一种用于高功率微波应用的新型紧凑型E形宽带平面天线阵列的设计与实验

Designs and experiments of a novel compact E-shaped wideband planar antenna array for high-power microwave application.

作者信息

Xu Liang, Yuan Cheng-Wei, Zhang Qiang, Sun Yun-Fei

机构信息

The College of Advanced Interdisciplinary, National University of Defense Technology, Changsha 410073, China.

出版信息

Rev Sci Instrum. 2019 Aug;90(8):084703. doi: 10.1063/1.5110732.

DOI:10.1063/1.5110732

PMID:31472644

Abstract

A novel compact E-shaped wideband planar antenna array (CEWPA) is designed and fabricated for high-power microwave (HPM) application. The CEWPA is a kind of planar antenna and it has a lot of advantages such as low profile, wideband, high efficiency, easy to manufacture, and light weight. Compared with traditional planar antenna arrays, it overcomes the disadvantage of low power capacity through special metal structure designs. The CEWPA consists of 60 antenna elements and achieved miniaturization by an innovative array layout. In addition, it has reached a relative bandwidth of 33% (VSWR < 2) at a center frequency of 2.1 GHz in simulation and over 20% in experiment. On the other hand, the measured gain at the cold test is greater than 20 dB in the whole bandwidth while the radiation patterns are in agreement with the simulation. In addition, excited by nanosecond level pulses, the power capacity of the whole system is more than 140 MW in a high-power test.

摘要

为高功率微波（HPM）应用设计并制作了一种新型紧凑型E形宽带平面天线阵列（CEWPA）。CEWPA是一种平面天线，具有许多优点，如低剖面、宽带、高效率、易于制造和重量轻。与传统平面天线阵列相比，它通过特殊的金属结构设计克服了功率容量低的缺点。CEWPA由60个天线单元组成，并通过创新的阵列布局实现了小型化。此外，在模拟中，它在2.1 GHz中心频率处达到了33%的相对带宽（电压驻波比<2），在实验中超过了20%。另一方面，冷测试时在整个带宽内测得的增益大于20 dB，同时辐射方向图与模拟结果一致。此外，在纳秒级脉冲激励下，高功率测试中整个系统的功率容量超过140 MW。