Title :
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
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;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2006.875892
