Acoustic-wave device with active calibration mechanism

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United States of America Patent

PATENT NO 10326192
APP PUB NO 20170272056A1
SERIAL NO

15456665

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Abstract

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An acoustic-wave device with active calibration mechanism is provided. The acoustic-wave device with active calibration mechanism includes at least one acoustic-wave duplexer, a voltage-controlled oscillator (VCO), a frequency discriminator and a control circuit. The acoustic-wave duplexer includes a TX filter and an RX filter. The voltage-controlled oscillator includes a calibration resonator and a tunable negative impedance circuit. The TX filter, the RX filter and the calibration resonator are disposed on the same piezoelectric substrate. The frequency discriminator generates a calibration signal according to a frequency deviation of the calibration resonator. The control circuit is connected to the acoustic-wave duplexer and the frequency discriminator. The control circuit adjusts an operating frequency of the TX filter or an operating frequency of the RX filter according to the calibration signal.

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Patent Owner(s)

Patent OwnerAddress
AIROHA TECHNOLOGY CORPHSINCHU CITY

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Lin, Heng-Chih Hsinchu, TW 53 758
Yang, Chin-Lung Taoyuan, TW 31 263

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