Fine Adjustment of Wide-Bandwidth SAW Filter Responses

Isamu KOTAKA  Jiro TEMMYO  Takahiro INAMURA  Shokichiro YOSHIKAWA  

IEICE TRANSACTIONS (1976-1990)   Vol.E63   No.2   pp.112-113
Publication Date: 1980/02/25
Online ISSN: 
Print ISSN: 0000-0000
Type of Manuscript: LETTER
Category: Other Devices

Full Text: PDF(204.2KB)>>
Buy this Article

Fine adjustment of wide-bandwidth SAW filter responses by trimming the interdigital transducer finger lengths was successfully achieved. In SAW devices, second-order effects, such as end effects, diffraction and bulk mode generation, disturb the simple design performances. The slight difference in wide-bandwidth frequency responses between the theoretical and experimental responses was modified by trimming the IDT finger lengths by hand.