摘要
对分形微带天线接收信号传感器进行设计,能够有效提高微带传感器的抗干扰性,稳定其工作性能。对微带传感器的设计过程,首先需要分析分形理论原理,进而对微带天线进行优化设计。传统方法通过矩形微带贴片天线的辐射元尺寸对其固有谐振频率的影响规律,导致设计的传感器抗干扰性差,传统设计过程过于繁琐,不适合在实际中应用。为解决上述问题,设计了一种基于分形结构微带天线的新型传感器。首先对外置矩形贴片进行设计,选择合适介质基片材料,以分形理论为依据,对分形微带天线的设计原理分析优化,传感器采用有限积分法(Finite Integration Technique,FIT)仿真计算,结果证明,该传感器增益较高且有较好的方向性和匹配性,绝对带宽为745~898MHz,驻波比小于2的带宽达19.1%,耦合局部放电超高频信号强烈,且结构紧凑,方便现场使用,可有效应用于输变电设备局部放电的在线监测和离线检测工作。
This article focuses on a new type sensor of microstrip antenna based on fractal structure. Firstly, we design external rectangular patch, and then select substrate material of suitable dielectric. Finally, we analyze and optimize design principle of fractal microstrip antennas on the basis of fractal theory and adopted Finite Integration Technique to simulate sensor. The simulation results show that the sensor in this article has high gain and good direc- tionality and matching. The absolute bandwidth is 745 to 898MHz. Standing-wave ratio less than 2 is 19.1%. Ultra- high frequency signal of coupled partial discharge is strong and compact. It is convenient for field service and is effec- tively applied in on-line monitoring and off-line detection of partial discharge of electric transmission and transforma- tion equipment.
作者
陈璐
CHEN Lu(Electric Power Research Institute, SMEPC, Shanghai 200437, Chin)
出处
《计算机仿真》
北大核心
2017年第11期163-167,共5页
Computer Simulation
关键词
分形理论
微带天线
传感器
Fractal theory
Microstrip antenna
Sensor
