Non-feeding reradiating repeater and method for manufacturing of the same

Patent metadata

Field	Value
Publication number	US-9793973-B2
Application number	US-201514854863-A
Country	US
Kind code	B2
Filing date	Sep 15, 2015
Priority date	Sep 15, 2014
Publication date	Oct 17, 2017
Grant date	Oct 17, 2017

Abstract

Disclosed are a non-feeding re-radiating repeater and a method for manufacturing the same. The repeater includes: a dielectric substrate having a flat plate shape or a curved shape; and one or more unit cells formed on the dielectric substrate, in which each of the unit cells includes an arrangement of a plurality of conductor patterns. When electromagnetic waves incident from a first direction, the unit cells may re-radiate the electromagnetic waves in a second direction which is different from the first direction.

First claim

What is claimed is:

1. A non-feeding re-radiating repeater comprising:
a dielectric substrate having a flat plate shape or a curved shape; and
one or more unit cells formed on the dielectric substrate, each of the unit cells including an arrangement of a plurality of conductor patterns; and
wherein, when electromagnetic waves are incident from a first direction, the unit cells re-radiate the electromagnetic waves in a second direction which is different from the first direction, and
wherein the dielectric substrate re-radiates electromagnetic waves thereon in an angular direction of 90 degrees, and the interval of the unit cells on each of the dielectric substrates is set by the following equation:

d
=

λ

1
-

sin
⁢

⁢
α

,

where d is an interval of the unit cells arranged on each dielectric substrate, λ is a resonant frequency wavelength of the electromagnetic wave to be re-radiated, and α is an incident angle of the electromagnetic waves when the incident angle of the electromagnetic waves perpendicularly incident on the dielectric substrate is zero (0) degrees.

2. The non-feeding re-radiating repeater of claim 1 , wherein a delivery width, a direction, and a directivity of re-radiated electromagnetic waves are set depending on the size, the interval, and the positions of the conductor patterns.

3. The non-feeding re-radiating repeater of claim 1 , wherein the non-feeding re-radiating repeater includes a plurality of arrangements of the unit cells, and
the delivery width and direction of the re-radiated electromagnetic waves are set depending on an interval between the unit cells and the positions of the unit cells.

4. The non-feeding re-radiating repeater of claim 1 , wherein the dielectric substrate is formed of a transparent material.

5. The non-feeding re-radiating repeater of claim 1 , wherein the dielectric substrate is formed of a flexible material.

6. The non-feeding re-radiating repeater of claim 1 , wherein the unit cells re-radiate the electromagnetic waves incident on a first surface of the dielectric substrate, to a second surface of the dielectric substrate which is opposite to the first surface of the dielectric substrate.

7. The non-feeding re-radiating repeater of claim 1 , wherein the dielectric substrate is attached to any one of a window, an outer wall of a building, and an indoor wall surface.

8. The non-feeding re-radiating repeater of claim 1 , wherein the repeater includes a plurality of dielectric substrates, and
an interval of the unit cells arranged on a first dielectric substrate among the plurality of dielectric substrates is set to be different from intervals of the unit cells arranged on one or more other dielectric substrates.

9. The non-feeding re-radiating repeater of claim 8 , wherein the incident angle of the electromagnetic waves incident on each dielectric substrate is set to be different from the incident angle of the electromagnetic waves incident on any other dielectric substrate.

10. The non-feeding re-radiating repeater of claim 8 , wherein the dielectric substrates are laminated to each other.

11. A method of manufacturing a non-feeding re-radiating repeater, the method comprising:
setting the number and arrangement structure of unit cells to be arranged on a dielectric substrate, and a re-radiating angle to re-radiate incident electromagnetic waves;
calculating a phase difference between respective unit cells from an interval of the unit cells and the re-radiating angle of each unit cell;
configuring the unit cells to be suitable for the re-radiating angle using a plurality of conductor patterns; and
determining a size of the unit cells from the calculated phase difference between the respective unit cells, and
wherein the dielectric substrates re-radiates electromagnetic waves thereon in an angular direction of 90 degrees, and the interval of the unit cells on each of the dielectric substrates is set by the following equation:

d
=

λ

1
-

sin
⁢

⁢
α

,

where d is an interval of the unit cells arranged on each dielectric substrate, λ is a resonant frequency wavelength of the electromagnetic wave to be re-radiated, and α is an incident angle of the electromagnetic waves when the incident angle of the electromagnetic waves perpendicularly incident on the dielectric substrate is zero (0) degrees.

12. The method of claim 11 , wherein the phase difference between the respective unit cells is calculated from the following equation:
ψ=β× d ×cos θ,

wherein ψ is a phase difference, β is a phase constant, d is a distance between centers of adjacent unit cells, and θ is the re-radiating angle.

13. The method of claim 11 , wherein a correlation between the phase difference between the respective unit cells and the size of the unit cells is set in advance through a simulation.

14. The method of claim 11 , wherein the dielectric substrate is formed of a transparent material.

15. The method of claim 11 , wherein the dielectric substrate is formed of a flexible material.

Assignees

• Samsung Electronics Co Ltd

Inventors

• Kim Hyun-Jin
• Kim Byung-Chul
• Lee Young-Ju
• Lee Jung-Yub
• Choi Dong-Kyu

Classifications

• H01Q15/14

  Reflecting surfaces; Equivalent structures {(electromagnetic shields H01Q1/526)} · CPC title

• H04B7/145 Primary

  Passive relay systems · CPC title

• H01Q3/44

  varying the electric or magnetic characteristics of reflecting, refracting, or diffracting devices associated with the radiating element · CPC title