摘要
为了满足“十二五”双超天线对超宽带、超视距、低剖面、宽角扫描的需求,设计了一款频段为110 MHz~520 MHz的紧耦合偶极子阵列天线(TCDA)。该阵列天线由8×8个单元组成,采用二阶威尔金森功分器和集成Marchand巴伦的组合实现超宽带、平衡馈电、阻抗匹配功能,并共同构成了馈电网络,同时采用双振子单元结构抑制E面扫描共模谐振,且通过加载垂直频率选择表面层实现了H面扫描阻抗匹配。仿真和实测结果表明:该天线在110 MHz~520 MHz、±40°扫描角度内,电压驻波比典型值小于2.5, 520 MHz时阵列天线增益为16.2 dB,天线整体剖面高度小于λlow/8。该超短波频段TCDA具有超宽带、宽角扫描、低剖面、易于集成的优点,填补了国内外在甚高频和特高频频段内TCDA设计的空白。
In order to meet the requirements of“The Twelfth Five Year Plan”dual super antennas for ultra-wideband,over the horizon,low profile,and wide-angle scanning,a tightly coupled dipole array antenna(TCDA)operating in the 110 MHz~520 MHz frequency band is designed in this paper.The array antenna consists of 8×8 elements,using a combination of second-order Wilkinson power divider and integrated Marchand Balun to achieve ultra-wideband,balanced feeding,and impedance matching functions,collectively forming a feeding network.Additionally,the structure of dual-dipole unit is adopted to suppress E-plane scanning common-mode resonance,and H-plane scanning impedance matching is achieved by loading a vertical frequency selective surface layer.The simulation and measurement results show that the typical voltage standing wave ratio of the antenna is less than 2.5 within±40°scan angle and 110 MHz~520 MHz band.Moreover,the array antenna gain is 16.2 dB at 520 MHz,and the overall profile height of the antenna is less thanλlow/8.The designed ultra-short wave band TCDA has the advantages of ultra-wideband,wide-angle scanning,low profile,and easy integration,which fills the gap in TCDA design at the very high frequency and the ultra-high frequency bands both at home and abroad.
作者
柴舜连
刘亿荣
周承冕
CHAI Shunlian;LIU Yirong;ZHOU Chengmian(College of Electronics Science and Engineering,National University of Defense Technology,Changsha Hunan 410073,China)
出处
《现代雷达》
北大核心
2025年第2期96-102,共7页
Modern Radar
基金
信号盲处理国家级重点实验室基金资助项目。
关键词
紧耦合阵列
超宽带天线
集成巴伦
宽角扫描
低频段
tightly coupled array
ultra-wideband antenna
integrated Balun
wide-angle scanning
low frequency band
作者简介
柴舜连,男,1969年生,博士,教授,研究方向为电磁场理论与高效数值技术、天线理论与技术、毫米波电路与系统;刘亿荣,男,1997年生,硕士研究生,研究方向为电磁场数值计算、新型天线技术;周承冕,男,1998年生,博士研究生,研究方向为电磁场与电磁波、新型天线技术。
