Oscillator based on piezoresistive resonators

Details Oscillator based on piezoresistive resonators Oscillator based on piezoresistive resonators

2011-03-01

2011-03-01

Benson, Walter (Department: 2837)

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

C310S311000, C310S318000

Reexamination Certificate

active

07898148

ABSTRACT:
An oscillator circuit is described comprising a piezoresistive resonator and a phase changing devices. Oscillator circuits with piezoresistive resonators do have the advantage that they can perform self-sustaining oscillation without additional active devices as e.g. transistors since they can be used as amplifiers. Phase changing devices as capacitors, coils and further piezoresistive resonator are used in order to compensate the π/2 phase shift of the piezoresistive resonator.

REFERENCES:
patent: 4967138 (1990-10-01), Obergfell et al.
patent: 6208534 (2001-03-01), Shteynberg et al.
patent: 6680603 (2004-01-01), Klaus-Manfred
patent: 2005/0257616 (2005-11-01), Kozlov et al.
patent: 2008/0231385 (2008-09-01), Van Beek
patent: 1207521 (1970-10-01), None
patent: WO2004053431 (2004-06-01), None

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