Wireless communication device
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United States of America Patent
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Jul 8, 2014
Grant Date -
Apr 11, 2013
app pub date -
Oct 4, 2012
filing date -
Oct 7, 2011
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A disclosed wireless communication device performing transmission and reception in a time-division manner includes an antenna, a transmission unit, a reception unit, a transmission/reception switchover unit, a first path switchover unit, a directional coupler, a second path switchover unit, a first fault diagnosis unit, and a second fault diagnosis unit. The second fault diagnosis unit causes the second path switchover unit to form a reflection signal input path; causes a second transmission signal level-adjusted for fault diagnosis to be outputted from the transmission unit; acquires a signal level of a reflection signal from the antenna inputted from the directional coupler into the reception unit; and determines whether or not a transmission radio wave is normally emitted from the antenna based on the signal level of the reflection signal.
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Family
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