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

Multi-directional near-field communication antenna device

A near-field communication antenna and antenna device technology, which is applied in the direction of antenna support/installation device, loop antenna with ferromagnetic material core, radiation element structure, etc., can solve the problem of single radiation direction of near-field antenna, and achieve The effect of improving the reading and writing distance

Active Publication Date: 2016-10-12
UNIV OF ELECTRONIC SCI & TECH OF CHINA
View PDF5 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the defect of the single radiation direction of the existing near-field antenna, and proposes a multi-directional near-field communication antenna device, which enables the electronic device device of the present invention to form omnidirectional radiation along the top of the mobile electronic device, and improves the reading and writing distance

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
  • Multi-directional near-field communication antenna device
  • Multi-directional near-field communication antenna device
  • Multi-directional near-field communication antenna device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Such as image 3 As shown, a planar quadrilateral helical antenna with an area of ​​40mm×20mm is made, designed with 5 turns, the line width is 0.4mm, and the line spacing is 0.2mm. Fold the gap in half, and make a hole along the gap, and pass the magnetic material through the hole, that is, the quadrilateral helical antenna sandwiches the magnetic material layer in the middle, the thickness of the magnetic material layer is 0.1mm, and the real part of the magnetic permeability of the magnetic material is 150@13.56 MHz, the imaginary part of magnetic permeability 2@13.56MHz, the antenna is assembled on the inner surface of the mobile electronic device near the top, which is recorded as the antenna device of the present invention.

[0029] Make a planar quadrilateral helical antenna with an area of ​​40mm×20mm, adopt 5-turn design, line width 0.4mm, line spacing 0.2mm, lay a magnetic material layer on the bottom, the thickness of the magnetic material layer is 0.1mm, and...

Embodiment 2

[0034] Such as image 3 As shown, make a planar quadrilateral helical antenna with an area of ​​40mm×10mm, adopt 5-turn design, line width 0.5mm, line spacing 0.2mm, fold in half along the gap between the second and third wires on the longer side of the quadrilateral helical antenna , and make a hole along the gap, and pass the magnetic material through the hole, that is, the quadrilateral helical antenna sandwiches the magnetic material layer in the middle, the magnetic material area is 40mm×12mm, the magnetic material layer thickness is 0.2mm, and the magnetic permeability of the magnetic material is The real part is 150@13.56MHz, and the imaginary part of the magnetic permeability is 2@13.56MHz. The antenna is mounted on the side wall of the mobile electronic device, such as Figure 5 As shown, the antenna device of the present invention is formed.

[0035] Make a planar quadrilateral helical antenna with an area of ​​40mm×10mm, adopt a 5-turn design, a line width of 0.5mm...

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

PropertyMeasurementUnit
Thicknessaaaaaaaaaa
Permeabilityaaaaaaaaaa
Permeabilityaaaaaaaaaa
Login to View More

Abstract

The invention provides a multi-directional near-field communication antenna device which comprises an insulating layer, a coil conductor, a flexible substrate and a magnetic material layer. The coil conductor comprises a first coil conductor and a second coil conductor, wherein the first coil conductor and the second coil conductor are respectively located on both sides of the magnetic material layer. The insulating layer is formed on the surface of the coil conductor. The flexible substrate is a substrate material for supporting the coil conductor. The magnetic material layer is arranged between the first coil conductor and the second coil conductor. The first coil conductor and the second coil conductor form a complete helical coil. The first coil conductor and the second coil conductor are non-symmetrical. The near-field communication antenna device provided by the invention enables an electronic device to form omnidirectional radiation along the top of a mobile electronic device to increase reading and writing distance.

Description

technical field [0001] The present invention relates to an antenna device used in an RFID system, an NFC system, and a short-distance wireless communication system that communicate with a counterpart device through an electromagnetic field signal. Background technique [0002] In recent years, with the continuous promotion and use of RFID (Radio Frequency Identification) systems and NFC (Near Field Communication) systems, in order to communicate between mobile electronic devices or between mobile electronic devices and basic card reading devices, among various devices, especially In a handheld mobile electronic device equipped with a communication antenna for an NFC system or an RFID system, the antenna is usually mounted inside the casing of the mobile device. [0003] The near-field communication antenna uses a metal coil as the main body, and a magnetic material layer is installed on one side of the coil to enhance the radiation field of the near-field antenna. The anten...

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
IPC IPC(8): H01Q7/06H01Q1/38H01Q1/22H01Q1/24
Inventor 邓龙江李维佳阙志勇梁迪飞陈良谢建良
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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