Extendible-range voltage controlled oscillator

Details Extendible-range voltage controlled oscillator Extendible-range voltage controlled oscillator

1994-06-23

1995-12-19

Pascal, Robert J.

Oscillators

With frequency adjusting means

With voltage sensitive capacitor

331 57, 331107R, H03B 500

Patent

active

054771986

ABSTRACT:
A circuit design extending the range and linearizing the transfer characteristic of a fast voltage controlled oscillator (VCO). In addition, a multi-range VCO is described. Range extension is achieved by modifying the delay cell of a current controlled ring oscillator. The VCO transfer characteristic is linearized by piece-wise linear current control added to the delay cell. Additionally, a VCO capable of multi-range operation is provided. With the addition of multiple current sources which control booster inverter current, and by selectively enabling the additional current sources, a VCO with multiple frequency ranges can be achieved.

REFERENCES:
patent: 3546617 (1970-12-01), Westwood
patent: 4388596 (1983-06-01), Yamashita
patent: 4568888 (1986-02-01), Kimura et al.
patent: 4853654 (1989-08-01), Sakurai
patent: 4879530 (1989-11-01), Wilhelm et al.
patent: 4890072 (1989-12-01), Espe et al.
patent: 4918404 (1990-04-01), Vitiello et al.
patent: 4935706 (1990-06-01), Schenberg
patent: 4975662 (1990-12-01), Takeuchi
patent: 4988955 (1991-01-01), Horie
patent: 5028888 (1991-07-01), Ray
patent: 5070311 (1991-12-01), Nicolai
patent: 5081429 (1992-01-01), Atriss et al.
patent: 5105169 (1992-04-01), Yamazaki et al.
patent: 5121086 (1992-06-01), Srivastava
patent: 5136260 (1992-08-01), Yousefi-Elezei
patent: 5142249 (1992-08-01), Hirotomi
patent: 5198784 (1993-03-01), Fenk
patent: 5208557 (1993-05-01), Kersh, III
patent: 5250913 (1993-10-01), Gleichert et al.
patent: 5278522 (1994-01-01), Atriss et al.
patent: 5285173 (1994-02-01), Reynolds
patent: 5300898 (1994-04-01), Chen et al.
patent: 5302920 (1994-04-01), Bitting
patent: 5331295 (1994-07-01), Jelinek et al.
Kurt M. Ware et al.; A 200-MHz CMOS Phase-Locked Loop with Dual Phase Detectors; Dec., 1989; pp. 1560-1568.
Deog-Kyoon Jeong et al.; Design of PLL-Based Clock Generation; Apr., 1987; pp. 255-261.

Affiliated with

Also associated with

Rating

Extendible-range voltage controlled oscillator does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Extendible-range voltage controlled oscillator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Extendible-range voltage controlled oscillator will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-994390