Oscillator circuit arrangement with an automation feedback...

Details Oscillator circuit arrangement with an automation feedback... Oscillator circuit arrangement with an automation feedback...

2007-09-04

2007-09-04

Kinkead, Arnold (Department: 2817)

Oscillators

Solid state active element oscillator

Transistors

C331S167000, C331S175000, C331S185000, C331S186000

Reexamination Certificate

active

11049379

ABSTRACT:
A circuit arrangement for generating oscillations with a defined frequency includes an oscillator circuit (30, 32) for generating the oscillations and a dedamping circuit (18, 20) connected to the oscillator circuit for compensating any damping of the oscillator circuit. The dedamping or damping compensation by the dedamping circuit is accomplished with the aid of a rectifier circuit (60, 62). The dedamping circuit is a bridge circuit of CMOS field effect transistors (22, 24; 26, 28) which are controlled in their operation in closed loop fashion by respective rectifier circuit branches which are in turn connected to the oscillator circuit to provide a proportional closed loop control of the damping compensation.

REFERENCES:
patent: 6225871 (2001-05-01), Chien
patent: 199 12 704 (2000-10-01), None
Niklas Troedsson et al., “High Performance 1V 2.4GHz CMOS VCO”, 0-7803-7363-402; 2002, IEEE, pp. 185 to 188.

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