Polarization and Space Diversity Antenna Using Inverted-F Antennas for RFID Reader Applications

Author

Kim, Jong-Sung ; Shin, Kwang-Ho ; Park, Seung-Mo ; Choi, Won-kyu ; Seong, Nak-Seon

Author_Institution

Dept. of Commun. Eng., Kyungsung Univ., Pusan

Volume

5

Issue

1

fYear

2006

Firstpage

265

Lastpage

268

Abstract

An orthogonal antenna is presented for reader applications of radio frequency identification (RFID) at 433 MHz. The antenna is composed of two 1 times 2 subarrays orthogonally placed on a ground plane. Two different feeding networks are introduced to control horizontal and vertical radiation current flows for each subarray, respectively. An inverted-F structure is used as a radiation element with vertical and horizontal currents flowing on the radiator, thereby obtaining two linear polarizations. Antenna gains are 3.71 and 3.43 dBi and isolation between the two input ports is less than 25 dB

Keywords

UHF antennas; antenna arrays; antenna feeds; antenna radiation patterns; diversity reception; electromagnetic wave polarisation; radiofrequency identification; 433 MHz; RFID reader applications; feeding networks; inverted-F antennas; linear polarizations; orthogonal antenna; radiation element; radio frequency identification; space diversity antenna; Antenna arrays; Containers; Costs; Feeds; Geometry; Microstrip antennas; Polarization; RFID tags; Radiofrequency identification; Slot antennas; Diversity; inverted-F antenna (IFA); radio frequency identification (RFID); reader; tag;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2006.875892

Filename

1645103