Antenna substrate for non-contact communication apparatus...

Details Antenna substrate for non-contact communication apparatus... Antenna substrate for non-contact communication apparatus...

2011-01-25

2011-01-25

Le, HoangAnh T (Department: 2821)

Communications: radio wave antennas

Antennas

Spiral or helical type

C343S867000, C343S742000

Reexamination Certificate

active

07876284

ABSTRACT:
An antenna substrate for a non-contact communication apparatus includes a support substrate and an antenna coil provided on or inside of the support substrate. The antenna coil has a first opening and an auxiliary coil. The auxiliary coil has a second opening which has an opening area smaller than the first opening. The auxiliary coil is insulated and isolated from the antenna coil, and arranged so that the second opening is opposed to a part of the first opening when viewed from a direction orthogonal to a surface of the support substrate.

REFERENCES:
patent: 6809703 (2004-10-01), Serra
patent: 6839963 (2005-01-01), Haghiri-Tehrani et al.
patent: 2003/0076236 (2003-04-01), Cooksey et al.
patent: 2006-285709 (2006-10-01), None

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