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Method and device for realizing antenna tuning

An antenna tuning and antenna technology, which is applied to the antenna tuning device and antenna tuning field, and can solve the problems of reducing antenna efficiency in useful frequency bands, antenna influence, mobile phone antenna resonance frequency offset, etc.

Inactive Publication Date: 2017-01-04
GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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Problems solved by technology

[0003] On the other hand, currently most of the USB interfaces of mobile phones are set above or below the mobile phone, and the corresponding USB shell and USB interface components are usually located in the upper antenna area or the lower antenna area. Since the USB shell is a large piece of metal, the USB Antennas that are in the same antenna area before and after insertion will be affected to a certain extent, for example, the resonant frequency of the mobile phone antenna will be shifted, which will reduce the antenna efficiency in the useful frequency band

Method used

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  • Method and device for realizing antenna tuning
  • Method and device for realizing antenna tuning
  • Method and device for realizing antenna tuning

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Embodiment Construction

[0017] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0018] figure 1 It is a schematic flowchart of a method for implementing antenna tuning in an embodiment, which can be applied to terminals such as mobile phones and tablets equipped with tunable antennas and USB interfaces, such as figure 1 As shown, the method for realizing antenna tuning in this embodiment includes steps:

[0019] S11, detecting whether a USB access event occurs;

[0020] Usually, the voltage of the USB port will change before and after the USB device is connected. For example, when there is no USB device (USB data cable, USB charging cable, U disk, OTG cable, etc.) When t...

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Abstract

The invention relates to a method and a device for realizing antenna tuning. The method comprises the following steps: detecting whether a USB access event occurs or not; if yes, obtaining the current working frequency of an antenna, and a preset compensation tuning strategy which is corresponding to the current working frequency; adjusting an impedance matching network corresponding to the current working frequency according to the compensation tuning strategy, and making the offset of the antenna resonant frequency relative to the that of the resonant frequency before the USB access event in a set range under the effect of the adjusted impedance matching network. The method and the device for realizing the antenna tuning disclosed by the invention can compensate the offset of the antenna resonant frequency caused by insertion of USB to ensure a higher antenna efficiency.

Description

technical field [0001] The present invention relates to the technical field of antennas, in particular to a method for realizing antenna tuning and a device for realizing antenna tuning. Background technique [0002] With the rapid development of wireless communication technology, the mobile phone standard has changed from 2G to 3G and then to 4G. There are more and more antenna frequency bands, and the requirements for multi-frequency antennas are getting higher and higher. The demand for small-sized, multi-band antennas is getting stronger and stronger. . Tunable antenna technology can match the impedance between the transmitter and the antenna, so that the antenna has the maximum radiated power at any frequency to optimize the performance of the antenna. The main purpose of the current tunable antenna technology is to enable the antenna to cover a wider bandwidth to meet the needs of different transceiver frequencies. [0003] On the other hand, currently most of the US...

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Application Information

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IPC IPC(8): H01Q1/24H01Q5/50
CPCH01Q1/242H01Q5/50
Inventor 张福
Owner GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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