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US 2016/0112051 A1Published application
Oscillator, electronic device and moving object
AssigneeSeiko Epson Corporation
InventorsKensaku Isohata, Atsushi Kiyohara
Life of this patent
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Abstract
An oscillator includes an oscillation element; an oscillation circuit which causes the oscillation element to oscillate; a heat generation element which heats the oscillation element; a temperature control circuit which controls the heat generation element; and a temperature correction circuit which corrects frequency-temperature characteristics of an output signal of the oscillation circuit.
Claims15
An oscillator comprising:
- an oscillation element;
- an oscillation circuit which causes the oscillation element to oscillate;
- a heat generation element which heats the oscillation element;
- a temperature control circuit which controls the heat generation element;
- and
- a temperature correction circuit which generates a temperature correction voltage for correcting frequency-temperature characteristics of an output signal of the oscillation circuit,
- the temperature correction circuit comprising:
- a primary correction circuit which corrects a primary component of the frequency-temperature characteristics of the output signal of the oscillation circuit, the primary correction circuit generating a primary correction voltage, and
- a secondary correction circuit which corrects a secondary component of the frequency-temperature characteristics of the output signal of the oscillation circuit, the secondary correction circuit generating a secondary correction voltage,
- the temperature correction voltage being a sum of the primary correction voltage and the secondary correction voltage.
7 more elements
Dependencies are inferred from the claim text.