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提出一种新型的多边形结构宽带微带天线。此天线拥有体积小、剖面低、重量轻、结构简单等。采用ansoft公司的基于时域有限差分法(FDTD)的HFSS12电磁仿真软件对该天线进行了仿真。从仿真结果上看,该微带天线的中心频率10GHz,S11≤-10dB时的相对带宽147%(3.0GHz～20.0GHz),可以有效的覆盖到S、C、X、Ku各个波段以及3GHz到6GHz各个移动通信频段,也可用于各种无线局域网等场合。该天线的平均增益3dB,最高增益达到5dB。
A new type of polygonal structure broadband microstrip antenna is proposed. This antenna has a small size, low profile, light weight, simple structure and so on. The antenna was simulated by Ansoft’s HFSS12 electromagnetic simulation software based on the finite-difference time domain (FDTD) method. From the simulation results, the microstrip antenna’s center frequency of 10GHz, S11 ≤ -10dB when the relative bandwidth of 147% (3.0GHz ~ 20.0GHz), can effectively cover the S, C, X, Ku each band and 3GHz to 6GHz each mobile communications band, can also be used for a variety of wireless LAN and other occasions. The antenna’s average gain 3dB, the maximum gain of 5dB.