Title :
High performance normal mode helical antennas for RFID tags
Author :
Gook Hong, Won ; Hyun Jung, Woong ; Yamada, Yoshihide ; Michishita, Naobumi
Author_Institution :
Nat. Defense Acad., Yokosuka
Abstract :
A 0.035 wavelength very small normal mode helical antenna is designed to achieve high antenna efficiency. Antenna gain of -3.72dBd is achieved. When this antenna is attached on a metal plate, antenna gain is increased to -0.4dBd. Communication distances of current RFID tags and NMHA tags are measured. In the case of NMHA tags, communication distances comparable to current RFID tags are ensured.
Keywords :
helical antennas; radiofrequency identification; NMHA tags; RFID tags; antenna efficiency; antenna gain; communication distances; metal plate; normal mode helical antennas; Antenna feeds; Antenna measurements; Dipole antennas; Helical antennas; Impedance; Magnetic field measurement; RFID tags; Slot antennas; UHF antennas; Wavelength measurement;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2007 IEEE
Conference_Location :
Honolulu, HI
Print_ISBN :
978-1-4244-0877-1
Electronic_ISBN :
978-1-4244-0878-8
DOI :
10.1109/APS.2007.4396926
