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Demodulator for near field communication

A near field communication and demodulator technology, which is applied in the field of wireless communication technology, NFC devices, and near field communication demodulators, can solve the problems of reducing the communication distance of NFC devices, and achieve the effect of increasing the communication distance

Active Publication Date: 2016-05-18
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] When the size of the antenna included in the NFC device is reduced, the amplitude of the antenna voltage generated at the antenna based on electromagnetic waves is also reduced, so that the communication distance of the NFC device is reduced

Method used

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  • Demodulator for near field communication
  • Demodulator for near field communication
  • Demodulator for near field communication

Examples

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Embodiment Construction

[0054] Various example embodiments will now be described more fully with reference to the accompanying drawings. Embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these example embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope to those skilled in the art. In the drawings, the thicknesses of layers and regions may be exaggerated for clarity.

[0055] It will be understood that when an element is referred to as being "on", "connected to", "electrically connected to" or "coupled to" another component, it may be directly on, connected to, Electrically connected or coupled to the other component, or intermediate components may be present. In contrast, when a component is referred to as being "directly on," "directly connected to," "directly electrically connected to" or "directly coupled to" another component, there are no i...

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PUM

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Abstract

A demodulator for near field communication is provided. The demodulator for near field communication may include: a scale down circuit configured to receive first and second modulated signals from first and second power electrodes, and configured to provide a scale down signal to a first node by scaling down magnitudes of the first and second modulated signals; a current source coupled between the first node and a ground voltage, and configured to generate a constant current flowing from the first node to the ground voltage; a charge store circuit coupled between the first node and ground voltage, and configured to perform charge and discharge operations alternately, based on the scale down signal and constant current, to output an envelope signal, which corresponds to an envelope of the scale down signal; and / or an edge detector configured to generate input data, which correspond to the first and second modulated signals, based on a transition of the envelope signal.

Description

[0001] This application claims priority from Korean Patent Application No. 10-2014-0156918 filed on Nov. 12, 2014 at the Korean Intellectual Property Office, the entire contents of which are hereby incorporated by reference. technical field [0002] Some example embodiments may relate generally to wireless communication technologies. Some example embodiments may generally relate to demodulators for near field communications (NFC). Some example embodiments may generally relate to NFC devices including demodulators for NFC. Some example embodiments may generally relate to an electronic device including an NFC device with a NFC demodulator. Background technique [0003] Recently, with the development of Near Field Communication (NFC) technology, which is one of wireless communication technologies, NFC devices can be widely applied to mobile devices. [0004] As the size of mobile devices decreases, antennas included in NFC devices are required to be smaller. [0005] When th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/16H04B5/02
CPCH03D1/12H03D1/22H04B5/72H04W4/80H03D7/02H03D9/06H03D1/10
Inventor 赵钟弼罗智溟宋壹种
Owner SAMSUNG ELECTRONICS CO LTD
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