介质支撑型单极子开关寄生阵列天线设计  

Design of dielectric-supported switched parasitic antenna array for mobile wireless communications

作　　者：孙佳文[1] 陈文华[1] 冯正和[1] 

机构地区：[1]清华大学电子系,北京100084

出　　处：《电波科学学报》2010年第2期209-215,共7页Chinese Journal of Radio Science

基　　金：国家自然科学基金资助项目(60771009)

摘　　要：提出了一种能应用于无线通讯系统的新型的开关寄生阵列天线。由于采用介质支撑单极子结构,天线具有非常紧凑的结构并且非常牢靠。控制电路上的开关和单片机用来控制主波束的指向,通过改变寄生单元所接射频开关的状态,天线就可以实现主波束的扫描。设计了一个工作于WLAN频段的实验模型验证了天线的性能,试验结果表明:该天线可以方便地实现波束扫描。A novel dielectric-supported switched parasitic antenna array is developed and studied for mobile communication.Due to the introduction of supporting dielectric,the antenna array has compact structure and can not be easily broken.By changing states of loaded RF switches,antenna array can implement the function of main beam scanning.Switches and micro controller unit（MCU）on the control circuit are used to control the directivity of main beam.Trial model is fabricated to validate the antenna performance and experimental results indicate that beam scanning can be easily achieved.

关 键 词：寄生 开关 波束扫描 

分 类 号：TN820[电子电信—信息与通信工程]