频率可重构超宽带天线  

Frequency reconfigurable UWB antenna

作　　者：陈立波[1] 谢亚楠[1] 谭子苗 王佳佳[1] 

机构地区：[1]上海大学特种光纤与光接入网省部级共建重点实验室,上海200072

出　　处：《电子测量技术》2015年第1期7-11,20,共6页Electronic Measurement Technology

摘　　要：设计了一个可重构阻带超宽带天线,它是将可重构天线技术运用到超宽带天线的设计中.该天线以印刷单极子椭圆天线为原型,为了扩展天线的阻抗带宽,在背面接地板进行适当的修改,即在地板的上面两侧开2个三角形的缺口,中间开一个矩形的缺口.超宽带天线的的阻抗带宽为2.8～11 GHz.在该椭圆天线的基础上,在馈线部分进行适当的开槽产生阻带效果,并加上2个理想开关,通过控制2个理想开关的通断,实现在3.3～3.7 GHz、5.15～5.825 GHz、8.0～8.4 GHz频段阻带可重构,理论和实际测试表面该天线能够满足超宽带天线的应用,并且能够实现可重构阻带的作用.A frequency UWB antenna with notch band reconfigurable characteristic is proposed in this paper. Technology of reconfigurable antenna is applied to UWB antenna, which is based on planar monopole antenna, Modified ground plane with two bevels on the upper edge of the ground plane and one rectangle in the middle of the ground plane are designed to extend frequency. The impedance bandwidth of the this antenna covers from 2.8-11 GHz. Based on the above antenna, two rectangle slot and two ideal switchs are loaded in the feed line, which can be notched and reconfigured in terms of band from 3.3~3. 7 GHz,5. 15~5. 825 GHz,8.0~8.4 GHz. Numerical and experimental results show that the proposed antenna is capable of working for entire UWB application and providing the reconfigurable notch bands.

关 键 词：超宽带天线 阻带 可重构 理想开关 

分 类 号：TN713.5[电子电信—电路与系统]