一种新型的高增益低剖面天线  

A Novel Low-Profile High-Gain Antenna

作　　者：杨奋华[1] 汤炜[1] 

机构地区：[1]华侨大学信息科学与工程学院,福建厦门361021

出　　处：《通信技术》2013年第1期29-31,共3页Communications Technology

基　　金：福建省自然科学基金(No.2011J01351);中央高校基本科研业务费专项资助项目(No.JB-ZR1144)

摘　　要：为了解决传统天线低增益、窄频带和大尺寸的问题,提出了一种新型的高增益低剖面天线。该天线采用人工磁导体(AMC)作为反射面,具体结构是将双面印刷蝶形天线作为辐射天线悬置在5×7梅花单元反射面上。经优化,该天线的中心频率为2.58 GHz,相对带宽为11.63%,覆盖了LTE(长期演进)中的2 500～2 690 MHz频段,且天线的总体高度仅为9.5 mm,相当于自由空间波长的1/12。此外,该天线的峰值增益达到9.7 dBi,证实了新型天线的可行性。A novel antenna with low profile and high gain is proposed, thus to solve the low-gain and narrow-band problems of conventional antenna. The antenna adopts an AMC （artificial magnetic conductor） ground plane as its reflecting surface, and the traditional printed bow-tie antenna is oriented horizontally over the AMC surface consisted of 5 × 7 square plum-shaped patches unit. The optimized antenna, with a center frequency of 3.85GHz and a relative bandwidth of 11.63%, covers the LIE （Long Term Evolution） range from 2. SGHz to 2.69GHz. Moreover, the composite antenna has an overall height of 9.5mm, one-twelfth of the wavelength at the center frequency. In addition, the peak gain of the composite antenna is close to 9. TdBi, and this confirms the feasibility of this new antenna.

关 键 词：人工磁导体 低剖面天线 梅花形 蝶形天线 

分 类 号：TN823.27[电子电信—信息与通信工程]