一种适用于定频波束扫描微带漏波天线小型化的仿真研究  

The Simulation Study on the Minimization for Frequency-fixed Beam-scanning Microstrip Leaky-wave Antenna

作　　者：郭铭承[1] 刘菊华[1] 龙云亮[1] 蒋鸿雁[1] 

机构地区：[1]中山大学电子与通信工程系,广东广州510275

出　　处：《中山大学学报（自然科学版）》2009年第2期41-44,共4页Acta Scientiarum Naturalium Universitatis Sunyatseni

基　　金：国家自然科学基金资助项目(60571036)

摘　　要：提出了一种新型的双层介质基板的微带漏波天线结构。通过在接地板开缝隙把上层的微带漏波天线的部分能量耦合到背面的微带天线阵,可以有效地减小微带漏波天线开口端反射回来的能量,抑制微带漏波天线的反射波瓣;充分利用了上层微带漏波天线和背面微带天线阵的辐射,实现了在H面上下空间两个波束的扫描,并把上半空间微带漏波天线的旁瓣电平,和下半空间微带天线阵的旁瓣电平都抑制到-8dB以下。A novel microstrip leaky-wave antenna with two layers of substrate has been developed. Through the slot-aperture in the ground plane, part of energy of the microstrip leaky-wave antenna above the ground plane is coupled to the microstrip antenna array on the backside of the ground plane. The refleeted energy from the open terminal of the microstrip leaky-wave antenna decreases and the side lobes of the mierostrip leaky-wave is suppressed. Two scanned beams, in the above half-space and backside half- space, are gained from the antennas above and under the ground plane. The side-lobes of the antennas on the above half-space and back-side half-space are suppressed below -8dB.

关 键 词：微带漏波天线 小型化 定频波束可调 

分 类 号：TN820.1[电子电信—信息与通信工程]