An antenna system for improving the performance of diversity antennas
A technology of diversity antenna and antenna system, applied in the field of communication, can solve the problem of reducing the radiation efficiency of the antenna
Pending Publication Date: 2018-12-25
昆山亿趣信息技术研究院有限公司
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- Abstract
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Problems solved by technology
In the prior art, the feed point of the antenna is directly connected to the metal frame, and then switched through the position switch to realize the resonance switching between low frequency and intermediate frequency. In this way, the antenna radiation efficiency of switching the resonance frequency band will be greatly reduced.
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Embodiment
[0020] Please refer to figure 1 , the present embodiment is an antenna system 100 for improving the performance of a diversity antenna, which includes a left metal frame 1, a right metal frame 2, and an upper metal frame 3 connected together, and the upper part of the left metal frame 1 is provided with a first opening 4 And it is divided into left upper branch 5 and left lower branch 6 by this opening, the end of left lower branch 6 close to the first opening 4 is provided with the first grounding point 7, and the upper end metal frame 3 is provided with the second grounding point 8, the first An isolation site 9, a second isolation site 10, and a third grounding site 11, the upper part of the right side metal frame 2 is provided with a second opening 12 and is divided into a right upper branch 13 and a right lower branch 14 by the opening, and the right lower branch 14 is close to One end of the second opening 12 is provided with a fourth grounding point 15, and a coupling m...
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Abstract
The invention discloses an antenna system for improving the performance of diversity antennas, which includes a left metal frame, a right metal frame and an upper end metal frame, an upper portion ofthe left metal frame is provided with a first opening and is divided into an upper left branch and a lower left branch by the opening, the upper end of the lower left branch is provided with a first ground point, the upper end metal frame is sequentially provided with a second ground point, a first isolation site, a second isolation point and a third ground point from left to right, an upper portion of the right metal frame is provided with a second opening and is divided into an upper right branch and a lower right branch by the opening, the upper end of the lower right branch is provided with a fourth ground point, a coupling metal strip parallel to the upper end metal frame is arranged at a distance of 1 to 2 mm from that low edge of the upper end metal frame, the right end of the coupling metal strip is 1-2mm from the upper right branch, the right end of the coupling metal strip is provided with a feeding point, and the position 20-25mm from the right metal frame of the upper end metal frame is grounded through an SP4T switch to form a switching point. The antenna radiation efficiency of the switching resonant frequency band of the invention is high.
Description
【Technical field】 [0001] The invention belongs to the technical field of communication, and in particular relates to an antenna system for improving the performance of diversity antennas. 【Background technique】 [0002] Coupling feeding is a non-contact feeding method that emerged in the 1980s. It is mainly divided into two methods: aperture coupling feeding and proximity coupling feeding. Coupling feed has the characteristics of conveniently adjusting input impedance and expanding antenna bandwidth. Under the current trend of antenna development towards miniaturization and broadband, coupled feeding is gradually becoming a popular feeding method. [0003] In the antenna system of a mobile phone with a full metal frame, the metal frame is usually cut off to make a part of it serve as an antenna radiator to improve antenna performance. In the prior art, the feed point of the antenna is directly connected to the metal frame, and then switched by a position switch to realize t...
Claims
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Patent Timeline
Login to View More IPC IPC(8): H01Q1/36H01Q1/44H01Q1/48H01Q1/52H01Q5/10H01Q5/28H01Q5/328H01Q1/24
CPCH01Q1/242H01Q1/36H01Q1/44H01Q1/48H01Q1/521H01Q5/10H01Q5/28H01Q5/328
Inventor 冯军袁涛王洪洋王松钱可伟胡发波杨平
Owner 昆山亿趣信息技术研究院有限公司