Title:
VOLTAGE CONTROL OSCILLATOR
Document Type and Number:
Japanese Patent JPS63116512
Kind Code:
A
Abstract:
A voltage controlled oscillator is formed of a plurality of cascaded inverter stages in a ring configuration. Each inverter stage is a grounded emitter circuit having an active pull-stage in order to achieve a short stage delay. The frequency of the ring oscillator is determined by the number of inverter stages, and the gain is selectable by coupling an external control voltage to only certain of the inverters. The VCO may be fabricated on a single integrated circuit along with the other circuits necessary to form a phase locked loop or other frequency generation system.
Inventors:
JIYON FUARII YUUN
JIYOSEFU MITSUCHIERU MOSUREI
JIYOSEFU MITSUCHIERU MOSUREI
Application Number:
JP17927087A
Publication Date:
May 20, 1988
Filing Date:
July 20, 1987
Export Citation:
Assignee:
IBM
International Classes:
H03K3/03; H03K3/282; H03L7/099; H03K19/082; (IPC1-7): H03K3/03; H03K19/082; H03L7/08
Domestic Patent References:
| JPS5391649A | 1978-08-11 | |||
| JPS57112134A | 1982-07-13 |
Attorney, Agent or Firm:
Kiyoshi Goda (4 outside)