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Wideband low-specific absorption rate (SAR) wireless terminal antenna system

A wireless terminal and antenna system technology, applied in the direction of antenna support/installation device, radiation element structure, etc., can solve the problems of increasing difficulty, affecting antenna performance, reducing the total radiation power of antenna, etc., achieving wide resonance frequency, low The effect of SAR

Inactive Publication Date: 2012-11-07
SHANGHAI AMPHENOL AIRWAVE COMM ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the former will reduce the total radiation power of the antenna, which is not conducive to signal transmission
The latter often reduces the radiation efficiency of the antenna, also affects the performance of the antenna, and increases the complexity of the st

Method used

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  • Wideband low-specific absorption rate (SAR) wireless terminal antenna system
  • Wideband low-specific absorption rate (SAR) wireless terminal antenna system
  • Wideband low-specific absorption rate (SAR) wireless terminal antenna system

Examples

Experimental program
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Embodiment

[0035] The schematic diagram of the antenna system is shown as figure 1 shown. refer to figure 1 , the antenna system includes a PCB (Printed circuit board) board (metal area) 100 of the handheld terminal, a clearance area (non-metal area) 101, an antenna 200, an antenna bracket (not shown in the figure) and a floating metal sheet 301 .

[0036] The antenna 200 covers the outer surface of the antenna support, and the floating metal sheet 301 covers the inner surface of the antenna support. In this embodiment, the floating metal sheet 301 is a metal piece. Here, only one piece of metal sheet is used. In practice, multiple metal sheets can be used, which follow the same position setting as the metal sheet 301 of this embodiment below. method can also achieve the same purpose.

[0037] In the PCB100 part, it is a metal area with a certain shape, that is, it is limited relative to the antenna. The metal area can be a regular strip, or a strip of metal with special-shaped cuts,...

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Abstract

The invention discloses a wideband low-specific absorption rate (SAR) wireless terminal antenna system. The wideband low-SAR wireless terminal antenna system comprises a printed circuit board (PCB), an antenna bracket, an antenna and a metal piece, wherein the antenna bracket is arranged on the PCB; the antenna covers the outer surface of the antenna bracket; the metal piece covers the inner surface of the antenna bracket; the antenna comprises a main body and two ends; at least one end of the antenna has a bending structure, and a certain gap is formed between the bending structure and the main body; a projection of the metal piece on the inner surface of the antenna bracket at least covers part of the gap; and the metal piece is used for improving capacitance between the bending structure and the main body, so an electric field of the gap between the bending structure and the main body is reduced, and an SAR value is decreased. Compared with the prior art, the wideband low-SAR wireless terminal antenna system is wide in resonant frequency, low in SAR, simple in structure and easy to implement.

Description

technical field [0001] The invention relates to a wireless terminal antenna, in particular to a broadband low SAR wireless terminal antenna system. [0002] Background technique [0003] An antenna is a device that uses frequency characteristics to receive and transmit signals. In recent years, the design and performance of mobile terminal antennas for wireless communication have more and more influence on the development direction of mobile communication. Especially portable mobile terminals such as mobile phones, PDA (Personal Digital Assistance), MP3 / MP4. The main indicators of the antenna design are: there is a suitable multi-frequency resonance, and the antenna realizes signal propagation and energy radiation based on the resonance of a certain frequency. If an antenna can resonate at multiple frequencies, then the antenna will work at multiple frequencies. On the other hand, in the evaluation of the antenna performance of the handheld terminal, the radiation of the...

Claims

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Application Information

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IPC IPC(8): H01Q1/22H01Q1/36
Inventor 孙劲褚少杰
Owner SHANGHAI AMPHENOL AIRWAVE COMM ELECTRONICS
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