Method of communications in a backscatter system, interrogator, and backscatter communications system
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United States of America Patent
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-
May 8, 2001
Issued Date -
N/A
app pub date -
Apr 26, 2000
filing date -
May 18, 1998
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An interrogator for use in a backscatter system, the interrogator comprising an antenna configured to receive a backscatter signal; an IQ downconverter coupled to the antenna and configured to downconvert the backscatter signal to produce I and Q signals; a combiner coupled to the IQ downconverter and configured to combine the I and Q signals to produce a combined signal; and an analog to digital converter coupled to the combiner and configured to convert the combined signal to a digital signal. A method of communications in a backscatter system, the method comprising receiving a backscatter signal; downconverting the backscatter signal with an IQ downconverter to produce I and Q signals; combining the I and Q signals to produce a combined signal; and converting the combined signal to a digital signal.
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