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提出了一种结构紧凑的印刷引向天线,采用平衡微带线-槽线馈电,充分利用了空间,以减小馈电网络面积和天线尺寸。使用电磁仿真软件CST Microwave Studio对天线的结构参数进行了优化设计,并根据仿真所得到的电流结果对天线的宽带特性和定向辐射特性进行了解释。测试结果表明,该天线在1.88～3.06GHz的频带内反射系数低于-10dB,相对带宽达到了47.3%。在工作频段内增益为4.0～6.3dBi,天线总体尺寸为0.34λ0×0.58λ0,其宽频带可以用于PCS/UMTS/WLAN等多个领域,而简单的结构和较小的尺寸对于组成阵列也是有益的。
A compact printed lead antenna is proposed. Balanced microstrip - slot feed is used to make full use of space to reduce the size of feed network and antenna. The structural parameters of the antenna are optimized by using electromagnetic simulation software CST Microwave Studio, and the broadband characteristics and directional radiation characteristics of the antenna are explained based on the simulation results. The test results show that the reflection coefficient of the antenna in the band of 1.88 ~ 3.06GHz is lower than -10dB and the relative bandwidth reaches 47.3%. In the operating band gain of 4.0 ~ 6.3dBi, the overall antenna size of 0.34λ0 × 0.58λ0, its wide band can be used for PCS / UMTS / WLAN and other fields, and the simple structure and smaller size for the array is also benefit.