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Device and method for clock signal recovery and NFC chip

A clock signal and signal technology, applied in synchronization devices, wireless communications, electrical components, etc., can solve the problems of phase synchronization between clock signals and differential input signals, and achieve the effect of phase synchronization

Active Publication Date: 2021-12-17
北京紫光青藤微系统有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Embodiments of the present disclosure provide a device and method for clock signal recovery, and an NFC chip, so as to be able to solve the phase synchronization problem between the clock signal and the differential input signal

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  • Device and method for clock signal recovery and NFC chip
  • Device and method for clock signal recovery and NFC chip
  • Device and method for clock signal recovery and NFC chip

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Embodiment Construction

[0022] In order to understand the characteristics and technical content of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure will be described in detail below in conjunction with the accompanying drawings. The attached drawings are only for reference and description, and are not intended to limit the embodiments of the present disclosure. In the following technical description, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown simplified in order to simplify the drawings.

[0023] The terms "first", "second" and the like in the description and claims of the embodiments of the present disclosure and the above drawings are used to distinguish similar objects, and are not necessarily used...

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Abstract

The invention relates to the technical field of wireless communication, and discloses a device for clock signal recovery. The device includes: a differential input signal module which is used for acquiring antenna voltage and generating a differential input signal according to the antenna voltage; a pre-amplification module, wherein the first end of the pre-amplification module is electrically connected with one end of the differential input signal module, and the pre-amplification module is used for amplifying the differential input signal; a comparator, wherein one end of the comparator is electrically connected with the second end of the pre-amplification module, and the comparator is used for comparing the amplified differential input signals to obtain clock signals; and a negative feedback module, wherein the first end of the negative feedback module is electrically connected with the other end of the differential input signal module, the second end of the negative feedback module is electrically connected with the third end of the pre-amplification module, the third end of the negative feedback module is electrically connected with the other end of the comparator, and the negative feedback module is used for adjusting an amplification parameter of the differential input signal according to the clock signal so as to recover the clock signal. The invention also discloses a method for clock signal recovery.and an NFC chip.

Description

technical field [0001] The present application relates to the technical field of wireless communication, for example, to a device and method for recovering a clock signal, and an NFC chip. Background technique [0002] At present, with the increasingly widespread application of wireless communication chips, especially the popularity of small-sized bracelets, watches and other consumer products with wireless communication chip functions, terminal systems have higher and higher performance requirements for wireless communication chips, among which the receiving sensitivity is the wireless communication chip. One of the most important indicators of communication chips. Among the factors affecting the receiving sensitivity index, the recovery of the clock signal is the main component. [0003] In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in related technologies: [0004] In the prior art, the r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/80H04W56/00
CPCH04W4/80H04W56/00
Inventor 黄金煌
Owner 北京紫光青藤微系统有限公司
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