Signal receiver and method thereof, transceiver, and network system
AssigneeOMRON Corporation
InventorsHidemitsu Kawashima, Akihiko Nakamura, Yoichi Toguchi
Life of this patent
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Abstract
A signal receiver includes a superregenerative circuit for feeding back a part of an output signal to form part of an input signal through a feedback route to execute a superregeneration, a capacitance element disposed in the feedback route of the superregenerative circuit, a switch for switching the capacitance element, and a PLL circuit for generating a clock signal for switching the switch based on an output of the superregenerative circuit.
Claims12
A signal receiver comprising:
- a superregeneration circuit for feeding back a part of an input signal through a feedback route to execute superregeneration,
- a capacitance element disposed in the feedback route of said superregeneration circuit,
- a switch for switching said capacitance element, and
- a generator for generating a clock signal for switching said switch based on an output of said superregeneration circuit.
A signal reception method in a signal receiver which includes a superregeneration circuit for feeding back a part of an output signal to form part of an input signal through a feedback route to execute a superregeneration, a capacitance element disposed in the feedback route of said superregeneration circuit, and a switch for switching said capacitance element, comprising the steps of;
- generating a clock signal for switching said switch based on an output of said superregeneration circuit, and
- switching said switch based on said generated clock signal.
A signal receiver comprising:
- a superregeneration circuit for feeding back a part of an output signal to form part of an input signal through a feedback route to an input to execute superregeneration,
- a capacitance element disposed in the feedback route of said superregeneration circuit,
- a switch for switching said capacitance element,
- a generator for generating a clock signal for switching said switch based on an output of said superregeneration circuit,
- a modifier for changing a frequency of a signal regenerated by said superregeneration circuit,
- a level detector for detecting the level of output of said superregeneration circuit,
- a frequency detector for detecting the frequency having the minimum noise among the frequencies of the signals regenerated by said superregeneration circuit as a result of detection by said level detector, and
- a controller for controlling said modifier in response to an output of said frequency detector.
A signal receiver comprising:
- a superregeneration circuit for feeding back a part of an output signal to form part of an input signal through a feedback route to execute superregeneration,
- a capacitance element disposed in the feedback route of said superregeneration circuit,
- an operational amplifier disposed in the feedback route of said superregeneration circuit,
- a switch for switching said capacitance element, and
- a generator for generating a clock signal for switching said switch based on an output of said superregeneration circuit.
Dependencies are inferred from the claim text.