摘  要：本文的主要工作是應用并行FDTD方法設計Ku波段的圓極化微帶天線陣。通過時域有限差分（FDTD）方法的數值仿真，對天線的阻抗特性、方向圖、增益進行了研究。在基本原理討論的基礎上，選擇了相位相差90°開槽的圓形微帶天線貼片單元來實現圓極化。通過調節貼片的幾何參數，來滿足天線設計指標。然后通過仿真最終確定天線陣列的各個幾何參數,以此為陣元設計了一個四單元的Ku波段微帶天線陣。

關鍵詞：圓極化；FDTD；微帶天線；Ku

Design of Ku-band Circularly Polarized Microstrip Antenna Array

Wang Zheng，Li Zengrui，Yang Jianhang

(School of Information Engineering, Communication University of China, Beijing 100024, China)

Abstract:  In this paper, parallel FDTD (The Finite-Difference Time-Domain) is used to design the circularly polarized microstrip antenna array in Ku band. The impedance bandwidth, radiation patterns and gain of the proposed antenna are studied by using the Finite Difference Time Domain (FDTD) method. Based on the theoretic analysis, circular microstrip antenna patch units with 90 phase difference cuts are selected to realize the circular polarization. In order to satisfy the antenna design target, the geometric parameters of the patch element has been adjusting. And by using this element, 4 microstrip antenna array operating in Ku-band were designed.

[1]       Key words: circularly polarized; FDTD; microwave antenna; Ku

作者簡介：

王錚（1983-），男，河北承德，碩士研究生。中國電子學會學生會員。主要研究方向：電磁輻射、散射與逆散射。

 

李增瑞（1963-），男，博士，教授，博士生導師。主要研究方向：電磁輻射、散射與逆散射。

 

楊建航（1986－）  男，河南漯河，碩士研究生，主要研究方向：電磁輻射、散射與逆散射。