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Device and method for clock signal recovery, nfc chip

A clock signal and signal technology, applied in the direction of synchronization device, wireless communication, electrical components, etc., can solve the problem of phase synchronization between clock signal and differential input signal, and achieve the effect of phase synchronization

Active Publication Date: 2022-03-18
北京紫光青藤微系统有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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, nfc chip
  • Device and method for clock signal recovery, nfc chip
  • Device and method for clock signal recovery, nfc chip

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Embodiment Construction

[0022] In order to understand the features and technical contents 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 with reference to the accompanying drawings, which are for reference only and are not intended to limit the embodiments of the present disclosure. In the following technical description, for the convenience of explanation, numerous details are provided 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-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or s...

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Abstract

The present application relates to the technical field of wireless communication, and discloses a device for recovering a clock signal. Including: a differential input signal module, which is used to obtain the antenna voltage and generate a differential input signal according to the antenna voltage; a pre-amplification module, the first end of which is electrically connected to one end of the differential input signal module; the pre-amplification module is used to amplify the differential input signal; A comparator, one end is electrically connected to the second end of the pre-amplification module, the comparator is used to compare the amplified differential input signal to obtain a clock signal; the negative feedback module, the first end is electrically connected to the other end of the differential input signal module, The second end of the negative feedback module is electrically connected to the third end of the pre-amplification module, and the third end of the negative feedback module is electrically connected to the other end of the comparator; the negative feedback module is used to perform the amplification parameter of the differential input signal according to the clock signal adjustment to achieve recovery of the clock signal. The application also discloses a method for recovering a clock signal and an NFC chip.

Description

technical field [0001] The present application relates to the field of wireless communication technologies, for example, to an apparatus and method for clock signal recovery, and an NFC chip. Background technique [0002] At present, with the increasing application of wireless communication chips, especially the popularization of small-sized wristbands, watches and other consumer goods with wireless communication chip functions, the terminal system has higher and higher performance requirements for wireless communication chips, among which the receiving sensitivity is wireless One of the most important indicators of communication chips. Among the factors that affect 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 the related art: [0004] In the prior art, the clock signal is recovered by ampli...

Claims

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Application Information

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Patent Type & Authority Patents(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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