摘要
设计了一种高增益、高极化隔离度、宽频带的L探针耦合馈电E形微带天线。通过在矩形贴片上加载两条平行窄缝，改变贴片表面电流分布，形成双峰谐振回路特性，以获得宽频带特性；采用L形探针对E形贴片进行耦合馈电，避免了普通探针馈电引入附加电感的缺陷，从而提高天线的辐射效率。对提出的天线进行仿真设计及优化，实现了29．2％的阻抗带宽（VSWR≤2），带宽内增益不低于8．5dBi，平均增益达到9．4dBi，平均交叉极化隔离度达到～64dB。
A L-probe fed broadband E-shaped microstrip antenna is presented in this paper with high gain and high cross-polarized isolation. Two parallel slots are incorporated into the patch of a rectangular mi- crostrip to expand the bandwidth by changing the current distribution. The proposed antenna is fed by L shaped probe for avoiding additional inductance with high radiant efficiency. With optimized design of the proposed antenna, the relative bandwidth （VSWR≤2） of 29.2% is achieved, while the gain at the bandwidth is larger than 8.5dBi, average gain is 9.4dBi and the average cross-polarized isolation is less than -64dB.
出处
《通信对抗》
2011年第3期47-51,共5页
Communication Countermeasures
关键词
高增益
高极化隔离度
宽频带
L探针馈电
E形微带天线
high gain
high cross-polarized isolation
wide band
L-probe fed
E-shaped microstrip antenna
