A Low Profile Printed Quadrifilar Helical Antenna for Handheld UHF RFID Reader

被引：0

作者：

Wang, Wei-Hsu ^{[1
]}

Chiu, Chien-Wen ^{[1
]}

Ni, David C. ^{[2
]}

Chung, Yung-Rung ^{[3
]}

机构：

[1] Natl Ilan Univ, Dept Elect Engn, 1,Sec 1,Shennong Rd, Yilan 26047, Yilan County, Taiwan

[2] Unitech Elect Co Ltd, Res & Dev, New Taipei, Taiwan

[3] King Commun Mat Co, Taichung, Taiwan

来源：

PROCEEDINGS OF 2017 INTERNATIONAL CONFERENCE ON IMAGING, SIGNAL PROCESSING AND COMMUNICATION | 2015年

关键词：

RFID; UHF; PQHA; Handheld reader; miniaturization; Circular polarization;

D O I：

10.1145/3132300.3132301

中图分类号：

TP301 [理论、方法];

学科分类号：

081202 ;

摘要：

This paper proposes a compact printed quadrifilar helix antenna (PQHA) that has quarter wavelength inverted-F resonators at a low cost. The proposed PQHA is fed by a four-port quadrature phase system which consists of a 180 degrees degrees power splitter and two couplers implemented by lumped-element circuit. The fabricated and miniaturized PQHA measures only 60 x 60 x 27 mm(3).The measured impedance bandwidth is about 21% and the 3-dB axial ratio bandwidth range from 800-1000MHz can cover the whole UHF RFID bands. The measured maximum gain is around 3.6dBic and the 3-dB beam width is about 120 degrees at 920 MHz, which small size and good performance is enough for practical handheld RFID applications.

引用

页码：126 / 130

页数：5

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