Near field communication antenna

A near-field communication antenna and coil technology, which is applied to antennas, loop antennas, electrical components, etc., can solve the problems of weak electric field strength, the inability of the reader to obtain a good reception effect, and reduce the communication quality of the near-field communication antenna. Overall omnidirectional effect

Active Publication Date: 2015-06-03
WISTRON NEWEB
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Problems solved by technology

[0003] Taking a mobile device with near-field communication function as an example, since its near-field communication antenna usually has to be set in a rectangular card and conforms to its shape, this design method will cause the related reader to be unable to read at various angles. get good reception
For example, when the angle between the reader and the long side of the NFC antenna is 90 degrees or 270 degrees, the electric field strength received by the reader will be relatively weak, thus reducing the near field Communication quality of communication antenna

Method used

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Embodiment Construction

[0041] In order to make the purpose, features and advantages of the present invention more comprehensible, specific embodiments of the present invention are listed below, together with the accompanying drawings, for detailed description as follows.

[0042] figure 1 It is a top view showing the near field communication antenna 100 according to an embodiment of the present invention. The NFC antenna 100 can be installed in a mobile device, such as a smart phone (Smart Phone), a tablet computer (Tablet Computer), or a notebook computer (Notebook Computer). Such as figure 1 As shown, the NFC antenna 100 includes: a dielectric substrate 110 , a coil 120 and a coupling structure 130 . The dielectric substrate 110 may be an FR4 (Flame Retard4) substrate. The coil 120 and the coupling structure 130 can be made of conductors, such as copper, silver, aluminum, iron or alloys thereof. The coil 120 is disposed on the dielectric substrate 110 . In some embodiments, the coil 120 serve...

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Abstract

A near field communication antenna comprises a dielectric substrate, a coil and a coupling structure, wherein the coil is arranged on the dielectric substrate; the coupling structure comprises at least one coupling branch; and two tail ends of the coupling branch are respectively connected with two different connection points on the coil. The coupling structure of the invention can average coupling current of the near field communication antenna, and omnidirectional performance of the near field communication antenna is further improved.

Description

technical field [0001] The present invention relates to a near field communication (Near Field Communication, NFC) antenna, in particular to an omnidirectional (Isotropic) and high-efficiency near field communication antenna. Background technique [0002] With the development of mobile communication technology, mobile devices have become more and more common in recent years, such as portable computers, mobile phones, multimedia players and other portable electronic devices with mixed functions. In order to meet people's needs, mobile devices generally have a wireless communication function. Some cover long-distance wireless communication ranges, for example: mobile phones use 2G, 3G, LTE (Long Term Evolution, Long Term Evolution) systems and use 700MHz, 850MHz, 900MHz, 1800MHz, 1900MHz, 2100MHz, 2300MHz and 2500MHz for communication , while some cover short-range wireless communication ranges, such as: Wi-Fi, Bluetooth (Bluetooth) and WiMAX (Worldwide Interoperability for M...

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Application Information

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IPC IPC(8): H01Q7/00H01Q23/00
Inventor 林协志陈良恺王伊淳
Owner WISTRON NEWEB
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