Invention Grant
US07732977B2 Transceiver circuit for film bulk acoustic resonator (FBAR) transducers 有权
用于薄膜体声波谐振器(FBAR)传感器的收发器电路

Transceiver circuit for film bulk acoustic resonator (FBAR) transducers
Abstract:
A piezoelectric transducer device includes a receive signal path, a transistor and a piezoelectric transducer connected to a first terminal of the transistor. The device also includes a switch connected to a second terminal of the transistor, wherein the switch is adapted to selectively connect the second terminal of the transistor to a transmit signal or to a bias voltage; an output connected to a third terminal of the transistor, and adapted to receive a signal from the transducer when the switch is connected to the bias voltage, wherein the switch is not in the receive signal.
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