Detection or identification antenna insensitive to the...

Details Detection or identification antenna insensitive to the... Detection or identification antenna insensitive to the...

2003-07-17

2008-11-18

Chen, Shih-Chao (Department: 2821)

Communications: radio wave antennas

Antennas

High frequency type loops

C343S867000, C235S492000

Reexamination Certificate

active

07453408

ABSTRACT:
A resonant detection or identification antenna having at least one turn the antenna includes at least one electrically conducting wire and is connected to an electronic transponder chip, the operating frequency of the antenna being greater than or equal to 10 MHz and the area defined by the at least one turn being substantially less than or equal to 0.30 m2. The total capacitance of the antenna is substantially greater than or equal to 140 pF and the Q-factor of the at least one turn is substantially greater than or equal to 30.

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patent: 4745401 (1988-05-01), Montean
patent: 6161761 (2000-12-01), Ghaem et al.
patent: 6164551 (2000-12-01), Altwasser
patent: 6600420 (2003-07-01), Goff et al.
patent: 7066393 (2006-06-01), Stromberg et al.
patent: 7154449 (2006-12-01), Liu et al.
patent: 100 56 148 (2002-05-01), None
patent: 2 803 439 (2001-07-01), None
patent: EP 0 786 357 (1997-07-01), None
patent: EP 0 704 816 (1996-04-01), None

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