Correction factor for low-loss 180 degrees reflecting linear chirp arrays in SAW devices.
Low-loss, 180 degrees -reflecting linear chirps with constant or slowly varying weighting and large time-bandwidth product are analyzed. Multiple reflections are fully taken into account, giving a universal correction factor as a function of array parameters. This should enable such chirps to be designed without making iterations. Surface acoustic-wave (SAW) device layouts making use of the 180 degrees arrays are suggested.
Huang
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Dept. of Eng. Sci., Oxford Univ.