Transponder system
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United States of America Patent
Stats
-
Apr 19, 1994
Issued Date -
N/A
app pub date -
Sep 4, 1992
filing date -
Aug 12, 1991
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An identification and telemetry system comprising: a signal responding label including a first antenna for receiving an interrogation signal and for scattering a reply signal, an impedance connected to the first antenna, means for generating the reply signal and means for varying the impedance connected to the first antenna in accordance with the reply signal; and an interrogator comprising a second antenna for transmitting an interrogation signal and for receiving the reply signal, a transmitter connected to the second antenna and including a generator of pulsed radio frequency energy, means for separating the reply signal from the transmitted signal, a receiver connected to the second antenna and means within the receiver for detecting and decoding the reply signal.
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