Patent ID: 9375153
Filing Date: 2016-06-28
CPC Classification: A61B,G01S,G08B

Claim Text:
1. A motion/vibration sensor, including: a transmit/receive antenna unit; an oscillation unit, coupled to the transmit/receive antenna unit; and a frequency-mixing unit coupled to the transmit/receive antenna unit and the oscillation unit; wherein the transmit/receive antenna unit receives an output signal from the oscillation unit and transmits a detection signal toward at least one object according to the output signal; the detection signal is reflected by the object as a reflected detection signal and received by the transmit/receive antenna unit; the oscillation unit receives the reflected detection signal from the transmit/receive antenna unit for self-injection locking and the frequency-mixing unit receives the reflected detection signal from the transmit/receive antenna unit for frequency demodulation; and the frequency-mixing unit mixes and demodulates the reflected detection signal from the transmit/receive antenna unit with the output signal from the oscillation unit into a baseband output signal which represents a motion/vibration information.