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Seamless metal frame antenna structure

A metal frame and antenna structure technology, applied in the structural form of radiating elements, antenna supports/mounting devices, etc., can solve problems such as large gap spacing, complex radiator wiring design, and incompatible with the development trend of miniaturization of electronic products. Achieve the effect of small space occupation and simple structure design

Inactive Publication Date: 2015-08-19
SUNWAY COMM BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the above-mentioned design of the antenna radiator in the gap between the metal frame and the dielectric plate requires a large gap spacing on the one hand, and this obviously does not conform to the development trend of miniaturization of electronic products; on the other hand, the wiring design of the radiator is complicated.

Method used

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  • Seamless metal frame antenna structure
  • Seamless metal frame antenna structure
  • Seamless metal frame antenna structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Please refer to figure 2 , a seamless metal frame antenna structure, including a seamless metal frame 2, an antenna feed point 4 and an antenna matching point 5; the seamless metal frame 2 is a complete metal shell without a slit, and a The metal device 1 is completely enclosed, and a square ring gap 6 is formed between the seamless metal frame 2 and the metal device 1; the metal device 1 can include motherboards, screens, batteries and other components, which can be regarded as a square metal block; the antenna feed point 4 and the antenna matching point 5 are arranged in the square ring slot 6, and the antenna matching point 5 includes a variable capacitance.

[0040] The seamless metal frame antenna structure also includes four metal shorting blocks 3, the four metal shorting blocks 3 are set in the square ring slit 6, two of which are set in a pair of square ring slits 6 On the corner, the other two are arranged on the side of the square ring slit, and the square ...

Embodiment 2

[0043] Please refer to image 3 The difference between this embodiment and the first embodiment is that the distance between the top edge of the metal device 1 and the metal frame 2 is greater than the distance between the side edges of the metal device 1 and the metal frame 2 . Due to the broadband and multi-frequency characteristics of the LTE antenna, the antenna feed point 4 is set by using the narrow slot on the side of the square ring slot 6, and the antenna matching point 5 is set by the wide slot on the top side, which can effectively widen the low-frequency bandwidth of the antenna.

[0044] The distance between the top edge of the metal device 1 and the metal frame 2 can be more than 7 mm, preferably more than 8 mm; the distance between the side of the metal device 1 and the metal frame 2 can be more than 1.5 mm, preferably more than 2 mm .

Embodiment 3

[0046] Please refer to Figure 4 with Figure 5 , this embodiment is a combination of Embodiment 1 and Embodiment 2. The seamless metal frame antenna structure includes four metal shorting blocks 3, which divide the square ring gap 6 between the metal device 1 and the seamless metal frame 2 into four part; at the same time, the distance between the top edge and the bottom edge of the metal device 1 and the metal frame 2 is greater than the distance between the side edges of the metal device 1 and the metal frame 2 .

[0047] Such as Image 6 Shown is the antenna return loss curve diagram obtained by simulating and optimizing the design of the antenna feed point 4 and the antenna matching point 5 in Embodiment 3 of the present invention, where the abscissa is the frequency, and the ordinate is the return loss. It can be seen that the structure of the antenna It can cover the LTE high-frequency band, but the low-frequency bandwidth is narrow and cannot be covered. At this time...

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Abstract

The present invention discloses a seamless metal frame antenna structure, which comprises a seamless metal frame (2), an antenna feeding point (4) and an antenna matching point (5). The seamless metal frame (2) is internally provided with a metal device (1). A square ring slot (6) is formed between the seamless metal frame (2) and the metal device (1). The square ring slot (6) is internally provided with the antenna feeding point (4) and the antenna matching point (5). The antenna matching point (5) comprises a variable capacitor. According to the invention, a conventional antenna radiation body is replaced by the above variable capacitor. In this way, the antenna structure occupies less space. Meanwhile, through adjusting the capacitance value of the variable capacitor, the arrangement of low-frequency resonance points can be changed to cover the LTE frequency band.

Description

technical field [0001] The invention relates to the technical field of antennas, in particular to an antenna structure using a metal frame. Background technique [0002] With the popularization of electronic products, people's pursuit of electronic products is getting higher and higher. In addition to pursuing more functions, fashionable appearance has also become a hot spot for everyone to pursue. Metal-framed phones are gaining popularity due to their stylish looks and better grip. The mobile phone uses a metal frame to make the structure stronger, but it also causes greater interference to the mobile phone antenna. [0003] In the prior art, in order to eliminate the impact of the metal frame on the performance of the mobile phone antenna, the general method is to set multiple openings on the metal frame, so that the disconnected part of the metal frame becomes a part of the antenna, which destroys the continuity of the metal frame , affecting the overall aesthetics of ...

Claims

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Application Information

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IPC IPC(8): H01Q1/36H01Q1/24
Inventor 陈劫尘郭晓娟
Owner SUNWAY COMM BEIJING
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