惠更斯源电小天线研究

Huygens source electrically small antennas

惠更斯源天线因其独特的设计方式具有宽波束和高方向性的巨大优势,但同时也面临着各种设计和加工上的难题.文中基于国内外电小惠更斯源天线的发展现状,综合介绍了几款高性能的电小惠更斯源天线设计方法与技术.在超高频(super high frequency,SHF)段,介绍了一款基于平面集成技术的惠更斯源电小天线(electrically-small antenna,ESA),可实现线极化和圆极化设计.在特高频(extra-high frequency,UHF),介绍了惠更斯源ESA的双极化、可重构和宽带设计方案,可分别实现惠更斯源ESA的高隔离、水平全空间波束覆盖和宽阻抗带宽功能.这些天线设计方案为追求ESA的高方向性、宽带化和多功能化提供了新颖而可靠的设计思路与方法.

Huygens source antennas hold the merits of wide beamwidth and high directivity due to their unique operational mechanism. However, it meets with a certain problems in the design and fabrica- tion process. Based on the current development of Huygens source electrically small antennas （ESAs）, several cases with high performances are introduced in this paper. In super high frequency （SHF） band, the Huygens source ESAs operating in the linear and circular polarization behaviors using planar integra- tion technology are proposed. In ultra high frequency（UHF） band, several Huygens source ESAs with du- al-polarized, pattern-reconfigurable and wideband performance characteristics are introduced, respectively. In details, the high-isolation between ports is realized in the dual-polarized design, the entire azimuthal plane coverage is achieved in the pattern-reconfigurable design, and the operational bandwidth is signifi- cantly improved in the non-Foster design, respectively. These introduced Huygens source ESA design par- adigms are hoped to provide a certain new and reliable design principles and methods for ESAs with an aim to pursue high directivity, wide bandwidth and multi-functions.