A SAW/CCD accumulating correlator

15 May 1979

journal article
research article
Published by AIP Publishing in Applied Physics Letters

Vol. 34 (10) , 620-622
https://doi.org/10.1063/1.90638

Abstract

A new analog‐signal‐processing device is reported in which a charge‐coupled device (CCD) is coupled to a piezoelectric surface acoustic wave (SAW) delay line across a 300‐nm gap. The CCD samples multiply, accumulate, and read out the cross‐correlation function of two wide‐band SAW input signals which counterpropagate on the delay line. A signal‐processing gain of 30 dB at a bandwidth of 20 MHz has been observed by correlating biphase modulated pseudonoise waveforms of 100‐μs duration in the presence of Gaussian noise. This compact hybrid structure provides 300 discrete samples of a 7‐μs segment of the correlation function.

Keywords

This publication has 2 references indexed in Scilit:

An acoustic SAW/CCD buffer memory device
Applied Physics Letters, 1978
Surface acoustic wave tapped correlator using time integration
Applied Physics Letters, 1975