A Novel Compact CP Antenna with Wide Axial Ratio Bandwidth for Worldwide UHF RFID Handheld Reader

被引：3
|
作者：
Ahmed, Waleed Abdelrahim [1 ]
Feng Quanyuan [1 ]
机构：
[1] Southwest Jiaotong Univ, Sch Informat Sci & Technol, Chengdu 611756, Sichuan, Peoples R China
来源：
INTERNATIONAL JOURNAL OF ANTENNAS AND PROPAGATION | 2019年 / 2019卷
基金：
中国国家自然科学基金;
关键词：
CIRCULARLY-POLARIZED ANTENNA; PATCH ANTENNA; SLOT ANTENNA; PLANAR;
D O I：
10.1155/2019/2497450
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：
This study presents a novel compact circularly polarized antenna for universal ultrahigh-frequency (UHF) radio-frequency identification (RFID) handheld reader applications. The antenna is composed of a coplanar waveguide (CPW) L-shaped feedline mounted at the right edge of the square slot at the bottom of the ground plane to realize a circular polarization; a horizontal stub protruded from the right side of the square slot towards the slot centre, and a vertical stub is mounted at the lower left of the square slot. The designed antenna printed on one ground plane layer of a low-cost FR4 substrate with an overall size of 120x120x1.6mm3. The measurement results show indicate that the fabricated antenna achieves a wide axial ratio (AR) bandwidth of 460MHz (818-1278MHz), wide impedance bandwidth of 54.6% (630-1103MHz), and a measured peak gain of 4.0dBi. The proposed antenna is a good candidate for compact universal UHF RFID handheld reader applications (840-960MHz).
引用
收藏
页数：9
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