›› 2014, Vol. 27 ›› Issue (5): 56-.

• Articles • Previous Articles     Next Articles

Wideband Circularly Polarized Antenna with High Gain

WEN Yaotong,LIU Nengwu,ZHANG Zhiya   

  1. (1.Wireless Product Management Department,ZTE,Xi'an 710114,China;2.School of Electronic Engineering,Xidian University,Xi'an 710000,China)
  • Online:2014-05-15 Published:2014-05-14


A wideband circular polarization antenna with high gain is designed.The antenna is excited by two coaxial baluns,and the feed network consists of a Wilkinson power divider and a 90°phase difference comparator,which can provide equal amplitude but in phase quadrature in the wideband frequency and improve the impedance bandwidth and AR bandwidth.By adding a rectangular ring around the bowtie dipoles,the effective radiation area is enhanced,and thus the gain of the antenna is improved.The measured results show that the proposed antenna can achieve a measured impedance bandwidth of 63.6% for VSWR≤1.5 and a 3-dB axial ratio bandwidth of 66.7%.The antenna has a stable peak circularly polarized gain better than 9.4 dBi ranging from 1.1 GHz to 1.6 GHz.

Key words: antenna;circular polarization;feed network;high gain

CLC Number: 

  • TN821+.1