Differential oscillator circuit

Details Differential oscillator circuit Differential oscillator circuit

2007-02-06

2007-02-06

Kinkead, Arnold (Department: 2817)

Oscillators

L-c type oscillators

C331S1170FE, C331S1170FE, C331S17700V

Reexamination Certificate

active

11029019

ABSTRACT:
In a configuration wherein an output signal from a differential oscillator is input into a differential buffer amplifier, an operating current for the differential oscillator including a resonator, which has a node at the midpoint of an inductor, and a pair of field-effect transistors for oscillation and an operating current for the differential buffer amplifier including a pair of bipolar transistors for amplification are made common. In order to obtain the common operating current, the current from the pair of bipolar transistors for amplification is fed from the midpoint of the inductor into the pair of field-effect transistors for oscillation.

REFERENCES:
patent: 6690244 (2004-02-01), Mernyei et al.
R Aparico, et al.; “A Noise-Shifting Differential Colpitts VCO,” IEEE Journal of Solid-State Circuits, vol. 37, No. 12, Dec. 2002, pp. 1728-1736.

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