一种应用于卫星通信的小型双频天线设计

文章提出一种应用于卫星通信的小型化双频天线。为了实现天线的小型化和双频段工作，在圆形单极子天线上进行了削顶和矩形切割操作；为了有效扰动电流路径而进一步缩小天线尺寸、扩大天线带宽，在天线上表面和下表面又分别刻蚀了圆环槽和对称C型槽，改善天线的阻抗匹配。天线最终尺寸为16mm×18.5mm×1.6mm。利用电磁仿真软件对天线性能进行了仿真，结果表明：该天线能够在4.76GHz~9.25GHz和10.46GHz~14.2GHz两个频段内工作，最大增益为5.9dBi，平均增益为4dBi，且满足圆极化条件，具备良好的辐射特性。

Design of a miniaturized dual-frequency antenna for satellite communication

In this paper, a miniaturized dual-band antenna for satellite communication is proposed. In order to realize the miniaturization of the antenna and dual-band operation, the topping and rectangular cutting operations are carried out on the circular monopole antenna; In order to effectively disturb the current path and further reduce the size of the antenna and expand the antenna bandwidth, the torus groove and symmetrical C-slot are etched on the upper and lower surfaces of the antenna to improve the impedance matching of the antenna. The antenna final size is 16mm×18.5mm×1.6mm. The electromagnetic simulation software is used to simulate the performance of the antenna, and the results inctcate that the antenna can work in 4.76GHz~9.25GHz and 10.46GHz~14.2GHz, which the maximum gain is 5.9dBi and the average gain is 4dBi with the circular polarization and good radiation characters.