2D Matched Filtering with Time-Stretching; Application to Orthogonal Matching Pursuit (OMP)

This paper presents a matched filter which incorporates the time stretching of signals returned from moving targets. This 2D matched filter does not suffer from SNR and resolution degradation due to range migration, and can be used with agile waveforms. The use of this matched filter within the orthogonal matching pursuit (OMP) algorithm, to...

Analysis of the signal transfer and folding in N-path filters with a series inductance

N-path filters exploiting switched-series-R-C networks can realize high-Q blocking-tolerant band-pass filters. Moreover, their center frequency is flexibly programmable by a digital clock. Unfortunately, the time variant nature of these circuits also results in unwanted signal folding. This paper proves analytically that folding can be reduced...