SMALL LOOP ANTENNA FOR INDUCTION READER/WRITER

Title:

SMALL LOOP ANTENNA FOR INDUCTION READER/WRITER

Document Type and Number:

WIPO Patent Application WO/2005/074072

Kind Code:

A1

Abstract:

There is provided a small antenna for induction reader/writer capable of increasing the communication distance even when the antenna area or power supply to the antenna is restricted. The small antenna for induction reader/writer has a two-layer structure of loop antennas arranged at a predetermined interval and each comprising a printed board (2) for forming a loop pattern (1), the loop pattern (1) formed by etching the printed board (2), and a start terminal (3) and an end terminal (4) for supplying signal transmission power and outputting a received signal.

Inventors:

IBI TOSHIAKI (JP)
HASHIMOTO SHIGERU (JP)
SUGIMURA YOSHIYASU (JP)

Application Number:

PCT/JP2005/000413

Publication Date:

August 11, 2005

Filing Date:

January 14, 2005

Export Citation:

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Assignee:

FUJITSU FRONTECH LTD (JP)
IBI TOSHIAKI (JP)
HASHIMOTO SHIGERU (JP)
SUGIMURA YOSHIYASU (JP)

International Classes:

G06K19/077; G06K19/07; H01Q1/22; H01Q1/38; H01Q7/00; H04B5/02; (IPC1-7): H01Q7/00; H01Q1/38; H04B5/02; H04B1/59

Foreign References:

JPH07263935A	1995-10-13
JP2001325574A	2001-11-22
JPH05145451A	1993-06-11
JPH1127030A	1999-01-29

Other References: