广东工业大学学报 ›› 2014, Vol. 31 ›› Issue (1): 90-94.doi: 10.3969/j.issn.1007-7162.2014.01.018

• 综合研究 • 上一篇    下一篇

一款共面可覆盖WLAN及WiMAX频段的三频笔记本电脑天线的设计

栗建豪,吴多龙,吴艳杰,黎宇彪   

  1. 广东工业大学 物理与光电工程学院,广东 广州 510006
  • 收稿日期:2013-07-03 出版日期:2014-03-29 发布日期:2014-03-29
  • 作者简介:栗建豪(1983-),男,硕士研究生,主要研究方向为射频与天线技术.
  • 基金资助:

    广东省重大科技专项资助项目(2009A080207006);广州市天河区科技计划项目(201201YH019)

Design of a Tri-band Coplanar Notebook Antenna for WLAN/WiMAX Frequency Bands Application

Li Jian-hao,Wu Duo-long, Wu Yan-jie, Li Yu-biao   

  1. School of Physics and Optoelectronic Engineering, Guangdong University of Technology, Guangzhou 510006, China
  • Received:2013-07-03 Online:2014-03-29 Published:2014-03-29

摘要: 采用软件设计和实验相结合的方法,设计了一款紧凑型、共平面、能覆盖2.4/5.2/5.8 GHz WLAN和2.5/3.5/5.5 GHz WiMAX工作频段的笔记本电脑天线.该天线采用耦合馈电方式,通过调节矩形辐射面和L形结构尺寸以及耦合缝隙的大小来产生2.5 GHz和5.5 GHz的谐振频率;通过在L形辐射表面开一个U形缝隙来实现3.5 GHz处的谐振点,该U形槽的长度大约为4 GHz谐振点处的1/4SymbollAp;其整个天线的面积只有7.5 mm×17.5 mm(不包括笔记本电脑天线的地板).在设计中通过调节矩形耦合辐射体与L形辐射面的间距可以有效地调节各谐振点的强度,还可以实现天线输入输出的阻抗匹配.当被嵌入在支撑笔记本电脑显示屏地板的顶端时,天线能很好地满足WLAN和WiMAX的所有工作频带并具有良好的辐射特性,经过软件优化和对实物的测试,测试结果和仿真结果吻合良好.

关键词: 多频段;小型化;笔记本电脑天线;耦合天线;WLAN;WiMAX

Abstract: Using simulation and experiment methods, a compact, coplanar, and cover all the operating bands of 2.4/5.2/5.8/GHz WLAN and 2.5/3.5/5.5GHz WiMAX systems of laptop antenna were designed. The antenna adopts coupling feed mode, by adjusting the size of the rectangular radiating surface and L-typed structure, and the dimension of the slotcoupling to arouse the resonant frequency of 25GHz and 55GHz; through cutting a U-shaped slit in the L-type radiation surface to achieve the resonance point of 3.5GHz, the length of the U-shaped is 1/4λ at the resonance point of about 4GHz. The antenna shows an entire area is only 7.5 mm× 17.5 mm (not including the system ground plane). In the procedure of design, through changing the gaps between the rectangular and L-shaped radiator can adjust the strength of the resonance point, but also realize the matching of input and output impedance. When mounted at the top edge of the display panel in the laptops, three wide operating bands for covering all the desired operating bands of WLAN/WiMAX systems are obtained and the antenna has a good radiation characteristics. The optimizations by using the simulator software Ansoft HFSS were performed, and an actual model has been prototyped for experimental measurements, the measured and simulated results are in good agreement.

Key words: multi-band; miniaturization; laptop antennas; coupling antennas; WLAN; WiMAX

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