Oscillators – Solid state active element oscillator – Transistors
Patent
1988-05-31
1989-05-02
Mis, David
Oscillators
Solid state active element oscillator
Transistors
331108C, 331158, 331177V, H03B 536
Patent
active
048272264
ABSTRACT:
A fully integrated, adjustable oscillator circuit for use with a crystal is disclosed in which a crystal oscillator, such as a Pierce oscillator, is arranged to utilize a tuning network that includes at least one integrated varactor (voltage-variable-capacitor) as a shunt element for providing at least one type of adjustment of the oscillating signal. More than one type of adjustment can be provided by including a bank of varactors for each of the shunt elements of the tuning network, in which various individual varactors are selected in binary (on-off) fashion to effect digital as well as analog adjustment of the crystal oscillator.
REFERENCES:
patent: 3373379 (1986-03-01), Black
patent: 3729688 (1973-04-01), Cerny, Jr. et al.
patent: 3821665 (1974-06-01), Irwin et al.
patent: 3970996 (1976-07-01), Keller et al.
patent: 4378534 (1983-03-01), Goedken et al.
patent: 4587497 (1986-05-01), Keller et al.
patent: 4591807 (1986-05-01), Davis
patent: 4609884 (1986-09-01), Kindinger et al.
patent: 4658223 (1987-04-01), Marvin et al.
patent: 4710730 (1987-12-01), Doyle
patent: 4751475 (1988-06-01), Kubo et al.
Solid State Radio Engineering, Herbert L. Krauss, Charles W. Bostian, and Frederick H. Raab, 1980, pp. 146-159.
"A New Digital TCXO Circuit Using a Capacitor-Switch Array", I.E.E.E. reprint CH1957-0/83, pp. 434-435.
"Application of Floating MOS Variable Capacitor for the Watch IC", Y. Hattori, R. Matuszaki, K. Tanaka, A. Watanabe, Gallagher & Associates.
The Radio Amateur's Handbook, A.R.R.L., 1981, p. 8-13.
The Radio Amateur's Handbook, A.R.R.L., 1978, p. 139.
The Radio Amateur's VHF Manual, A.R.R.L., 1968, p. 99.
Mis David
Motorola Inc.
Wesoloski Ronald G.
LandOfFree
Fully integrated, adjustable oscillator for use with a crystal does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Fully integrated, adjustable oscillator for use with a crystal, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fully integrated, adjustable oscillator for use with a crystal will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-587985