A NOVEL BROADBAND PATCH ANTENNA FOR UNIVERSAL UHF RFID TAGS

被引：12
作者：
Huang, Jun Zh [1 ,2 ]
Yang, Peng H. [2 ,3 ]
Chew, Weng Cho [1 ,4 ]
Ye, Terry Tao [5 ]
机构：
[1] Univ Hong Kong, Fac Engn, Hong Kong, Hong Kong, Peoples R China
[2] Shanghai Jiao Tong Univ, Shanghai 200030, Peoples R China
[3] Univ Elect Sci & Technol China, Chengdu 610054, Peoples R China
[4] Univ Illinois, Urbana, IL USA
[5] HK R&D Ctr Logist & Supply Chain Mangagement Enab, Hong Kong, Hong Kong, Peoples R China
来源：
MICROWAVE AND OPTICAL TECHNOLOGY LETTERS | 2010年 / 52卷 / 12期
关键词：
RF identification (RFID); tag antenna; broadband antenna; patch antenna; compact antenna; low-profile antenna;
D O I：
10.1002/mop.25560
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 compact broadband patch antenna is proposed in this paper for global ultra-high-frequency (UHF) RE identification (RFID) applications. The antenna is composed of four synchronous shorted patches that resonate at four different frequencies. broadening its impedance bandwidth. A central loop is incorporated to feed the four patches simultaneously, which provides the required input reactance for matching to the chip as well. Since the current of neighboring patch is vertical to each other that they can radiate well without canceling each other, the gain is stable over the whole frequency band. Prototype is fabricated and tested, which shows that the impedance bandwidth, can cover the whole UHF RFID band (840 MHz-960 MHz), and the read range is over 3 meters when EIRP is set to 30 dBm at the reader. (C) 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52:2653-2657, 2010; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.25560
引用
收藏
页码：2653 / 2657
页数：5
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