Transceiver based on phase-locked loop and communication method thereof

A transceiver and phase-locked loop technology, applied in the field of communication, can solve the problems of no transmitter structure, low power consumption, etc. in a paper published in the Journal of Circuits and Systems (TCAS) in 2013, Achieve the effect of reducing power consumption, reducing cost, and reducing product volume

Inactive Publication Date: 2015-11-25
PEKING UNIV SHENZHEN GRADUATE SCHOOL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, the Chinese patent CN201491012U proposes a communication chip based on the human body channel, and its transceiver structure adopts a traditional structure; the Korea Institute of Science and Technology (KAIST) has conducted in-depth research on this, and published a paper in the Journal of Solid State Circuits (JSSC) in 2007. In a paper, a low-power transceiver structure for baseband transmission was proposed; and in a 2012 Journal of Solid State Circuits (JSSC) paper, a dual-mode frequency shift keying (Double-FSK) technology was proposed. Anti-jammi

Method used

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  • Transceiver based on phase-locked loop and communication method thereof
  • Transceiver based on phase-locked loop and communication method thereof
  • Transceiver based on phase-locked loop and communication method thereof

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Experimental program
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Effect test

Embodiment 1

[0033] Please refer to Figure 1 to Figure 4 , the transceiver of the present embodiment includes a transmitter and a receiver, the transmitter includes a modulation circuit 11 and a charge pump phase-locked loop 2, the signal input end of the modulation circuit 11 is used to receive the human body input signal collected by the signal acquisition module, and the output end Coupled to the voltage-controlled oscillator 27, the output signal of the modulation circuit 11 is used to modulate the oscillation signal of the voltage-controlled oscillator 27; the receiver includes a signal amplifier circuit, a hysteresis comparator 34 and a charge pump phase-locked loop 2, and the signal amplifier circuit is used for The modulated signal is received and amplified, the output of the signal amplifying circuit is coupled to the dual-two selection circuit 22 , one input terminal of the hysteresis comparator 34 is coupled to the output terminal of the loop filter 26 , and the other terminal i...

Embodiment 2

[0046] The communication method in this embodiment is based on the transceiver provided in Embodiment 1, wherein the communication method of the transmitter includes steps:

[0047] According to the first control signal and the second control signal, the double-two selection circuit transmits the received output signal of the voltage-controlled oscillator and the reference clock output by the crystal oscillator, and couples to the frequency and phase detector;

[0048] A charge pump charges the loop filter;

[0049] The charge pump receives the charge control signal, disconnects the circuit, and makes the transmitter send data in the open state of the phase-locked loop;

[0050] The communication method of the receiver includes the steps of:

[0051] According to the first control signal and the second control signal, the double-two selection circuit transmits the received modulation signal and the feedback signal of the voltage-controlled oscillator, and couples it to the fr...

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PUM

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Abstract

The invention discloses a transceiver based on a phase-locked loop and a communication method thereof, wherein the transceiver comprises a transmitter and a receiver. The transceiver comprises a modulating circuit and is used for realizing frequency-shift keying modulation on an input signal. The receiver comprises a signal amplifying circuit and a hysteresis comparator. The receiver is used for demodulating an input modulation signal. The transmitter and the receiver share a charge pump phase-locked loop. The transceiver can be used in the field of human body communication. Because multiplexing of partial circuits of the transmitter and the receiver is realized, the transceiver has advantages of greatly reducing power consumption, satisfying a requirement for application of human body communication, furthermore facilitating product size reduction and reducing cost.

Description

technical field [0001] The present application relates to the communication field, and in particular to a transceiver and a communication method based on a phase-locked loop. Background technique [0002] Nowadays, with the improvement of the quality of life, people pay more and more attention to the field of health and health care. Portable and intelligent medical and health devices are emerging, and low power consumption, integration, and wearable have gradually become the development of these medical and health devices. direction. [0003] At present, frequency shift keying (FSK) modulation technology is widely used in short-distance wireless signal transmission. With the rapid development of body area network technology in recent years, the power consumption and reliability of transceivers based on this technology , Anti-interference ability requirements are getting higher and higher. [0004] Many transceiver structures based on human body communication have appeared ...

Claims

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Application Information

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IPC IPC(8): H03L7/08H03L7/099H04B1/40
Inventor 林科王新安张兴汪波王超勋侯佳力王墨
Owner PEKING UNIV SHENZHEN GRADUATE SCHOOL
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