Oscillator circuit with two switchable oscillators

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United States of America Patent

PATENT NO 9692354
APP PUB NO 20160308491A1
SERIAL NO

15101646

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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An oscillator circuit comprises a first, high-Q crystal oscillator and a second, low-Q oscillator arranged for kick-starting the crystal oscillator at switch-on by coupling the second oscillator to the first oscillator for a time period. The oscillator circuit is arranged to select the frequency of the second oscillator by placing the second oscillator in a phase locked loop with the first oscillator providing a reference frequency, and adjusting the frequency of the second oscillator towards the frequency of the first oscillator.

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Patent Owner(s)

  • TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Elgaard, Christian Lund, SE 28 31

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