Unlock instant, AI-driven research and patent intelligence for your innovation.

A small size and high performance nfc antenna structure

An antenna structure and high-performance technology, applied in the field of communication, can solve the problem of antenna performance being comparable, and achieve the effect of improving antenna performance and enhancing flexibility

Active Publication Date: 2019-08-27
SHENZHEN SUNWAY COMM
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although compared with the traditional NFC antenna scheme, the zigzag NFC antenna scheme has greatly improved in terms of antenna size, but its antenna performance is still not completely comparable to the traditional large-size NFC antenna

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
  • A small size and high performance nfc antenna structure
  • A small size and high performance nfc antenna structure
  • A small size and high performance nfc antenna structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] like figure 2 As shown, Embodiment 1 of the present invention is a small-sized high-performance NFC antenna structure, figure 2 The top is the front view, and the bottom is the side view. The antenna structure is suitable for mobile devices such as mobile phones, iPADs, and handheld computers, and includes a metal plate 1, ferrite 2 and antenna coil 3, and the ferrite 2 and antenna coil 3 are on one side of the metal plate 1, usually It is on the back side of the mobile device, and the metal plate 1 can be a PCB board, a shielding case or a battery on the PCB board, and the like. The antenna coil 3 is in the shape of an 8, and is organically embedded with the ferrite 2 , and the ferrite 2 is inserted between the first coil, the second coil and the metal plate 1 of the 8-shaped antenna coil 3 . The 8-shaped antenna coil 3 is divided into the following two main parts by ferrite: the first branch 4 and the second branch 5 that are in close contact with the metal plate ...

Embodiment 2

[0034] like Figure 7 As shown, the difference between the second embodiment of the present invention and the first embodiment is that the NFC antenna coil 3 is arranged in the center of the metal plate 1 . Like Murata's Z-type NFC antenna, no matter where the NFC antenna coil of the present invention is placed, there will be left and right modes. Since the 8-shaped NFC antenna in this case has left-right symmetry, the antenna coil will have the same antenna performance if it is placed on the left or right side of the metal plate. But when the antenna coil is placed in the center of the metal plate, it is different than when it is placed on the left or right side, in which case effective eddy currents are created on the metal plate for the first and second coils The area occupied by the metal plate is the same, the antenna signal detected above the entire metal plate will be uniform, and there is no need to adjust the angle during use, which is very convenient.

[0035] In s...

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 discloses a small-size high-performance NFC antenna structure. The small-size high-performance NFC antenna structure comprises a metal plate, ferrite and an antenna coil; the metal plate is located at one side of the ferrite; the antenna coil is 8-shaped and comprises a first coil and a second coil; the ferrite is sleeved with the first coil and the second coil; and the joint of the first coil and the second coil is locate at the other side of the ferrite. Compared with a Murata Z-shaped NFC antenna, the two coils of the 8-shaped NFC antenna of the invention can both generate effective eddy current corresponding to the two coils, and thus, the performance of the antenna and use flexibility of the NFC antenna can be improved under the situation that the peripheral dimensions of the NFC antenna and the ferrite, as well as the total length of the windings of the coils of the antenna are not changed.

Description

technical field [0001] The invention relates to the communication field, in particular to a small-sized and high-performance NFC antenna structure. Background technique [0002] Near Field Communication (NFC, Near Field Communication) is a wireless communication technology that uses magnetic field induction to send and receive electromagnetic waves to realize short-distance communication between electronic devices. This technology can also be called a non-contact identification and interconnection technology. . This technology can provide consumers with simple and intuitive information exchange, content access and services. Due to the particularity of the NFC technology, NFC has been paid more and more attention recently, and the technology has been applied to devices such as mobile devices, PCs, and smart controls. In the application of traditional NFC handheld devices, it is generally chosen to place the NFC antenna radiator on the battery. At the same time, in order to ...

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 Patents(China)
IPC IPC(8): H01Q7/06
Inventor 赵安平陈浩
Owner SHENZHEN SUNWAY COMM