A Circularly Polarized Antenna Array with Gain Enhancement for Long-Range UHF RFID Systems

被引：16

作者：

Hu, Wei ^{[1
,2
]}

Wen, Guangjun ^{[1
]}

Inserra, Daniele ^{[1
]}

Huang, Yongjun ^{[1
]}

Li, Jian ^{[1
]}

Chen, Zhizhang ^{[2
,3
,4
]}

机构：

[1] Univ Elect Sci & Technol China, Sch Informat & Commun Engn, Chengdu 611731, Sichuan, Peoples R China

[2] Univ Elect Sci & Technol China, Sch Elect Sci & Engn, Chengdu 611731, Sichuan, Peoples R China

[3] Dalhousie Univ, Dept Elect & Comp Engn, Halifax, NS B3H 4R2, Canada

[4] Fuzhou Univ, Coll Phys & Informat Engn, Fuzhou 350108, Fujian, Peoples R China

来源：

ELECTRONICS | 2019年 / 8卷 / 04期

基金：

中国国家自然科学基金;

关键词：

antenna arrays; high gain; circular polarization; sequential phase; AXIAL-RATIO; BANDWIDTH; RADIATION; DESIGN;

D O I：

10.3390/electronics8040400

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

A 2 x 2 circularly polarized (CP) sequential rotation microstrip patch antenna array with high gain for long-range ultra-high frequency (UHF) radio frequency identification (RFID) communication is proposed in this paper. In order to meet the operational frequency band requirement of 840-960 MHz and, at the same time, achieve enhanced broadside gain, a two-level sequential rotation structure is developed. Series power divider is used as the basic element of the feed network that is implemented with the substrate-integrated coaxial line technology for minimizing radiation losses. The manufactured prototype exhibits a peak gain of 12.5 dBic at 900 MHz and an axial ratio (AR) bandwidth (AR 3 dB) of 18.2% from 828 to 994 MHz. In comparison with the state-of-the-art, the proposed antenna shows an excellent gain/size trade-off.

引用

页数：11

共 28 条

[1] RFID Backscattering in Long-Range Scenarios [J].