Piezoelectric resonator having specific lead line arrangements a

Details Piezoelectric resonator having specific lead line arrangements a Piezoelectric resonator having specific lead line arrangements a

1998-05-12

1999-04-27

Lee, Benny

Wave transmission lines and networks

Coupling networks

Electromechanical filter

310366, 310357, 310333, 29 2535, H03H 9205, H03H 956

Patent

active

058983481

ABSTRACT:
A piezoelectric resonator having excellent filter characteristics and effectively suppressing unnecessary ripples and/or spurious components includes first and second excitation electrodes disposed on a first major surface of a piezoelectric substrate, a first common electrode on a second major surface so as to oppose the first and second excitation electrodes with the substrate being located therebetween, and two lead lines extending along portions of longitudinal edges of the piezoelectric substrate. An excitation-lead line is connected to the first and second excitation electrodes which partly overlap a ground-terminal electrode provided on the lower surface with the piezoelectric substrate located therebetween.

REFERENCES:
patent: 5350965 (1994-09-01), Noto et al.
patent: 5446429 (1995-08-01), Tanaka
patent: 5608362 (1997-03-01), Nishimura et al.
patent: 5815053 (1998-09-01), Futakuchi

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