Signal transceiver
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United States of America Patent
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-
Jul 5, 2005
Grant Date -
May 15, 2003
app pub date -
Aug 28, 2002
filing date -
Nov 9, 2001
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A signal transceiver for transmitting a carrier signal to a transponder and receiving a modulated data signal returned by the transponder is provided. The signal transceiver includes a transistor with a base, a collector and an emitter, a controller being electrically connected to the base and providing a controlling signal for turning on the transistor, an oscillation source being electrically connected to the collector for providing the carrier signal, a capacitor being electrically connected to the base and the oscillation source for forming an oscillation circuit, and a resonator being electrically connected to the collector for transmitting the carrier signal to the transponder and receiving the modulated data signal returned by the transponder, and outputting a demodulated data signal through the emitter.
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