NFC antenna structure for metal back cover mobile phone

Abstract

The invention relates to an NFC antenna structure for a metal back cover mobile phone. An NFC antenna with a coil form is arranged in a metal back cover of a mobile phone. The metal back cover of the mobile phone is provided with a concave groove used for blocking a vertex of the metal back cover of the mobile phone and a hole used for arranging a camera. The NFC antenna communicates with an external reader-writer antenna via the concave groove and the hole based on magnetic field coupling. The NFC antenna comprises an NFC coil and a ferrite magnetic sheet. The concave groove starts at one side of the metal back cover of the mobile phone and ends at the opposite side of the metal back cover of the mobile phone. The concave groove comprises two transverse grooves and two vertical grooves. The NFC antenna employs the opening for arranging the camera in the metal back cover of the mobile phone for radiation and the metal back cover of the mobile phone is provided with the concave groove, so that the vortex of the metal back cover is prevented from causing magnetic field interference to the NFC antenna and the excellent electrical performance of the NFC antenna and the reader-writer can be guaranteed during work.

Description

technical field [0001] The invention relates to an NFC antenna structure suitable for mobile payment by mobile phone, and belongs to the technical field of antennas. Background technique [0002] At present, the development trend of mobile phones is towards thinner and multi-functional development. As the thickness of the mobile phone is getting thinner, its mechanical strength is greatly reduced. Manufacturers and users are worried that under the action of external force, the plastic back cover of the mobile phone will not be able to withstand the external force and will deform, destroy the beautiful appearance, and even affect the normal operation of the mobile phone. . Therefore, as a substitute for the plastic back cover of a mobile phone, a metal back cover with better mechanical strength and higher visual and tactile experience has become the first choice. [0003] While the thickness of mobile phones is getting thinner, the communication functions are increasing. In...

AI Technical Summary

Problems solved by technology

[0004] However, if the mobile phone uses a fully enclosed metal back cover, the metal back cover will affect the normal operation of the NFC antenna, making the communication distance of the mobile payment function not meet the standard requirements, so it is necessary to design a solution to reduce The influence of the metal back cover of the mobile phone on the NFC antenna, so that the mobile payment function of the mobile phone can be used normally

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