Investigation on the Mutual Coupling of High-Power Dual-Branch Helical Antennas

被引：4

作者：

Liang, Yuan ^{[1
]}

Liu, Qingxiang ^{[1
]}

Wang, Bangji ^{[1
]}

Zhou, Liang ^{[2
]}

机构：

[1] Southwest Jiaotong Univ, Sch Phys Sci & Technol, Chengdu 610031, Sichuan, Peoples R China

[2] China Shipbldg Ind Corp, Res Inst 724, Nanjing 211153, Jiangsu, Peoples R China

来源：

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2019年 / 67卷 / 06期

关键词：

Antenna array; electric field; helical antenna; mutual coupling; power capacity; ARRAY; SCATTERING;

D O I：

10.1109/TAP.2019.2905735

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The mutual coupling in high-power dual-branch helical antennas (DBHAs) is investigated, with the purpose of improving the power capacity of high-power antenna arrays further. Unlike common measures, the maximum E-field difference between a single antenna element and its array is proposed to evaluate the strength of mutual coupling. This measure is suitable for high-power antenna arrays and validated by comparing with other indexes, such as S-parameter, gain, and axial ratio. Because high-frequency current and the E-field are closely related, the full-wave method is used to calculate the current amplitude distribution over a single helical antenna and the scattering E-field of an antenna array. Since the antenna elements mutually coupled through the air, several approaches are discussed for suppressing the mutual coupling. It is verified that using cavity not only isolates the antenna elements well but it is also with high power capacity. The results indicate that each antenna element is able to handle high pulsed power. Besides, it could be seen that the decrease in mutual coupling is helpful for improving the power capacity.

引用

页码：3641 / 3648

页数：8

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