BROADBAND MONOPOLE ANTENNA WITH WIDE BAND CIRCULAR POLARIZATION

被引：26
|
作者：
Chen, B. [1 ]
Jiao, Y. -C. [1 ]
Ren, F. -C. [1 ]
Zhang, L. [1 ]
机构：
[1] Xidian Univ, Natl Key Lab Antennas & Microwave Technol, Xian 710071, Shaanxi, Peoples R China
来源：
PROGRESS IN ELECTROMAGNETICS RESEARCH LETTERS | 2012年 / 32卷
关键词：
D O I：
10.2528/PIERL12032807
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A novel broadband monopole antenna design with wideband circular polarization (CP) characteristic is presented. This antenna consists of a feed line and a step-shaped ground plane which is formed by cutting a notch in the upper left corner of an asymmetric ground plane. The asymmetric ground plane is capable of exciting two-orthogonal electric field vectors with equal amplitude and 90 phase difference (PD) for CP. By cutting a notch, the 10-dB impedance bandwidth can be enhanced greatly and the 3-dB axial ratio (AR) bandwidth is also improved meanwhile. The measured impedance bandwidth is about 5.96 GHz (84.7%) from 4.06 to 10.02 GHz, and the measured AR-bandwidth is about 2.64 GHz (36.5%) from 5.91 to 8.55 GHz. The results show that the antenna can achieve wide impedance-bandwidth and wide AR-bandwidth simultaneously.
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页码：19 / 28
页数：10
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