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
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  • 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, w

Method used

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  • Multi-directional near-field communication antenna device

Examples

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Example Embodiment

[0027] Example 1

[0028] Such as image 3 As shown, a flat quadrilateral helical antenna with an area of ​​40mm×20mm is made with a 5-turn design, the line width is 0.4mm, and the line spacing is 0.2mm, along the long side of the quadrilateral helical antenna between the second and third wires Fold the gap in half and open a hole along the gap to pass the magnetic material through the hole, that is, the quadrilateral spiral 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 material permeability is 150@13.56 MHz, the imaginary part of the magnetic permeability 2@13.56MHz, and the antenna is assembled on the inner surface of the mobile electronic equipment housing near the top, which is recorded as the antenna device of the present invention.

[0029] Fabricate a flat quadrilateral helical antenna with an area of ​​40mm×20mm, with a 5-turn design, a line width of 0.4mm, a line spacin...

Example Embodiment

[0033] Example 2

[0034] Such as image 3 As shown, a flat quadrilateral helical antenna with an area of ​​40mm×10mm is made, with a 5-turn design, a line width of 0.5mm, and a line spacing of 0.2mm. Fold in half along the gap between the second and third wires on the longer side of the quadrilateral helical antenna , And open a hole along the gap, and pass the magnetic material through the hole, that is, the quadrilateral spiral antenna sandwiches the magnetic material layer in the middle. The magnetic material area is 40mm×12mm, the thickness of the magnetic material layer is 0.2mm, and the magnetic material permeability The real part is 150@13.56MHz, the imaginary part of the permeability is 2@13.56MHz, and 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] Fabricate a flat quadrilateral helical antenna with an area of ​​40mm×10mm, with a 5-turn design, a line widt...

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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

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Application Information

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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
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