Metamaterial

Patent metadata

Field	Value
Publication number	US-9614289-B2
Application number	US-201314426035-A
Country	US
Kind code	B2
Filing date	Aug 29, 2013
Priority date	Sep 25, 2012
Publication date	Apr 4, 2017
Grant date	Apr 4, 2017

Abstract

A cell forming a metamaterial, comprises a patch conductor, a conductor layer arranged in parallel with the patch conductor, and a connection conductor configured to electrically connect the patch conductor and the conductor layer. The connection conductor forms a helical electrical path by a plurality of conductor lines and a plurality of vias which connect the conductor lines to the patch conductor and the conductor layer.

First claim

The invention claimed is:

1. A cell forming a metamaterial, comprising a patch conductor, a conductor layer which forms a ground layer or a power supply layer, arranged in parallel with the patch conductor, and a connection conductor configured to electrically connect the patch conductor and the conductor layer,
wherein the connection conductor forms a helical electrical path by a plurality of conductor lines and a plurality of vias which connect the conductor lines to the patch conductor and the conductor layer, and wherein an electrical path is formed so that current directions in the conductor lines on a same plane are a predetermined direction.

2. The cell according to claim 1 , wherein
the connection conductor includes at least first to Nth vias (N is an integer of not less than 3), and at least first to (N−1)th conductor lines,
the first via is directly connected to the patch conductor,
the Nth via is directly connected to the conductor layer, and
a Kth via (K is an integer of 1 to N−1) is connected to a (K+1)th via via a Kth conductor line.

3. The cell according to claim 1 , wherein
the connection conductor includes at least first to Nth vias (N is an integer of not less than 3), and at least first to (N+1)th conductor lines,
the first via is connected to the patch conductor via the first conductor line,
the Nth via is connected to the conductor layer via the (N+1)th conductor line, and
a Kth via (K is any integer from 1 to N−1) is connected to a (K+1)th via via a (K+1)th conductor line.

4. The cell according to claim 1 , wherein the conductor lines are alternately arranged on a same plane of the patch conductor and a same plane of the conductor layer via the vias.

5. The cell according to claim 1 , wherein another plane is further defined in addition to the patch conductor and the conductor layer, and the conductor lines are alternately arranged via vias on a plane of one of the patch conductor and the conductor layer and on the other plane.

6. The cell according to claim 1 , wherein two other planes are further defined in addition to planes of the patch conductor and the conductor layer, and the conductor lines are alternately arranged via vias on the two other planes.

7. The cell according to claim 4 , wherein conductor lines arranged on one of different planes are arranged in a zigzag direction.

8. The cell according to claim 4 , wherein conductor lines arranged on one of different planes are arranged such that lengths are different.

9. The cell according to claim 4 , wherein conductor lines arranged on one of different planes are arranged parallel to a diagonal line of the plane of one of the patch conductor and the conductor layer.

10. The cell according to claim 4 , wherein in a case where the conductor lines are arranged on the planes of the patch conductor and the conductor layer, the patch conductor and the conductor layer each comprise a clearance for containing the conductor lines.

11. An array structure in which cells cited in claim 1 are arranged such that connection conductors of two adjacent patch conductors are arranged in the same direction.

12. An array structure in which cells cited in claim 1 are arranged such that connection conductors of two adjacent patch conductors are rotated 90° to each other.

Assignees

• Canon Kk

Inventors

• Asai Hitoshi

Classifications

• H01Q1/52

  Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure (absorbing means H01Q17/00) · CPC title

• H01Q15/006 Primary

  Selective devices having photonic band gap materials or materials of which the material properties are frequency dependent, e.g. perforated substrates, high-impedance surfaces · CPC title

• H01Q15/0086

  said selective devices having materials with a synthesized negative refractive index, e.g. metamaterials or left-handed materials · CPC title

• H01P1/2005 Primary

  Electromagnetic photonic bandgaps [EPB], or photonic bandgaps [PBG] · CPC title

• H01P7/00

  Resonators of the waveguide type · CPC title