Transducer employing wireless transmissions for sending and...

Details Transducer employing wireless transmissions for sending and... Transducer employing wireless transmissions for sending and...

2007-10-16

2007-10-16

Bui, Bryan (Department: 2863)

Data processing: measuring, calibrating, or testing

Measurement system

Pressure

Reexamination Certificate

active

11003238

ABSTRACT:
A transducer is implemented to operate with transmitted frequency signals. These transmitted signals provide a bias potential to the transducer and enable the transducer to transmit a transducer output signal to a remote location. The transducer has an antenna for receiving transmitted signals. The antenna is coupled to a rectifier circuit; the rectifier circuit is operative to provide a DC voltage in response to said received transmitted signals. This DC voltage is applied to the piezoresistive array via a switching arrangement coupled between the array and the rectifier circuit. An interface circuit controls the switching arrangement to enable DC bias to be applied to the array in a first mode and to remove the bias in a second mode.

REFERENCES:
patent: 6248083 (2001-06-01), Smith et al.
patent: 6359444 (2002-03-01), Grimes
patent: 2002/0045921 (2002-04-01), Wolinsky et al.
patent: 2002/0177782 (2002-11-01), Penner
patent: 2003/0118199 (2003-06-01), Marquis et al.

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