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

Volume

8

Issue

1

fYear

1998

fDate

3/1/1998 12:00:00 AM

Firstpage

14

Lastpage

19

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;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.662689

Filename

662689