Differential voltage controlled oscillator using...

Details Differential voltage controlled oscillator using... Differential voltage controlled oscillator using...

2007-12-04

2007-12-04

Pascal, Robert (Department: 2817)

Oscillators

Solid state active element oscillator

Transistors

C331S1170FE, C331S17700V

Reexamination Certificate

active

11142434

ABSTRACT:
A differential voltage controlled oscillator comprises first and second transistors having opposite magnitudes and directions of currents flowing to a third electrode from a second electrode corresponding to a voltage between first and second electrodes; and a resonance circuit coupled to the second electrodes of the first and second transistors and controlling a frequency of an oscillation signal corresponding to a control voltage. The second electrode of the first transistor is coupled to the first electrode of the second transistor to form a first output terminal, the first electrode of the first transistor is coupled to the second electrode of the second transistor to form a second output terminal, and the third electrodes of the first and second transistors are coupled to first and second powers.

REFERENCES:
patent: 6509805 (2003-01-01), Ochiai
patent: 6650195 (2003-11-01), Brunn et al.
patent: 6690244 (2004-02-01), Mernyei et al.
patent: 6970048 (2005-11-01), Devnath et al.
patent: 7015768 (2006-03-01), Talwalkar
patent: 7034626 (2006-04-01), Akeyama et al.
patent: 7057469 (2006-06-01), Prentice

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