Antenna for reader/writer and reader/writer having the antenna

Details Antenna for reader/writer and reader/writer having the antenna Antenna for reader/writer and reader/writer having the antenna

2003-01-17

2009-02-24

Ho, Tan (Department: 2821)

Communications: radio wave antennas

Antennas

Including magnetic material

C343S787000, C343S895000, C340S572500

Reexamination Certificate

active

07495625

ABSTRACT:
A soft magnetic member which is formed by a composite of an organic object to satisfy a predetermined relationship with an antenna area, a circumference length, and a magnetic transmission ratio and a conductive member are provided between an antenna coil which is formed by at least one loop and a metal surface of the conductive member such as a metal casing. The magnetic flux which invades into the conductive object is blocked by the soft magnetic member and the conductive member so as to restrict the influence thereof.

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