Compact loop antenna for inductive read/write apparatus

Details Compact loop antenna for inductive read/write apparatus Compact loop antenna for inductive read/write apparatus

2007-08-21

2007-08-21

Nguyen, Hoang V. (Department: 2821)

Communications: radio wave antennas

Antennas

Loop type

C343S870000, C343S742000

Reexamination Certificate

active

11496283

ABSTRACT:
In order to provide a compact loop antenna, for use in an inductive read/write apparatus, capable of extending a communication range even if the antenna area or power supply thereto is constrained, a compact loop antenna, for use in an inductive read/write apparatus, comprises two layers of loop antennas, each thereof comprising a printed circuit board2for featuring a loop pattern1, a loop pattern1formed by an etching process on the printed circuit board2, and a start terminal3and a end terminal4for supplying power for signal transmission and outputting a received signal and each thereof maintaining a predetermined distance from each other.

REFERENCES:
patent: 5808587 (1998-09-01), Shima
patent: S54-8441 (1979-01-01), None
patent: 05-145451 (1993-06-01), None
patent: 11-027030 (1999-01-01), None
patent: 07-263935 (1999-10-01), None
patent: 11-272826 (1999-10-01), None
patent: 2001-325574 (2001-11-01), None
“International Search Report for Application No. PCT/JP2005/000413, dated Mar. 2005”, 2 Pages.

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