Analysis and design of sea-water monopole Yagi-Uda antenna with pattern reconfigurability

作者：Wang, Shiyan; Hu, Zhenxin; Wang, Wenwei; Qi, Shishan^*; Wu, Wen

来源：International Journal of RF and Microwave Computer-Aided Engineering, 2018, 28(8): e21399.

DOI：10.1002/mmce.21399

• monopole Yagi-Uda antenna
• pattern reconfigurability
• sea water

In this article, a theoretical study of sea-water monopole Yagi-Uda antenna is presented. Unlike the conventional metal one, sea-water monopole is here treated as imperfect conductor. Based on this precondition, a methodology for analyzing sea-water monopole Yagi-Uda antenna is proposed by employing the 3-term theory and voltage-current relation. As such, both its input impedance and radiation pattern can be theoretically predicted. Commercial software packages ANSYS HFSS and CST Microwave Studio are used to verify the proposed methodology. Finally, a prototype is designed, fabricated, and tested. Due to the liquidity of sea water, the parasitic element can work as a director or reflector by altering its height to achieve pattern reconfigurability. Measured results show reasonably good agreement with the simulated and theoretical ones.

• 出版日期2018-10
• 单位南京理工大学