Method for solving electromagnetic compatibility of antennae of mobile phone

An electromagnetic compatibility, mobile phone antenna technology, applied in the direction of resonant antenna, antenna support/installation device, slender active unit end feed, etc., to achieve the effect of reducing the volume

Inactive Publication Date: 2011-07-13
HUIZHOU SPEED WIRELESS TECH CO LTD
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  • Abstract
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Problems solved by technology

[0006] However, when encountering the index requirements of well-known internationa

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  • Method for solving electromagnetic compatibility of antennae of mobile phone
  • Method for solving electromagnetic compatibility of antennae of mobile phone

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Embodiment Construction

[0017] In order to facilitate the understanding of those skilled in the art, the structural principle of the present invention will be further described in detail below in conjunction with specific embodiments and accompanying drawings:

[0018] Such as figure 1 As shown, a method to solve the electromagnetic compatibility of mobile phone antennas. It selects the monopole antenna as the antenna of the small terminal mobile phone, the monopole antenna is connected with the antenna matching circuit, and a metal frame 2 is installed in the front shell 1 of the mobile phone, which can be placed at the four corners A or B or C or D of the metal frame respectively. opening, or connect the metal frame to the grounding area of ​​the PCB main board with conductive cloth or conductive foam.

[0019] The main principle of the invention is to use the metal frame to disperse the current of the PCB main board of the mobile phone, so that the current distribution is uniform, avoiding curre...

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Abstract

The invention discloses a method for solving electromagnetic compatibility of an antennae of a mobile phone, a monopole antenna is selected as the antenna of a small-sized terminal mobile phone; the monopole antenna is connected with an antenna matching circuit; a metal frame is arranged in the front casing of the mobile phone; the metal frame is provided with an opening; or the metal frame is connected with an earthing region of a printed circuit board (PCB) mainboard by utilizing conductive fabric and electric vesicant cotton. In the method provided by the invention, the metal frame is utilized to disperse the current of PCB mainboard of the mobile phone, so as to lead the current to be distributed evenly; and the current accumulation is avoided; the peak value generated in a synthetic aperture radar test is lowered, thereby solving the requirements of the over the air (OAT) of the far-field radiation, and satisfying the SAR requirement of the near-field radiation. By using the method provided by the invention, the antenna volume can be smaller on the premise of satisfying the electromagnetic compatibility, and the specification requirements of SAR and OTA test are satisfied.

Description

technical field [0001] The invention relates to a small terminal mobile phone, in particular to an electromagnetic compatibility method for mobile phone antennas. Background technique [0002] With the development of information technology, while enjoying various conveniences brought by wireless communication equipment, the public is increasingly concerned about the impact of electromagnetic radiation from wireless communication terminals on human health. Wireless communication equipment cell phones often use common printed circuit antenna form or monopole antenna. This type of antenna can meet the ordinary OTA (Over The Air) requirements, but it can hardly meet the electromagnetic compatibility index - SAR (Specific Absorption Rate). This is also the bottleneck in the development of small terminal antennas. SAR means that under the action of an external electromagnetic field, an induced electromagnetic field will be generated in the human body. Since various organs of th...

Claims

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Application Information

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IPC IPC(8): H04M1/02H04B1/18H01Q1/24H01Q9/30
Inventor 张如亮吴荻
Owner HUIZHOU SPEED WIRELESS TECH CO LTD
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