Method and apparatus for full duplex sideband communication
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United States of America Patent
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Oct 8, 2002
Grant Date -
N/A
app pub date -
Apr 24, 1998
filing date -
Apr 24, 1998
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention is an apparatus and method for using electromagnetic energy as the means of automatic data collection (ADC). The communication system that comprises the invention utilizes frequency modulated ('FM') sideband electromagnetic energy to enable full duplex communication with another communication device. In one embodiment one of the communication devices is passive and the carrier is used to power the passive device. In another embodiment the communication devices are active and the carrier is suppressed to increase range or decrease power constraints, as the application requires.
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