摘要
针对多频微带天线多个频点的阻抗匹配优化、频点间的相互干扰以及在辐射远场的辐射方向等问题,文中采用印刷多频单极子的天线设计方案将共面波导馈电方式和耦合馈电方式组合在一起的混合馈电方式,来优化天线的阻抗匹配.并利用加载寄生贴片和加载缝隙技术来减弱频点间的相互干扰,实现天线的多频、宽频带,全向辐射.天线的谐振频率覆盖2.42～2.82 GHz和3.4～5.85 GHz,满足WLAN/WiMAX规定工作频段要求.
Aimed at the problems in multi frequency-points impedance matching optimization for the multi-frequency mi- crostrip antenna, the mutual interference between frequency points, and the radiation direction in the radiation far field, the antenna design of printing multi-band monopole in this paper adopts mixed-feeding method with the eoplanar waveguide feeding mode and the coupled feeding mode combined to optimize antenna impedance matching. And loaded parasitic patch and loaded gap technique are used to weaken the mutual interference between the frequency points, to achieve multi-frequency, wide-band, and omni-directional radiation in antenna. The antenna resonant frequency covers 2.42 - 2.82 GHz and 3.4 - 5.85 GHz, meeting the working band requirements for WLAN / WiMAX.
出处
《应用科技》
CAS
2013年第2期18-21,共4页
Applied Science and Technology
关键词
多频天线
单极子
共面波导结构馈电
耦合馈电
缝隙加载
multi-frequency antenna
monopole
coplanar wavegnide （CPW） feeding
coupled feeding
gap load- ing technology
