WAVEGUIDE

WIPO Patent Application WO/2017/150650

A1

Provided is a waveguide that enables communication even when a conductor is present between a reader-writer and an RF tag. The waveguide according to the present invention is a waveguide 10 used when a shielding conductor 102 that shields electromagnetic waves W is present between a reader-writer 100 and an RF tag 101, wherein the waveguide is provided with a first waveguide element 20 and a second waveguide element 30 that each have electrical lengths of λ/4, λ being the wavelength of the electromagnetic waves, and a transmission path 40 in which one end of each of the first waveguide element and the second waveguide element are connected to each other. The waveguide is inserted into a through-hole 102a in the shielding conductor, and the first waveguide element and the second waveguide element are disposed in two spaces set off by the shielding conductor. Electromagnetic waves sent from the reader-writer are received by the first waveguide element and emitted by the second waveguide element, thereby preventing the conventional occurrence of all of the electromagnetic waves being reflected by the shielding conductor, and enabling communication between the reader-writer and the RF tag.

WO/2001/043057	METHOD AND APPARATUS FOR ANALYZING MEDICAL IMAGES
JPH1125209	INFORMATION INPUT DEVICE, ITS METHOD, RECORDING MEDIUM, AND TWO-DIMENSIONAL BAR CODE PRINTER
JP2001256426	BARCODE READER

SUGIMURA SHIRO (JP)
NIWATA TATSUJI (JP)
NABESHIMA HAYATO (JP)

PCT/JP2017/008219

September 08, 2017

March 02, 2017

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PHOENIX SOLUTION CO LTD (JP)

G06K7/10; G06K19/077; H01P5/02; H01Q21/10; H04B5/02

JPH0848337A	1996-02-20
JP2008107888A	2008-05-08
US20030214774A1	2003-11-20
US20070001809A1	2007-01-04
JP2009501933A	2009-01-22
JP2008066841A	2008-03-21

UMINO Toru (JP)

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