Radio tag antenna structure for an optical recording medium...

Details Radio tag antenna structure for an optical recording medium... Radio tag antenna structure for an optical recording medium...

2007-07-24

2007-07-24

Tran, Thuy V. (Department: 2821)

Communications: radio wave antennas

Antennas

Microstrip

C343S872000, C343S873000

Reexamination Certificate

active

10999690

ABSTRACT:
An antenna comprises a dielectric member, an antenna pattern formed on one surface of the dielectric member, and a ground pattern formed on the other surface of the dielectric member. A part or the whole of the antenna is implanted in a dielectric layer on the side from which a laser beam does not come in of an optical recording medium symmetrically having a metal layer reflecting the laser beam and the dielectric layer, thereby to provide a radio tag antenna structure for an optical recording medium which is simple, is small-sized, and can secure necessary reading performance.

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European Search Report dated Dec. 15, 2005.

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