Electromechanical filter

Details Electromechanical filter Electromechanical filter

2005-06-02

2008-10-21

Takaoka, Dean O (Department: 2817)

Wave transmission lines and networks

Coupling networks

Electromechanical filter

C333S197000, C333S222000, C977S724000, C977S932000

Reexamination Certificate

active

07439823

ABSTRACT:
An object is to provide an electromechanical filter which can define a vibration mode so that a vibrator can be excited only in a desired vibration mode, that is, a filter which can suppress any vibration mode other than a desired vibration mode. The electromechanical filter includes a first member for inputting a signal, a second member disposed at a predetermined distance from the first member so as to surround the first member and to be excited due to an electrostatic force caused by the signal input from the first member, and a third member disposed at a predetermined distance from the second member so as to surround the second member and to detect vibration of the second member. The second member is designed to receive an attractive force from the first member and the third member so as to be bound and regulated as to a vibration direction.

REFERENCES:
patent: 5172085 (1992-12-01), Glenat et al.
patent: 6894586 (2005-05-01), Bircumshaw et al.
patent: 7263392 (2007-08-01), Akasegawa et al.
Bannon III et al., “High-Q HF Microelectromechanical Filters”, IEEE Journal of Solid-State Circuits, vol. 35. No. 4, Apr. 2000.
Zheng et al., “Multiwalled Carbon Nanotubes as Gigahertz Oscillators”, Physical Review Letters, vol. 88, No. 4, The American Physical Society, Jan. 28, 2002.

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