Bidirectional wireless communication system, wireless communication apparatus, and bidirectional wireless communication method
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United States of America Patent
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Apr 30, 2013
Grant Date -
Mar 31, 2011
app pub date -
Sep 10, 2010
filing date -
Sep 30, 2009
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A bidirectional wireless communication system includes: a first wireless communication apparatus for bidirectional communication configured to multiplex a modulated signal obtained by modulating an input signal by a reference carrier signal having a predetermined carrier frequency, and transmit a resultant transmission signal; and a second wireless communication apparatus, having an oscillator configured to oscillate a signal having a free-running oscillation frequency, configured to inject a reception signal received from the first wireless communication apparatus into the oscillator, receive the reception signal while variably controlling the free-running oscillation frequency of the oscillator of the second wireless communication apparatus, detect whether the free-running oscillation frequency of the signal of the oscillator of the second wireless communication apparatus has entered the frequency range up to the injection locking to be frequency-locked with a carrier frequency of the injected reception signal, and generate a communication enable signal.
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