Posibilities and Limitations of SAW Signal Processing Devices : SAW Hadamard Transformer

Abstract

SAW transversal filters are very interesting devices in signal processing. We shall check the limitations of a class of such devices: SAW tapped delay lines and give solutions when possible to avoid or compensate for those limitations. Fran this we shall see the possible solutions for performuing linear transformations using SAW devices and give the results obtained with SAW Hadamard transformers, Hadarnard transform being of great interest in picture transmission.