発振器

Japanese Patent JP5086479

B2

A MEMS oscillator including: an oscillator unit being capable of outputting an output from an amplifier as an original oscillator signal that includes a feedback type oscillator circuit including a MEMS resonator and an amplifier, and an automatic gain controller receiving the output from the amplifier and controlling a gain of the amplifier based on a level of the output to maintain a level of the output from the amplifier constant; and a corrector unit that receives the original oscillator signal, that generates from the original oscillator signal a signal of a predetermined set frequency, and that outputs the generated signal of the predetermined set frequency as an output signal. The corrector unit receives, separately from the original oscillator signal, an information signal that includes a signal having a correspondence relationship between a gain at a resonance frequency of the MEMS resonator from the oscillator unit, corrects a frequency of the original oscillator signal based on the information signal to generate the signal of the predetermined set frequency, and outputs the generated signal of the predetermined set frequency as the output signal.

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JP4214863	Piezoelectric oscillator circuit

Takehiko Yamakawa
Kunihiko Nakamura
Keiji Onishi

JP2011544742A

November 28, 2012

March 03, 2011

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Panasonic Corporation

H03B5/30; H03B5/02; H03B5/04; H03L1/02

JP2001014057A	2001-01-19
JPH06276088A	1994-09-30
JP2008278543A	2008-11-13
JP2007208584A	2007-08-16
JP2009200888A	2009-09-03
JP2009194613A	2009-08-27

Mitsuo Tanaka
Samejima Mutsumi
Kawabata Junichi

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