Wave transmission lines and networks – Coupling networks – Electromechanical filter
Patent
1995-06-07
1997-07-01
Lee, Benny
Wave transmission lines and networks
Coupling networks
Electromechanical filter
333200, 310370, H03H 921
Patent
active
056442734
ABSTRACT:
Disclosed is a piezoelectric resonator device. This piezoelectric resonator device comprises a piezoelectric substrate having an almost rectangular plane shape. The piezoelectric substrate is provided with a slit extending to the inside from one edge of the piezoelectric substrate, for forming a tuning fork portion, and a pair of slits for separating the tuning fork portion, spaced apart from the slit forming the tuning fork portion by a predetermined distance on both sides of the slit forming the tuning fork portion, and approximately parallel with the slit forming the tuning fork portion. Vibrating electrodes are formed on both major surfaces of the piezoelectric substrate at a piezoelectric vibrating portion, between the slits separating the tuning fork portion from non-vibrating portions of the substrate.
REFERENCES:
patent: 5159301 (1992-10-01), Kaida et al.
Fujimoto Katsumi
Inoue Jiro
Kaida Hiroaki
Kajiwara Masatoshi
Nakatani Hiroshi
Lee Benny
Murata Manufacturing Co. Ltd.
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