Title :
All-digital 1-bit RSFQ autocorrelator for radioastronomy applications: design and experimental results
Author :
Rylyakov, A.V. ; Polonsky, S.V.
Author_Institution :
Dept. of Phys., State Univ. of New York, Stony Brook, NY, USA
fDate :
3/1/1998 12:00:00 AM
Abstract :
We present the design of a rapid single-flux-quantum all-digital 1-bit autocorrelator for submillimeter spectrometry applications, featuring 4-GHz input signal bandwidth, double oversampling quantizer, and 16-Mb/s-per-channel output rate. The correlator consists of a digital delay line with multiplication and an array of accumulators with parallel readout. We report experimental results for a three-stage delay line (294 Josephson junctions) and a 4/spl times/4 array of accumulators (288 Josephson junctions) fabricated in HYPRES´ standard 3.5-/spl mu/m 1000-A/cm/sup 2/ Nb-trilayer process.
Keywords :
Josephson effect; correlators; delay lines; niobium; radioastronomy; submillimetre astronomy; superconducting junction devices; superconducting logic circuits; 16 Mbit/s; 3.5 micron; HYPRES; Josephson junctions; Nb; RSFQ autocorrelator; accumulators; digital delay line; double oversampling quantizer; output rate; parallel readout; radioastronomy applications; rapid single-flux-quantum device; submillimeter spectrometry; three-stage delay line; Autocorrelation; Bandwidth; Correlators; Delay lines; Hardware; Josephson junctions; Signal design; Signal processing; Space technology; Spectroscopy;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
