Saw resonator bandpass filter with asymetric apodized transducer

Details Saw resonator bandpass filter with asymetric apodized transducer Saw resonator bandpass filter with asymetric apodized transducer

1994-05-19

1996-10-01

Lee, Benny

Wave transmission lines and networks

Coupling networks

Electromechanical filter

310313C, 333196, H03H 964, H03H 925

Patent

active

055614086

ABSTRACT:
In order to effectively suppress a spurious response appearing at a lower side of a passband of a two-pole type bandpass filter, an overlapped electrode portion of each of interdigital transducers is configured so as to reduce an influence of one standing wave resulting one of three longitudinal resonance modes.

REFERENCES:
patent: 3633132 (1972-01-01), Hartemann
patent: 4703290 (1987-10-01), Zibis et al.
Haydl et al., "Multimode SAW Resonators--A Method to Study the Optimum Resonator Design," Ultrasonics Symposium Proceedings, 1976. pp. 287-296.

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