Antenna, smart window, and method of fabricating antenna

Patent metadata

Field	Value
Publication number	US-11271303-B2
Application number	US-201916756111-A
Country	US
Kind code	B2
Filing date	May 24, 2019
Priority date	Jan 3, 2019
Publication date	Mar 8, 2022
Grant date	Mar 8, 2022

Abstract

An antenna is provided. The antenna includes a substantially transparent base substrate; a first pattern having a first feed point and a second pattern having a second feed point spaced apart from each other; a first feed line electrically connected to the first pattern through the first feed point; and a second feed line electrically connected to the second pattern through the second feed point. A first width along a first direction, of the first pattern, gradually increases along a second direction. A second width along the first direction, of the second pattern, gradually increases along a third direction substantially opposite to the second direction. A third width along a fourth direction, of the first feed line, gradually increases along a fifth direction. A fourth width along a sixth direction, of the second feed line, gradually increases along a seventh direction.

First claim

What is claimed is:

1. An antenna, comprising:
a substantially transparent base substrate;
a first pattern having a first feed point and a second pattern having a second feed point spaced apart from each other;
a first feed line electrically connected to the first pattern through the first feed point;
a second feed line electrically connected to the second pattern through the second feed point; and
a plurality of metal nano-wires disposed on sides of the first pattern, sides of the second pattern, sides of the first feed line, and sides of the second feed line;
wherein a first width along a first direction, of the first pattern, gradually increases along a second direction substantially perpendicular to the first direction;
a second width along the first direction, of the second pattern, gradually increases along a third direction substantially opposite to the second direction and substantially perpendicular to the first direction;
a third width along a fourth direction, of the first feed line, gradually increases along a fifth direction substantially perpendicular to the fourth direction; and
a fourth width along a sixth direction, of the second feed line, gradually increases along a seventh direction substantially perpendicular to the sixth direction.

2. The antenna of claim 1 , wherein the first pattern and the second pattern have a two-fold symmetry with respective to a two-fold axis intersecting a midpoint of a line connecting the first feed point and the second feed point, and perpendicular to the substantially transparent base substrate; and
the first pattern and the second pattern have a substantially mirror symmetry with respect to a plane of mirror symmetry intersecting the midpoint of the line connecting the first feed point and the second feed point, and perpendicular to the substantially transparent base substrate.

3. The antenna of claim 2 , wherein the first feed line and the second feed line have a substantially mirror symmetry with respect to the plane of mirror symmetry.

4. The antenna of claim 2 , wherein a first normal distance between the first feed point to a side of the first pattern away from the first feed point is in a range of approximately 10 mm to approximately 100 mm;
a second normal distance between the second feed point to a side of the second pattern away from the second feed point is in a range of approximately 10 mm to approximately 100 mm; and
a distance between the first feed point and the second feed point is in a range of approximately 0.1 mm to approximately 10 mm.

5. The antenna of claim 1 , wherein the first feed point and the second feed point are closest points between the first pattern and the second pattern with respect to each other.

6. The antenna of claim 5 , wherein the first feed line and the second feed line have a substantially right triangular shape; and
one of two right angle sides of the first feed line is directly adjacent to one of two right angle sides of the second feed line.

7. The antenna of claim 5 , wherein a first side of the first feed line away from the first feed point has a length in a range of approximately 5 mm to approximately 15 mm; and
a second side of the second feed line away from the second feed point has a length in a range of approximately 5 mm to approximately 15 mm.

8. The antenna of claim 5 , further comprising a first metal structure and a second metal structure;
wherein the first metal structure is electrically connected to a first side of the first feed line away from the first feed point; and
the second metal structure is electrically connected to a second side of the first feed line away from the second feed point.

9. The antenna of claim 1 , wherein the first pattern, the second pattern, the first feed line, and the second feed line are in a same layer and comprise a same conductive material.

10. The antenna of claim 1 , wherein the fourth direction and the six direction are substantially perpendicular to the first direction; and
the fifth direction and the seventh direction are substantially parallel to the first direction.

11. The antenna of claim 1 , wherein the first pattern has a substantial isosceles right triangular shape having the first feed point as one of its apexes; and the second pattern has an isosceles right triangular shape having the second feed point as one of its apexes.

12. The antenna of claim 1 , wherein a signal emitted from the antenna is in a range of approximately 0.8 GHz to approximately 6 GHz.

13. The antenna of claim 1 , wherein each of the first pattern and the second pattern comprises indium tin oxide materials.

14. The antenna of claim 1 , wherein a surface resistance of each of the first pattern and the second pattern is no more than 10 ohms.

15. The antenna of claim 1 , wherein a thickness of each of the first pattern and the second pattern is in a range of approximately 300 nm to approximately 800 nm.

16. The antenna of claim 1 , wherein the substantially transparent base substrate is a glass substrate.

17. A smart window, comprising the antenna of claim 1 , and one or more signals lines connected to the antenna.

18. The antenna of claim 1 , comprising a first unitary structure and a second unitary structure;
wherein the first unitary structure comprises the first feed point, the first pattern, and the first feed line branching out from the first feed point;
the first feed point, the first pattern, and the first feed line are in a same layer;
the second unitary structure comprises the second feed point, the second pattern, and the second feed line branching out from the second feed point;
the second feed point is spaced apart from the first feed point; and
the second feed point, the second pattern and the second feed line are in a same layer.

19. A method of fabricating an antenna, comprising:
forming a substantially transparent base substrate;
forming a first pattern having a first feed point and a second pattern having a second feed point spaced apart from each other;
forming a first feed line electrically connected to the first pattern through the first feed point
forming second feed line electrically connected to the second pattern through the second feed point; and
forming a plurality of metal nano-wires disposed on sides of the first pattern, sides of the second pattern, sides of the first feed line, and sides of the second feed line;
wherein the first pattern is formed to have a first width along a first direction, and gradually increasing along a second direction substantially perpendicular to the first direction;
the second pattern is formed to have a second width along the first direction, and gradually increasing along the third direction substantially opposite to the second direction and substantially perpendicular to the first direction;
the first feed line is formed to have a third width along a fourth direction, and gradually increasing along the fifth direction substantially perpendicular to the fourth direction; and
the second feed line is formed to have a fourth width along a sixth direction, and gradually increasing along a seventh direction substantially perpendicular to the sixth direction.

20. The method of claim 19 , comprising forming a first unitary structure and forming a second unitary structure;
wherein the first unitary structure is formed to comprise the first feed point, the first pattern, and the first feed line branching out from the first feed point;
the first feed point, the first pattern, and the first feed line are

Assignees

• Boe Technology Group Co Ltd
• Univ Beijing Posts & Telecomm

Inventors

• Yao Yuan
• Wang Lei
• Sun tuo

Classifications

• H01Q1/38

  formed by a conductive layer on an insulating support {(patch antennas H01Q9/0407; microstrip dipole antennas H01Q9/065; microstrip slot antennas H01Q13/106; transmission line microstrip antennas H01Q13/206; manufacturing reflecting surfaces using insulating material for supporting the reflecting surface  H01Q15/142)} · CPC title

• H01Q21/26

  Turnstile or like antennas comprising arrangements of three or more elongated elements disposed radially and symmetrically in a horizontal plane about a common centre · CPC title

• H01Q9/28

  Conical, cylindrical, cage, strip, gauze, or like elements having an extended radiating surface; Elements comprising two conical surfaces having collinear axes and adjacent apices and fed by two-conductor transmission lines (waveguide horns or mouths H01Q13/00; slot antennas H01Q13/00) · CPC title

• H01Q5/25

  Ultra-wideband [UWB] systems, e.g. multiple resonance systems; Pulse systems · CPC title

• H01Q9/065 Primary

  Microstrip dipole antennas (patch antenna H01Q9/0407) · CPC title