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TTE suppressed surface acoustic wave filter

 

作者: Masahide Tsukamoto,  

 

期刊: Applied Physics Letters  (AIP Available online 1978)
卷期: Volume 33, issue 7  

页码: 559-560

 

ISSN:0003-6951

 

年代: 1978

 

DOI:10.1063/1.90463

 

出版商: AIP

 

数据来源: AIP

 

摘要:

A new design of SAW filters having an inclined and tapered three transducer (ITTT) configuration is effective for the suppression of the triple‐transit (TTE) caused by the regeneration of an surface acoustic wave. In the ITTT configuration, the electrode fingers of the transducers are not parallel with each other but are tapered, and further, each of the outer output transducers is inclined with respect to the central input transducer. A video i.f. filter for TV having the ITTT configuration was fabricated using a piezoelectric ceramic substrate. The filter exhibited an insertion loss of 9.6 dB and ripple in the group delay of less than 50 nsec.

 

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