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Consumer Sleep Technology
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Patent US10143386
Issued 2018-12-04
Range Gated Radio Frequency Physiology Sensor
A sensor for physiology sensing may be configured to generate oscillation signals for emitting radio frequency pulses for range gated sensing. The sensor 402 may include a radio frequency transmitter configured to emit the pulses and a receiver configured to receive reflected ones of the emitted radio frequency pulses. The received pulses may be processed to detect physiology characteristics such as motion, sleep, respiration and/or heartbeat. In some embodiments, the sensor may employ a circuit including a pulse generator configured to generate signal pulses. The circuit may also include a dielectric resonator oscillator configured to generate a radio frequency oscillating signal. A switched oscillation circuit may be coupled to the pulse generator and the dielectric resonator oscillator. The switched circuit may be configured to generate a pulsed radio frequency oscillating signal for emitting the radio frequency pulses.
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- 1. A radio frequency motion sensor comprising:
a radio frequency transmitter, the transmitter configured to emit radio frequency pulses; and a receiver configured to receive reflected ones of the emitted radio frequency pulses, the radio frequency transmitter comprising: a pulse generator configured to generate signal pulses, wherein the pulse generator comprises a logic gate circuit;
a dielectric resonator oscillator configured to generate a stable radio frequency oscillating signal; and
a switched circuit coupled to the pulse generator and the dielectric resonator oscillator, the switched circuit configured to generate a pulsed radio frequency oscillating signal that is modulated by the signal pulses of the pulse generator and whose dominant frequency is derived from the dielectric resonator oscillator.
- 20. A circuit for generating signals to produce radio frequency pulses for range gated physiology sensing, the circuit comprising:
a pulse generator configured to generate signal pulses, wherein the pulse generator comprises a logic gate circuit; a dielectric resonator oscillator configured to generate a radio frequency oscillating signal; a switched amplifier circuit coupled to the pulse generator and the dielectric resonator oscillator, the switched amplifier circuit configured to generate a pulsed radio frequency oscillating signal in accordance with the signal pulses and radio frequency oscillating signal; an antenna feed coupled with an output of the switched amplifier circuit to accept the generated pulsed radio frequency oscillating signal and emit radio frequency pulses in accordance with the pulsed radio frequency oscillating signal via an antenna; and a dithering circuit coupled with the pulse generator to dither the signal pulses generated by the pulse generator.
- 22. A circuit for generating signals to produce radio frequency pulses for range gated physiology sensing, the circuit comprising:
a pulse generator configured to generate signal pulses, wherein the pulse generator comprises a logic gate circuit; a dielectric resonator oscillator configured to generate a radio frequency oscillating signal; a switched circuit coupled to the pulse generator and the dielectric resonator oscillator, the switched circuit configured to generate a pulsed radio frequency oscillating signal in accordance with the signal pulses and radio frequency oscillating signal; and an antenna feed coupled with an output of the switched circuit to accept the pulsed radio frequency oscillating signal and to emit radio frequency pulses in accordance with the pulsed radio frequency oscillating signal via an antenna.
