Group single-phase unidirectional transducers with 3/8.lambda.and 5/8.lambda. sampling
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United States of America Patent
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Dec 17, 1991
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N/A
app pub date -
Nov 2, 1990
filing date -
Nov 2, 1990
priority date (Note) -
Expired
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Abstract
Novel GSPUDT structures are disclosed with 3/8.lambda. and 5/8.lambda. group sampling with 3.lambda. and 5.lambda. group responses. Reflectionless or unidirectional transducers, and broadband notch elements are all implementable with these new configurations. These GSPUDTs are similar to the conventional SPUDT and the 'Hopscotch' transducers in that single level versions are reflectionless. Unidirectional characteristics are only obtainable from a two-level structure.
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