【摘要】 采用双层结构拓展矩形微带天线带宽,利用有限积分法软件研究了寄生单元大小、以及两层贴片间的空气间隔对天线性能的影响。优化设计出的天线在电压驻波比(Voltage Standing Wave Ratio,VSWR)≤2的情况下,将原普通贴片天线4.5%的带宽提高到了23.6%,且增益在整个频带范围内达到6dB以上。该天线的工作频带完全覆盖无线局域网(Wireless Local Area Network,WLAN)的IEEE802.11a标准(5.15～5.825GHz)。实验测量结果与数值模拟结果相吻合。更多还原

【Abstract】 A double-layer broadband rectangular microstrip patch antenna is presented.The effects of size of the parasitic patch as well as the air gap between two stacked layers on the performance of the antenna are investigated using a software based on finite integral method.The bandwidth of the optimized double-layer antenna is enhanced to 23.6% with respect to the center frequency of 5.5GHz,compared to 4.5% of a conventional patch antenna.Moreover,the gain of the double-layer microstrip antenna reaches more than 6dB at the frequency range from 5.1GHz to 6.0GHz which covers the IEEE802.11a standard(5.15~5.825GHz) for WLAN.Experimental results are in agreement with the simulation results.更多还原