小型化陷波超宽带天线的研究与设计  

Design of compact ultra-wideband antenna with a notched band

作　　者：李明[1] 李迎松[1] 杨晓冬[1] 陈炳才[1] 

机构地区：[1]哈尔滨工程大学信息与通信工程学院,黑龙江哈尔滨150001

出　　处：《应用科技》2011年第9期28-31,共4页Applied Science and Technology

基　　金：国家自然科学基金资助项目(60902014)

摘　　要：设计了一种具有陷波特性的超宽带天线,天线的阻抗带宽为118.8%.所设计的天线印刷在尺寸为30 mm×34 mm×1.5 mm,介电常数为3.5的介质基板上.通过在接地板上刻蚀"工"字形槽,有效地展宽天线的带宽,使其满足超宽带通信(UWB)系统(3.1～10.6 GHz)的通信需求.同时为了实现该天线与无线局域网(WLAN)系统的协同工作,利用微波开路微带线技术产生陷波,从而避免WLAN对UWB通信的干扰.采用高频结构仿真软件HFSS对影响天线性能的关键参数进行设计、仿真、分析和优化,从而得到天线的最佳尺寸.实验结果表明,该天线在小型化的同时实现了宽带和陷波的要求,从而证明了设计方法的可行性和有效性.An uhra-wideband antenna with a notched band characteristic, which has a bandwidth of 118.8%, is presented. The proposed antenna is printed on a 30 mm ×34 mm × 1.5 mm substrate, which has a relative dielectric constant 3.5. In order to broaden the bandwidth of the proposed antenna, an ＂H＂-shaped slot was cut in the ground plane to meet the 3.1 to 10.6 GHz uhra-wideband （UWB） requirement. In addition, a microstrip stub is employed to produce a notch band to meet the cooperation communication between UWB and WLAN. The notch band reduces the potential interference between the two systems. The high frequency structure simulator （HFSS） is also used to design, simulate, analyze and optimize the proposed antenna, and thereby the optimized dimensions of the antenna are obtained by using HFSS. It can be seen from the results that the proposed compact antenna can satisfy the requirements of wideband and notch band, which helps to verify the effectiveness and feasibility of the design.

关 键 词：超宽带(UWB)天线 陷波特性 HFSS仿真 无线局域网 

分 类 号：TP242[自动化与计算机技术—检测技术与自动化装置]