Antenna and non-contact tag

Details Antenna and non-contact tag Antenna and non-contact tag

2007-04-26

2009-08-04

Owens, Douglas W. (Department: 2821)

Communications: radio wave antennas

Antennas

Spiral or helical type

C343S741000, C343S767000, C343S770000

Reexamination Certificate

active

07570225

ABSTRACT:
An RFID antenna that can be disposed in a space-saving manner. The RFID antenna comprises an outermost peripheral conductive line that is bent in a manner extending along sides of a generally rectangular shape having a predetermined size, and a power-feeding conductive line that is disposed close to an inner periphery of the outermost peripheral conductive line in a manner extending parallel therewith, and is electrically connected to the outermost peripheral conductive line at ends thereof, the power-feeding conductive line including a portion thereof formed with a feeder part. Therefore, the antenna fits into a rectangle having a predetermined size, such as a card size.

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J.A. Flint, J.C. Vardaxoglou; Exploitation of Nonradiating Modes in Asymmetric Coplanar Strip Folded Dipoles; IEE Proc.MicrowAug. 2004; pp. 307-310.
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“Japanese Office Action”, English Translation, mailed Mar. 30, 2009, of corresponding JP Patent Application No. 2006-548596.

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