# US 10,483,652 B2 · Multi-beam antenna and multi-beam antenna array system including the same

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- Number: US 10,483,652 B2
- Document ID: US10483652B2
- Status: Granted
- Kind: B2
- Application number: 15/496,555
- Filed: 2017-04-25
- Published: 2017-11-02
- Granted: 2019-11-19
- Earliest claimed: 2016-05-02
- Assignees: Ajou University Industry-Academic Cooperation Foundation
- Applicants: Ajou University Industry-Academic Cooperation Foundation
- Inventors: Ikmo Park; Tran Huy Hung
- Web page: https://patentgrep.com/patent/US10483652B2

## CPC

- H01Q 21/0006: {Particular feeding systems}
- H01Q 1/48: Earthing means; Earth screens; Counterpoises
- H01Q 9/285: {Planar dipole (H01Q9/065 takes precedence; patch antenna H01Q9/0407)}
- H01Q 19/108: {Combination of a dipole with a plane reflecting surface (H01Q19/106 takes precedence; strip line H01Q9/065)}
- H01Q 21/0031: {Parallel-plate fed arrays; Lens-fed arrays (multibeam arrays H01Q25/008)}
- H01Q 21/065: {Patch antenna array}
- H01Q 21/08: the units being spaced along or adjacent to a rectilinear path {(waveguide fed H01Q21/0037)}
- H01Q 21/26: Turnstile or like antennas comprising arrangements of three or more elongated elements disposed radially and symmetrically in a horizontal plane about a common centre
- H01Q: ANTENNAS, i.e. RADIO AERIALS (radiators or antennas for microwave heating H05B6/72)

## Abstract

A multi-beam antenna array system according to an exemplary embodiment of the present disclosure includes: a grounding surface; a plurality of multi-beam antennas which each includes a dielectric substrate and a radiating part formed on the dielectric substrate so as to radiate electromagnetic waves, and is disposed above the grounding surface so as to be spaced apart from each other; and a feed circuit which is formed on a lower portion of the grounding surface, and supplies electric power to the plurality of multi-beam antennas so that the electromagnetic waves are radiated in different directions from the plurality of multi-beam antennas.

## Claims

### Claim 1

A multi-beam antenna comprising:
a dielectric substrate; and
a radiating part which includes a first radiating element and a second radiating element formed on the dielectric substrate so as to radiate electromagnetic waves,
wherein the first radiating element includes a first upper radiating member which is formed on an upper portion of the dielectric substrate at one side based on a first direction of the dielectric substrate, and a first lower radiating member which is formed on a lower portion of the dielectric substrate at the other side based on the first direction of the dielectric substrate, and the second radiating element includes a second upper radiating member which is formed on the upper portion of the dielectric substrate at one side based on a second direction of the dielectric substrate, and a second lower radiating member which is formed on the lower portion of the dielectric substrate at the other side based on the second direction of the dielectric substrate,
the multi-beam antenna further comprising:
a connecting part which includes a semi-ring-shaped first connecting portion that connects the first upper radiating member and the second upper radiating member, and a semi-ring-shaped second connecting portion that connects the first lower radiating member and the second lower radiating member.

### Claim 2 (depends on 1)

The multi-beam antenna according to claim 1, wherein the electromagnetic wave is a linearly polarized wave or a circularly polarized wave.

### Claim 3 (depends on 1)

The multi-beam antenna according to claim 1, further comprising:
a plurality of parasitic elements which is disposed on the upper portion of the dielectric substrate between the first radiating element and the second radiating element so as to expand a bandwidth of the electromagnetic wave.

### Claim 4 (depends on 3)

The multi-beam antenna according to claim 3, wherein the plurality of parasitic elements is disposed to be spaced apart from the first radiating element and the second radiating element.

### Claim 5 (depends on 3)

The multi-beam antenna according to claim 3, wherein the plurality of parasitic elements has a structure in which the parasitic elements, which face each other, are symmetrical to each other based on an intersection point where the first radiating element and the second radiating element are orthogonal to each other.

### Claim 6 (depends on 1)

The multi-beam antenna according to claim 1, further comprising:
a power supply line which is connected to a lower portion of the radiating part and supplies electric power to the radiating part.