摘要
为设计可替代固体金属天线且具有小体积、高增益、宽带宽、易重构等特点的圆极化天线,提出一种易于调节形状的液态金属锥形螺旋天线。以应用于海事卫星通信为例,采用HFSS软件对天线进行设计与仿真,利用仿真软件的优化功能对天线进行了阻抗匹配,得到良好的圆极化辐射和阻抗特性。仿真结果表明：天线在整个海事卫星通信工作频带（1 525～1 660.5 MHz）范围内,增益达到8.5d B;轴比〈3 d B带宽达到了520 MHz。对比同尺寸同结构的固体金属（铜）天线,轴比带宽超出约30MHz。因此所提出的液态金属锥形螺旋天线在易于可重构前提下,达到了固体金属天线技术要求。
In order to replace the solid metal antenna, a novel liquid metal conical helical antenna was presented. The antenna is easy to adjust its shape. The circularly polarized antenna has the characteristics of small size, high gain, wide bandwidth, and it is easy to reconstruct. Taking maritime satellite communications as an example, the proposed antenna was designed, simulated and optimized for antenna impedance matching with HFSS software, and a good circularly polarized radiation and impedance characteristics for the antenna were obtained. The simulated results show that： in the entire maritime satellite communication work band（1 525-1 660.5 MHz）, the gain of the antenna achieves 8.5 d B; the 3 d B axial ratio（AR） bandwidth is 520 MHz. Comparing with the same size solid metal structure（copper）, the novel antenna exceeds approximately 30 MHz. Therefore, under the premise of easy reconfiguration, the proposed liquid metal conical helical antenna achieves the performance of the solid metal antennas.
出处
《系统仿真学报》
CAS
CSCD
北大核心
2016年第2期343-347,共5页
Journal of System Simulation
基金
国家自然科学基金(61401056)
辽宁省教育厅一般项目(L2012171)
关键词
液态金属
螺旋天线
带宽
截断结构
liquid metal
helical antenna
bandwidth
truncated structure
