MOTION/VIBRATION SENSOR
First Claim
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;
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.
1 Assignment
0 Petitions
Accused Products
Abstract
A motion/vibration sensor includes a transmit/receive antenna unit, an oscillation unit and a frequency-mixing unit. The transmit/receive antenna unit receives an output signal from the oscillation unit and transmits a detection signal toward at least one object. 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. 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.
25 Citations
9 Claims
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1. A motion/vibration sensor, including:
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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; 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification