摘要
本文中的圆极化天线的实现方法是通过非中心馈电的振子获得90度的相位差。该振子的长度在半个波长到一个波长之间,采用非中心馈电的方式能够在振子的馈电点的两边实现90度的相位差;通过对振子弯折实现两个相位相差90度的电流在空间上正交;仿真结果表明非中心馈电宽带圆极化天线实现了在4GHZ-6GHZ频带内以|S11|<-10dB的回波损耗为标准的阻抗带宽40%,在4GHZ-7GHZ频带内以3dB的轴比为标准的54%轴比带宽。
The realization method of the circularly polarized antenna in this paper is to obtain a phase difference of 90 degrees through a non-center-fed vibrator.The length of the vibrator is between half a wavelength and one wavelength,and the non-central feeding method can achieve a phase difference of 90 degrees on both sides of the feeding point of the vibrator;by bending the vibrator,the two phases are 90 degrees out of phase.The currents are spatially orthogonal;the simulation results show that the non-center-fed broadband circularly polarized antenna achieves an impedance bandwidth of 40%in the 4 GHZ-6 GHZ frequency band with S11<-10 dB return loss as standard,and in the 4 GHZ-7 GHZ frequency band Axial ratio of 3 dB is used as the standard 54%axial bandwidth.
作者
刘晓夏
伍捍东
赵宏锋
彭军
马超
罗松
LIU Xiao-xia;WU Han-dong;ZHAO Hong-feng;PENG Jun;MA Chao;LUO Song(The Fourth Institute of Telecommunications Science and Technology Research Institute;Xi'an Hengda Microwave Technology Development Co.,Ltd.,Xi'an 710100)
出处
《微波学报》
CSCD
北大核心
2020年第S01期130-132,共3页
Journal of Microwaves
关键词
非中心馈电
圆极化
振子天线
non-central feed
circular polarization
array antenna
