Oscillators – Solid state active element oscillator – Transistors
Patent
1994-11-28
1997-02-18
Pascal, Robert
Oscillators
Solid state active element oscillator
Transistors
331186, 331108C, 331176, 331144, 331 25, 323907, 323313, 327538, 327539, 333181, H03L 714, H03K 3281
Patent
active
056044666
ABSTRACT:
An on-chip voltage controlled oscillator for use in an analog phase locked loop receives power from a voltage regulator which greatly reduces the noise seen by the voltage controlled oscillator. The voltage controlled oscillator has a DC bias section which supplies a relatively constant current to the multivibrator to assure a minimum operating frequency. A control signal is used to provide additional current which increases the speed of oscillation. The bias current reduces the transfer characteristics (MHz/volt) of the voltage controlled oscillator making it more immune to noise in the control signal.
REFERENCES:
patent: 3838564 (1974-10-01), Holcomb
patent: 3857110 (1974-12-01), Grebene
patent: 3983473 (1976-09-01), Sanderson
patent: 4015218 (1977-03-01), Sanderson
patent: 4055814 (1977-10-01), Abraham et al.
patent: 4080780 (1978-03-01), Williams et al.
patent: 4083019 (1978-04-01), Hamada et al.
patent: 4260945 (1981-04-01), Ahmed
patent: 4492914 (1985-01-01), Hitomi
patent: 4563660 (1986-01-01), McNeilly
patent: 4618837 (1986-10-01), Matsuura
patent: 4623852 (1986-11-01), Abou et al.
patent: 4663600 (1987-05-01), Rokos
patent: 4749961 (1988-06-01), Kato et al.
patent: 4751463 (1988-06-01), Higgs et al.
patent: 4812784 (1989-03-01), Chung et al.
patent: 4843348 (1989-06-01), Fenk
patent: 4878151 (1989-10-01), Gallichio
patent: 4916332 (1990-04-01), Gontowski
patent: 4918404 (1990-04-01), Vitiello et al.
patent: 5079497 (1992-01-01), Barbu et al.
Operational Amplifiers, Theory & Practice by J. K. Roberge, 1975, p. 521, fig. 12.20.
"Regulated Low Voltage Power Supply with Controllable Temperature Coefficient." by T. C. Verster, Rev. Sci. Instrum., vol. 44, No. 8 Aug. 1973 pp. 1127-1128.
Dreps Daniel M.
Rizzo Raymond P.
International Business Machines - Corporation
Kinkead Arnold
Pascal Robert
LandOfFree
On-chip 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 On-chip voltage controlled oscillator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On-chip voltage controlled oscillator will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1604772