米波雷达,尤其是高机动米波双极化雷达,在地面防空系统中担任着重要角色。由于工作频率低、波长长,致使米波雷达天线阵列结构尺寸庞大笨重。兼顾实现良好的多功能电性能以及轻便、高机动性的阵列结构致使天线设计面临很大困难和挑战。为了解决天线阵面大工作口径与小运输口径需求之间的矛盾,文中以实现高机动天线阵列为目标,针对天线选型和可折叠结构设计展开了具体论述,提出并设计一种新型可折叠结构的宽带米波双极化相控阵天线单元,该设计方案切实可行,经过实物验证,具备良好电扫性能和高机动性结构特性,为大口径高机动米波双极化雷达的工程化设计奠定了技术基础。

Meter-wave radar, especially the high-mobility meter-wave dual-polarization radar, plays a significant role in the development of ground-based air defense system. Due to the factors such as low frequency and long wavelength, the meter-wave radar suffers from large antenna size and bulky volume. The design of such antenna has encountered great difficulties and challenges to achieve both excellent multi-functional radiation quality and portable, high-mobility structure. To resolve the contradiction between the need of large working aperture and compact transporting aperture, this paper starts from the discussion about the selection and foldable design of antenna unit in detail, then a new design strategy for wide-band meter-wave dual-polarization phased array antenna is proposed, aiming at realizing high-mobility array. The proposed antenna is fabricated and experimentally verified. The measured results show that the proposed antenna features excellent scanning performance and high-mobility structure, which lays a technical foundation for the engineering design of large-aperture high-mobility meter-wave dual-polarization radar.

TN821