Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

NFC (Near Field Communication) antenna and mobile phone using same

An antenna coil and antenna technology, which is applied to antennas, loop antennas, antenna supports/mounting devices, etc., can solve the problems of increasing mobile phone production costs, increasing mobile phone thickness, and limiting mobile phone design space, so as to reduce mobile phone production costs and reduce The thickness of the mobile phone and the effect of enhancing the magnetic field induction strength

Inactive Publication Date: 2011-05-25
HUIZHOU TCL MOBILE COMM CO LTD
View PDF5 Cites 40 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Since the NFC frequency band uses 13.56MHz, the size of the NFC antenna is required to be large, which limits the design space of the mobile phone
And because the electronic wallet technology requires the antenna to generate a certain magnetic field induction intensity, and the magnetic field induction intensity must be within a certain spatial range and angle, so this requirement also limits the design space of the mobile phone.
[0004] In order to use the NFC antenna in the limited mobile phone space, it is usually used to load ferrite material on the NFC antenna coil or increase the number of turns of the NFC antenna coil to enhance the magnetic field induction strength. This method not only increases the thickness of the mobile phone, but also increases the thickness of the mobile phone. cost of production

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • NFC (Near Field Communication) antenna and mobile phone using same
  • NFC (Near Field Communication) antenna and mobile phone using same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] Below, the present invention will be described in detail with reference to the accompanying drawings.

[0016] Such as figure 1 As shown, the present embodiment provides a kind of NFC antenna 10, and this antenna comprises: two NFC antenna coils 11, between these two NFC antenna coils 11, connect two NFC antenna coils 12 in the same plane The antenna coils 11 are connected in parallel, and at the midpoints of the two parallel double wires 12, a feeding terminal for connecting the antenna matching circuit is drawn out.

[0017] The excitation currents in the two NFC antenna coils 11 are in-phase currents, therefore, the magnetic fields generated by the two in-phase currents are superimposed in the same phase within the range between the two NFC antenna coils 11, which enhances the magnetic field induction. At the same time, mutual inductance is also generated between the two NFC antenna coils 11, and the magnitude of the mutual inductance is related to the relative posi...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides an NFC (Near Field Communication) antenna and a mobile phone using the same, wherein the antenna comprises two NFC antenna coils which are spliced at the same plane through two parallel double-conductor lines; and a feed end connected with an antenna matching circuit is led out from the middle points of the parallel double-conductor lines respectively. The mobile phone comprises a mobile phone PCB (Printed Circuit Board) main board, an NFC chip, an antenna matching circuit and an NFC antenna. According to the NFC antenna and the mobile phone provided by the invention, two NFC antenna coils are set, two NFC antenna coils are spliced at the same plane by using two parallel double-conductor lines, and the feed end connected with the antenna matching circuit is led out from the middle points of the parallel double-conductor lines respectively, thus adding and number of windings of the antenna coils, the magnetic induction intensity can be strengthened by the antenna without increasing ferrite materials or turns of the antenna coil, and the thickness and manufacturing cost of the mobile phone are reduced effectively.

Description

technical field [0001] The invention relates to the technical field of wireless mobile communication, in particular to an NFC antenna and a mobile phone using the antenna. Background technique [0002] NFC (Near Field Communication) is a short-range non-contact communication technology, which combines non-contact sensing and wireless connection technology, and works in the 13.56MHz frequency band. Compared with other short-distance wireless communication technologies, NFC technology is safer and has a shorter response time, so it is very suitable as an electronic wallet technology in a wireless transmission environment. A series of cards such as bank cards, credit cards, point cards, and traffic cards can be integrated on a mobile phone for easy portability and management. [0003] Since the NFC frequency band uses 13.56MHz, the size of the NFC antenna is required to be large, which limits the design space of the mobile phone. And because the electronic wallet technology r...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/24H01Q1/36H01Q7/00H04M1/02
Inventor 张莲罗敏丽
Owner HUIZHOU TCL MOBILE COMM CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com