Multi-band microwave detector
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United States of America Patent
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Dec 7, 1993
Grant Date -
N/A
app pub date -
Mar 2, 1993
filing date -
Mar 6, 1992
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A multi-band microwave detector is designed for detecting microwaves of a plurality of target bands from a specific source and a reference band, which target band includes a specific target band. The multi-band microwave detector comprises a super heterodyne receiving means cyclically performing receiving operation of the microwaves in the target band and the reference band in time sharing manner, a signal discrimination means for discriminating reception outputs from the receiving means for respective bands for generating detecting signals representative of the results of discrimination, means responsive to a detecting signal indicative of detection of the received microwave of one of the target bands other than the specific target band for triggering an alarm, and means responsive to a detecting signal indicative of detection of the received microwave of the specific target band and to the detection signal indicative of detection of the received microwave of the reference band, for triggering the alarm only when the detecting signal indicative of detection of the received microwave of the specific target band is present under absence of the detection signal indicative of detection of the reference band.
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