期刊
INTERNATIONAL JOURNAL OF MICROWAVE AND WIRELESS TECHNOLOGIES
卷 11, 期 1, 页码 41-52出版社
CAMBRIDGE UNIV PRESS
DOI: 10.1017/S1759078718001113
关键词
Balun; dual-polarized antenna; radiation pattern; Vivaldi antenna
资金
- National Natural Science Foundation of China [61571154]
- Science Foundation of Aeronautics of China [20160177005]
The paper researches a kind of wideband dual-polarized Vivaldi antenna with improved balun feed which consists of slot line and two bent coplanar strip lines. The whole of antenna structure is composed of two orthogonal Vivaldi antenna elements, and the mode of feeding adopts electromagnetic coupling from micro-strip line to slot line. The improved balun can avoid the intersection of transmission lines, reduce the size, and simplify the assembly. The electromagnetic simulation and optimization design of proposed antenna are carried out by using electromagnetic simulation software, CST. Simulation results show that the isolation between two polarized ports is more than 15 dB within working frequency range of 2-3.5 GHz and VSWRs of two ports are lower than 2.5 at the range of 2-3.5 GHz. The designed antenna is fabricated and measured. The measured results indicate that the designed antenna achieves anticipated patterns and feasible design of the dual-polarized Vivaldi antenna. The dual-polarized Vivaldi antenna with improved balun feed is suitable for some application fields, such as passive electronic reconnaissance, passive radar, and wideband communication and detection.
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