一种小型WLAN双频天线的设计

摘要

In order to adapt to the requirements of the wireless LAN( WLAN) communication technology, the design of a simultaneously high and low dual - band miniaturized antenna, and omnidirectional radiation performance is needed in the working band. This paper presented the design of a miniaturized WLAN dual - frequency antenna to resolve those problems. The antenna structure was composed of two rectangular patches and an inverted cone patch. To gain dual - band effects, a ring gap wa opened in the middle of the antenna radiating patch. Compared with the conventional dual -frequency micro - strip patch antenna, the antenna size can be greatly reduced. Both simulated and measured results show that the antenna has achieved the design requirements, verified the effectiveness and feasibility of the design method, and it has a very good application potential.%为了适应无线局域网(WLAN)通信技术的要求,需要设计一种能够同时在高、低两个频段工作的小型天线,并且在工作频段内具有全向辐射性能.针对上述问题,设计了一副小型化WLAN双频天线.天线的辐射结构是由两个矩形贴片和一个倒锥形贴片组合形成,通过在天线辐射贴片中间加载一个圆环缝隙,从而实现了双频效果.和常规的双频微带贴片天线相比,天线的尺寸可以大大减小.仿真和实测结果表明,改进的天线单元达到了设计要求,验证了设计方法的有效性和可行性,具有十分良好的应用潜质.