Title:
METHOD AND CIRCUIT FOR TEMPERATURE-DEPENDING REDUCTION OF OSCILLATION PARAMETERS OF OSCILLATOR
Document Type and Number:
Japanese Patent JPH01212005
Kind Code:
A
Abstract:
PURPOSE: To substantially improve the total temperature stability of an LC oscillation circuit by distributing a positive feedback path to two partial paths which are a 1st partial path with temperature dependence and a 2nd temperature-nondependent partial path capable of compensating temperature nondependent constant loss. CONSTITUTION: The positive feedback path includes the coupled partial paths K1 and K2 , and the partial path K1 compensates the loss of a 1st group by a temperature compensating method. In this case, energy for compensating the temperature-nondependent loss (2nd group) is coupled through the partial path K2 without temperature dependency. Namely, energy for the loss of a temperature coefficient which should be formed by superposition is coupled through the partial paths K1 and K2 according to a proper distribution. In case of a dielectric proximity switch, variable loss in a driving blade represented by a resistance Rm is compensated through variation of coupling by the coupled partial path K2 (Rm belongs to the 2nd group).
Inventors:
PEETAA HAIMURITSUHERU
Application Number:
JP30387488A
Publication Date:
August 25, 1989
Filing Date:
November 30, 1988
Export Citation:
Assignee:
PEETAA HAIMURITSUHERU
International Classes:
H03K17/95; H03K17/96; H03L1/02; H03B5/04; (IPC1-7): H03B5/04; H03K17/96
Attorney, Agent or Firm:
Akira Asamura (2 outside)
Previous Patent: OPTICALY CONTROLLED PHASED ARRAY ANTENNA
Next Patent: DIGITAL TEMPERATURE COMPENSATED CRYSTAL OSCILLATOR
Next Patent: DIGITAL TEMPERATURE COMPENSATED CRYSTAL OSCILLATOR