard- ware. A significant limitation upon the use of over- sampled A/D technology is the limited bandwidth over which the desired S/N ratio is maintained. In this paper we describe a novel method that increases the usable frequency bands (bandwidth) over which an oversampled A/D based receiver achieves its theoretical maximum SIN measure.