Amplifier circuit for an oscillator in a defined oscillating...

Details Amplifier circuit for an oscillator in a defined oscillating... Amplifier circuit for an oscillator in a defined oscillating...

2007-11-20

2007-11-20

Mis, David (Department: 2817)

Oscillators

Solid state active element oscillator

Significant distributed parameter resonator

C331S17700V

Reexamination Certificate

active

11361042

ABSTRACT:
An amplifier circuit for an oscillator in a defined oscillating frequency range includes a plurality of transconductors, wherein at least one transconductor has a positive transconductance, and wherein at least one other transconductor has a negative transconductance, wherein the transconductors together provide a positive amplification, and a passive impedance element coupled to at least one fed back transconductor, wherein the transconductance of the transconductor and the impedance element are dimensioned so that, in the oscillating frequency range, a given phase difference is present between a signal at the input and a signal at the output.

REFERENCES:
patent: 4947141 (1990-08-01), Atkinson et al.
patent: 6137370 (2000-10-01), Yamamoto
patent: 103 08 975 (2004-02-01), None
patent: 699 11 281 (2004-06-01), None
Brederlow et al., “Biochemical Sensors Based on Bulk Acoustic Wave Resonators,” Infineon Technologies, Munich, pp. 1-3, (3 pages).

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