US Patent No. 9,603,555

MOTION/VIBRATION DETECTION SYSTEM AND METHOD WITH SELF-INJECTION LOCKING


Patent No. 9,603,555
Issue Date March 28, 2017
Title Motion/vibration Detection System And Method With Self-injection Locking
Inventorship Tzyy-Sheng Horng, Kaohsiung (TW)
Fu-Kang Wang, Kaohsiung (TW)
Kang-Chun Peng, Kaohsiung (TW)
Assignee INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE, Hsinchu (TW) NATIONAL SUN YAT-SE...

Claim of US Patent No. 9,603,555

1. A motion/vibration detection system, comprising:
at least one transmitter, the at least one transmitter comprising a transmit/receive antenna unit and a first oscillator unit;
and

at least one receiver, comprising a receiving unit and a demodulation unit; wherein,
the transmit/receive antenna unit is coupled to or electrically connected to a signal output port of the first oscillator
unit, receives an output signal from the first oscillator unit and transmits a detection signal;

the detection signal is reflected from at least one object as a reflected detection signal, which is received by the transmit/receive
antenna unit;

the transmit/receive antenna unit injects the reflected detection signal, as an injection signal, into the first oscillator
unit and accordingly the first oscillator unit is under a self-injection locking mode;

the receiving unit is coupled to or electrically connected to the demodulation unit and receives the detection signal; and
the demodulation unit demodulates the detection signal received by the receiving unit into a baseband output signal, to extract
at least one motion/vibration information of the at least one object.