摘要
设计一种新型宽频带微带天线单元。天线采用空气介质腔,通过容性馈电贴片进行同轴线馈电,并进行边缘开槽。通过采用HFSS高频系统仿真软件仿真分析发现,适当的调整天线切口、空气腔体和馈电贴片的长宽可以调整天线的带宽和驻波比性能。以反射系数S11≤-10dB为标准,可测得天线的阻抗带宽达到50%,覆盖4～6GHz,并且通过改变馈电贴片宽度或空气腔体宽度可以实现天线的双频特性。
Anovel broadbandmicrostrip antenna element is designed. The patch is on the substrate with air cavity, excited by a capacitively fed patch which is attached by coaxial probe, and a slot is cut on the edge The analysis on HFSS shows that the broadband operation and low VSWR is obtained by adaptable dimensions of the cut slot, air cavity, and feed patch. The simulation indicates that the bandwidth is 50% at Sll≤-IOdB, covering 4-6 GHz, and dual band operation is realized by changing the width of feed patch or air cavity
出处
《通信技术》
2008年第11期47-49,共3页
Communications Technology
关键词
微带天线
容性馈电
宽频带
高增益
patch antenna
capacitive feed
broadband
high gain
