高效率宽带混合液体天线研究

Liquid antennas are a special type of antennas using liquid as radiating elements. According to the liquid properties, Liquid antennas can be divided into two kinds - conductor antennas with conductor properties and dielectric resonator antennas with dielectric properties. Compared with traditional solid antennas, liquid antennas have unique features and advantages such as high plasticity, compact sizes, reconfigurability, small RCS (radar cross section), good fusing capabilities, low cost, aesthetic. Liquid antennas have broken the concepts of traditional solid antennas, opening up a new field for antenna theory and application. However, they have drawbacks of low efficiencies, narrow bandwidth and poor temperature characteristics. This project is to explore the key theory and technology which is to solve the basic problems of liquid antennas, establish the basic theory, the design methods and implementation technology for achieving high efficiency and wideband liquid antennas, rich antenna theory and design，push the liquid antenna in the application and development in wireless communication. Research Contents including: (1) the research on high efficiencies liquid antennas base on hybrid liquids; (2) the research on high efficiencies liquid antennas based on hybrid structures; (3) the research on wideband liquid antennas based on hybrid structures; (4) the research on new liquid antennas applying in the wireless communication system.

所谓液体天线是指以液体为辐射单元的天线。根据液体属性的不同, 液体天线可以分为具有导体特性的导体天线和具有介质特性的介质谐振器天线。与传统固体天线相比，液体天线有着独有的特性和优势：可塑性强、尺寸小、易于可重构、雷达散射截面低、融合性好、成本低和美观等。液体天线的出现，打破了传统固体天线的概念，为天线理论和应用开辟了一片新天地，也为无线通信天线所遇到的难以逾越的瓶颈提供了潜在的解决方案。但是，液体天线同时存在着效率低、带宽窄和温度特性差的缺点。本项目探索解决液体天线基础问题的关键理论和技术，建立实现高效率、宽频带液体天线的理论基础、设计方法和实现技术，丰富天线的理论与设计，推动液体天线在无线通信中的应用与发展。研究内容包括：（1）基于混合液体的高效率液体天线研究；（2）基于混合结构的高效率液体天线研究；（3）基于混合结构的宽带液体天线研究；（4）应用于无线通信系统的新型液体天线的研究

课题组已完成项目计划书中的研究内容，达到项目研究目标。研究成果包括：通过探索解决了液体天线中一些基础理论问题和关键技术，建立实现高效率、宽频带液体天线的理论基础、构建设计方法和实现技术，丰富了天线的理论与设计，推动了液体天线在无线通信中的应用与发展。同时，在项目经费的支持下，课题组对宽带双极化基站天线和北斗宽带圆极化天线进行了新的探索。目前，已发表学术论文52篇，其中期刊文章33篇、会议文章19篇、SCI检索31篇、EI检索16篇，并均已标注基金支助。已申请发明专利6件，已获授权发明专利1件。已培养博士生3人，硕士生6人。共实现18款高效率、宽带液体天线的设计，达到预期研究成果。