一种使用高次模式阻抗匹配的三频频率可重构天线设计  

Design of a Triple-frequency Reconfigurable Antenna Using Higher-order Mode Impedance Matching

作　　者：王晓燕 张霄 罗宇 WANG Xiaoyan;ZHANG Xiao;LUO Yu(Shcool of Microelectronics,Tianjin University,Tianjin 300072,China;School of Mechanical Engineering,Tianjin University,Tianjin 300072,China)

机构地区：[1]天津大学微电子学院,天津300072 [2]天津大学机械工程学院,天津300072

出　　处：《微波学报》2024年第3期7-11,共5页Journal of Microwaves

基　　金：国家自然科学基金(62101380)。

摘　　要：传统的频率可重构天线多采用电控可变元件构造馈电网络,导致设计和加工复杂。此外,电子元件的使用降低了辐射效率,使得性能不稳定。本文提出了一种采用高次模式进行阻抗匹配的机械调谐频率可重构天线。为使用固定的馈电网络进行阻抗匹配,并且不添加任何电控可变元件,该天线在两个低频频段工作于三次模以增加输入阻抗。这一设计增加了性能的稳定性,提高了辐射效率,减少了天线设计和加工的复杂度,降低了成本。天线在2.6 GHz、3.5 GHz和4.9 GHz三个5G应用波段取得了良好的谐振,辐射效率基本达到90%。The electrically controlled variable elements are mostly used in traditional frequency reconfigurable antennas to construct the feed network,which result in complex design and processing.In addition,the use of electronic components reduces the radiation efficiency and makes the performance unstable.In this paper,a mechanically tuned frequency reconfigurable antenna with high-order mode impedance matching is proposed.In order to use a fixed feed network for impedance matching without adding any electrically controlled variable elements,the antenna works in the third-order mode in two lower frequency bands to increase the input impedance.The proposed design increases the stability of the performance,improves the radiation efficiency,reduces the complexity of antenna design and processing,and reduces the cost.The antenna has achieved good resonance in the three 5G application bands of 2.6 GHz,3.5 GHz and 4.9 GHz,and the radiation efficiency has basically reached 90%.

关 键 词：频率可重构天线 单极子天线 馈电网络 多频段天线 

分 类 号：TN823[电子电信—信息与通信工程]