# US 2014/0191828 A1 · Electromagnetic wave propagation sheet and display shelf implementing electromagnetic wave propagation sheet

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 2014/0191828 A1
- Document ID: US20140191828A1
- Status: Published application
- Kind: A1
- Application number: 14/233,650
- Filed: 2012-06-22
- Published: 2014-07-10
- Earliest claimed: 2011-07-21
- Assignees: NEC Corporation
- Inventors: Koichiro Nakase; Tsuneo Tsukagoshi
- Web page: https://patentgrep.com/patent/US20140191828A1

## CPC

- H01P 3/00: Waveguides; Transmission lines of the waveguide type
- H01P 3/08: Microstrips; Strip lines
- H01Q 13/20: Non-resonant leaky-waveguide or transmission-line antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H04B 13/00: Transmission systems characterised by the medium used for transmission, not provided for in groups H04B3/00 - H04B11/00
- H01P: WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE (operating at optical frequencies G02B)
- H01Q: ANTENNAS, i.e. RADIO AERIALS (radiators or antennas for microwave heating H05B6/72)
- H04B: TRANSMISSION

## Abstract

Provided is an electromagnetic wave propagation sheet constituted by a mesh-shaped conductor layer, a planar conductor layer, and an inductor layer sandwiched therebetween, wherein the mesh-shaped conductor layer and the planar conductor layer are electrically connected to each other in an end section of the electromagnetic wave propagation sheet by a short conductor, and a mesh-shaped conductor that constitutes the mesh-shaped conductor layer has a meander shape in the vicinity of the electromagnetic wave propagation sheet end section.

## Claims

### Claim 1

An electromagnetic wave propagation sheet comprising:
a mesh-shaped conductor layer;
a planar conductor layer; and
an inductor layer sandwiched therebetween,
wherein the mesh-shaped conductor layer and the planar conductor layer are electrically connected to each other in an end section of the electromagnetic wave propagation sheet by a short conductor, and a mesh-shaped conductor that constitutes the mesh-shaped conductor layer has a meander shape in the vicinity of the electromagnetic wave propagation sheet end section.

### Claim 2

An electromagnetic wave propagation sheet comprising:
a mesh-shaped conductor layer;
a planar conductor layer; and
a dielectric layer sandwiched therebetween,
wherein the mesh-shaped conductor layer and the planar conductor layer are electrically connected to each other in an end section of the electromagnetic wave propagation sheet by a short conductor, and a mesh-shaped conductor that constitutes the mesh-shaped conductor layer has a spiral shape in the vicinity of the electromagnetic wave propagation sheet end section.

### Claim 3

An electromagnetic wave propagation sheet comprising:
a mesh-shaped conductor layer;
a planar conductor layer; and
a dielectric layer sandwiched therebetween,
wherein the mesh-shaped conductor layer and the planar conductor layer are electrically connected to each other in an end section of the electromagnetic wave propagation sheet by a short conductor, and a mesh-shaped conductor that constitutes the mesh-shaped conductor layer has a smaller line width in the vicinity of the electromagnetic wave propagation sheet end section than that of the other portion.

### Claim 4 (depends on 3)

The electromagnetic wave propagation sheet according to claim 3, wherein a length of a thin line in the vicinity of the sheet end section of the mesh-shaped conductor is smaller than ¼ of a length of the electromagnetic wave propagated in the sheet.

### Claim 5 (depends on 1)

The electromagnetic wave propagation sheet according to claim 1, wherein a magnetic body is applied in the vicinity of the electromagnetic wave propagation sheet end section.

### Claim 6

An electromagnetic wave propagation sheet comprising:
a mesh-shaped conductor layer;
a planar conductor layer; and
a dielectric layer sandwiched therebetween,
wherein the mesh-shaped conductor layer and the planar conductor layer are electrically connected to each other in an end section of the electromagnetic wave propagation sheet by a short conductor, and a magnetic body is applied only in the vicinity of the electromagnetic wave propagation sheet end section.

### Claim 7 (depends on 1)

A display shelf of a store having at least one shelf plate, wherein the electromagnetic wave propagation sheet according to claim 1 is implemented on a front surface of the shelf plate to be electrically connected by a short conductor in an end section, and a mesh-shaped conductor that constitutes a mesh-shaped conductor layer has a meander in the vicinity of the electromagnetic wave propagation sheet end section.