Title:
TEMPERATURE-COMPENSATED OSCILLATOR, CONTROL METHOD FOR THE SAME AND RADIO COMMUNICATIONS EQUIPMENT
Document Type and Number:
Japanese Patent JP3358619
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a temperature-compensated oscillator, a control method for the same and radio communications equipment, with which phase noise of an output signal can be reduced, frequency of the output signal is stabilized in a short time and responsivity of control is also not poor.
SOLUTION: This device is provided with a filter means 23 for removing noise contained in a temperature-compensating voltage Vc1, a switch means SW1 parallel connected to this filter means 23 and a power control means 26 for controlling the supply of power to a voltage-controlled oscillation circuit 28 or the like, and when starting the supply of power to the voltage-controlled oscillation circuit 28, the power control means 26 turns on the switch means SW1 for a prescribed period.
More Like This:
Inventors:
Manabu Oka
Application Number:
JP2000239003A
Publication Date:
December 24, 2002
Filing Date:
August 07, 2000
Export Citation:
Assignee:
Seiko Epson Corporation
International Classes:
H03B5/32; H03B5/04; H03L1/02; H04B1/3822; H04B1/40; (IPC1-7): H03B5/32; H03B5/04; H03L1/02; H04B1/40
Domestic Patent References:
| JP11251836A | ||||
| JP8288741A | ||||
| JP7336142A | ||||
| JP661846A | ||||
| JP6238605A | ||||
| JP63245104A |
Attorney, Agent or Firm:
川▲崎▼ 研二