NDLI: Design of paper-substrate dipole antennas magnetically coupled to UHF RFID silicon chips

Content Provider	IEEE Xplore Digital Library
Author	Alimenti, F. Orecchini, G. Virili, M. Palazzari, V. Mezzanotte, P. Roselli, L.
Copyright Year	2011
Description	Author affiliation: University of Perugia, Dept. of Electronic and Information Engineering, via G. Duranti 93, 06125, ITALY (Alimenti, F.; Orecchini, G.; Virili, M.; Palazzari, V.; Mezzanotte, P.; Roselli, L.)
Abstract	This work investigates the design of a paper-substrate dipole antenna and its magnetic coupling to a UHF RFID chip. The magnetic coupling is realized by means of a heterogeneous transformer, the primary winding of which is implemented on the same paper-substrate of the antenna. The secondary winding, instead, is directly fabricated on the Si RFID chip, thus does not require for galvanic contacts between chip and antenna. The transformer insertion loss can be reduced to the device Maximum Available Gain (MAG) if a proper impedance termination of the primary (ZS,opt) and secondary (ZL,opt) windings is adopted. For the considered heterogeneous transformer the MAG is quite low and around −0.6 dB. Following this idea, a bow-tie dipole antenna is designed to meet ZS,opt at the operating frequency of 868 MHz. The antenna size is reduced by exploiting a meander line. As a result, the designed dipole features an overall length of about 40 mm. To the authors knowledge this is the first bow-tie antenna the design of which has been optimized for the magnetic RFID coupling concept.
Starting Page	219
Ending Page	222
File Size	296333
Page Count	4
File Format	PDF
ISBN	9781457700286
e-ISBN	9781457700279
DOI	10.1109/RFID-TA.2011.6068641
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-09-15
Publisher Place	Spain
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Dipole antennas Windings Ink-jet paper printed circuits RFID Silicon Heterogeneous integration Impedance Flexible electronics Substrates Radiofrequency identification
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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