加载腔体的高增益宽带圆极化交叉偶极子天线设计
Design of high gain wideband circularly polarized cross dipole antenna with loaded cavity
秦永娟 1冯立营1
作者信息
- 1. 天津职业技术师范大学电子工程学院,天津 300222
- 折叠
摘要
设计了一种加载腔体的高增益宽带圆极化交叉偶极子天线,该天线印刷在方形电路板上下两侧,偶极子天线被设计成顺序旋转的L形辐射贴片,并在方形介质基板中心位置设计一条用于阻抗匹配的圆环线,从而实现良好的圆极化性能.通过改变地板反射器的传统尺寸以及在四周加载金属腔体,圆极化性能整体得到了较大提升.通过Ansys HFSS电磁仿真软件进行仿真,结果表明:电压驻波比(voltage standing wave ratio,VSWR)<2的阻抗带宽为57.03%(1.78～3.20 GHz),3 dB轴比带宽为31.66%(2.18～3.00 GHz),在工作带宽内的平均右旋圆极化峰值增益为10.79 dBic.
Abstract
A high-gain broadband circular-polarized(CP)cross dipole antenna loaded with cavity is designed and print-ed on the upper and lower sides of the square circuit board.The dipole antenna is designed as sequentially rotated L-shaped radiating patches,and a circular ring line is positioned at the center of the square dielectric substrate for impedance match-ing,so as to achieve good circular polarization performance.In addition,by changing the traditional dimensions of the floor reflector and loading metal cavities around it,the overall circular polarization performance is greatly improved.The simula-tion results of Ansys HFSS electromagnetic simulation software show that with a Voltage Standing Wave Ratio(VSWR)<2,the antenna exhibits an impedance bandwidth of 57.03%(1.78～3.20 GHz),a 3 dB axial ratio bandwidth of 31.66%(2.18～3.00 GHz),and an average peak gain of 10.79 dBic for right-hand circularly polarized(CP)within the operating bandwidth.
关键词
圆极化天线/交叉偶极子天线/高增益Key words
circularly polarized antenna/cross dipole antenna/high gain引用本文复制引用
基金项目
天津市教委科研计划重点项目(2022ZD011)
出版年
2024
NETL
NSTL
万方数据