Applications Of Surface Acoustic Wave (Saw) Chirp Filter-An Overview

Gordon W. Judd; Vaughn H. Estrick

doi:10.1117/12.959210

25 February 1981 Applications Of Surface Acoustic Wave (Saw) Chirp Filter-An Overview

Gordon W. Judd, Vaughn H. Estrick

Proceedings Volume 0239, Guided Wave Optical and Surface Acoustic Wave Devices: Systems and Applications; (1981) https://doi.org/10.1117/12.959210
Event: 24th Annual Technical Symposium, 1980, San Diego, United States

Abstract

The development of large time-bandwidth product surface acoustic wave (SAW) chirp filters is now a mature technology that is finding an ever broadening range of signal processing applications. By taking advantage of the ease with which these devices can be used to implement the chirp transform algorithm a number of SAW-based signal processors have evolved for realizing electronically variable delay lines, programmable matched filters, and spectral analysis subsystems. Recently the overlapping operating characteristics of SAW filters and high speed digital circuits have been utilized to produce efficient, broadband fast Fourier transform networks with diverse applications in radar and sonar signal processing systems. This paper reviews some of the current applications of SAW devices in analog chirp transform correlator and microscan receiver systems, and describes the improved processing speed that can result from using SAW devices in hybrid analog-digital processing systems. The effect of filter errors on the ultimate performance characteristics of different spectral analysis, and Fourier transform based processors is discussed and the projected capabilities of SAW-based processing systems is addressed.

Citation Download Citation

Gordon W. Judd and Vaughn H. Estrick "Applications Of Surface Acoustic Wave (Saw) Chirp Filter-An Overview", Proc. SPIE 0239, Guided Wave Optical and Surface Acoustic Wave Devices: Systems and Applications, (25 February 1981); https://doi.org/10.1117/12.959210

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