NDLI: High gain design of a very small normal mode helical antenna for RFID tags

Content Provider	IEEE Xplore Digital Library
Author	Yamada, Y. Hong, W.G. Jung, W.H. Michishita, N.
Copyright Year	2007
Description	Author affiliation: Nat. Defense Acad., Yokosuka (Yamada, Y.; Hong, W.G.; Jung, W.H.; Michishita, N.)
Abstract	Recently RFID tags of 900 MHz band are interested in many commercial fields. Tags are requested to be used on liquid bottles, medicine bottles and metallic plates. So, antennas are requested to be made very small and to have properties capable of use in metal proximity. In this paper, important design subjects to achieve very small antennas are summarized and technical solutions are explained first of all. Following this summary, the normal mode helical antenna (NMHA) is selected as a promising antenna that is suitable for achieving high gain in very small size and metal proximity use. Next, useful design data of NMHA to achieve high gain and metal proximity are shown. And an example of achieving a low profile NMHA is shown. In order to ensure realization, measured results of a fabricated antenna is shown. Moreover, the fabricated antenna is applied to the commercial IC chip. Communication distances are compared with that of the commercial tags.
Starting Page	1
Ending Page	4
File Size	1540589
Page Count	4
File Format	PDF
ISBN	9781424412716
DOI	10.1109/TENCON.2007.4428965
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-10-30
Publisher Place	Taiwan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Helical antennas RFID tags Dipole antennas Immune system Antenna measurements Semiconductor device measurement Wavelength measurement Magnetic resonance Antenna accessories Impedance
Content Type	Text
Resource Type	Article

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