# US 2014/0191914 A1 · Multi-channel antenna device

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- Number: US 2014/0191914 A1
- Document ID: US20140191914A1
- Status: Published application
- Kind: A1
- Application number: 14/084,689
- Filed: 2013-11-20
- Published: 2014-07-10
- Earliest claimed: 2013-01-07
- Assignees: Electronics and Telecommunications Research Institute
- Applicants: Electronics and Telecommunications Research Institute
- Inventors: JeongHo JU; Soon Young EOM; Joung Myoun KIM; Myung Sun SONG; Jae Ick CHOI
- Web page: https://patentgrep.com/patent/US20140191914A1

## CPC

- H01Q 9/0464: {Annular ring patch}
- H01Q 9/28: 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)
- 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 25/002: {providing at least two patterns of different beamwidth; Variable beamwidth antennas}
- H01Q: ANTENNAS, i.e. RADIO AERIALS (radiators or antennas for microwave heating H05B6/72)

## Abstract

A device includes a feeding circuitry, a basic mode radiator for forming a basic mode main beam pattern having one or two orthogonal polarizations based on first two orthogonal inputs received from the feeding circuitry, and a higher-order mode radiator for forming a higher-order mode conical beam pattern having one or two orthogonal polarizations based on second two orthogonal inputs received from the feeding circuitry.

## Claims

### Claim 1

A multi-channel antenna device, comprising:
a feeding circuitry; and
a basic mode radiator for forming a basic mode main beam pattern having one or two orthogonal polarizations based on first two orthogonal inputs received from the feeding circuitry; and
a higher-order mode radiator for forming a higher-order mode conical beam pattern having one or two orthogonal polarizations based on second two orthogonal inputs received from the feeding circuitry.

### Claim 2 (depends on 1)

The multi-channel antenna device of claim 1, wherein the basic mode radiator and the higher-order mode radiator has a complex stack type radiator structure in which the basic mode radiator is formed over the higher-order mode radiator with a dielectric interposed between the basic mode radiator and the higher-order mode radiator.

### Claim 3 (depends on 2)

The multi-channel antenna device of claim 2, wherein the dielectric is a plastic element.

### Claim 4 (depends on 1)

The multi-channel antenna device of claim 1, wherein the basic mode radiator is a printed-cross dipole antenna.

### Claim 5 (depends on 1)

The multi-channel antenna device of claim 1, wherein the basic mode radiator is a stereographic dipole antenna.

### Claim 6 (depends on 1)

The multi-channel antenna device of claim 1, wherein the basic mode radiator is a single or stack microstrip antenna.

### Claim 7 (depends on 1)

The multi-channel antenna device of claim 1, wherein the higher-order mode radiator is a single or stack annular-ring antenna.

### Claim 8 (depends on 1)

The multi-channel antenna device of claim 1, wherein the higher-order mode radiator is a single or stack circular antenna.

### Claim 9 (depends on 1)

The multi-channel antenna device of claim 1, wherein a portion of the higher-order mode radiator is used as a ground surface of the basic mode radiator.

### Claim 10 (depends on 9)

The multi-channel antenna device of claim 9, wherein the portion is a stack parasitic element of the higher-order mode radiator.

### Claim 11 (depends on 10)

The multi-channel antenna device of claim 10, wherein a short region is placed in a central part of the stack parasitic element.

### Claim 12 (depends on 9)

The multi-channel antenna device of claim 9, wherein the ground surface comprises a conductor wall formed in a specific height along an outer circumferential surface of the ground surface.

### Claim 13 (depends on 12)

The multi-channel antenna device of claim 12, wherein the conductor wall provides a backward radiation suppression function.

### Claim 14 (depends on 1)

The multi-channel antenna device of claim 1, wherein a portion of the higher-order mode radiator is used as a reflector structure of the basic mode radiator.

### Claim 15 (depends on 14)

The multi-channel antenna device of claim 14, wherein the portion is a stack parasitic element of the higher-order mode radiator.

### Claim 16 (depends on 1)

The multi-channel antenna device of claim 1, wherein the feeding circuitry performs a 90-degree phase delay function and an input impedance matching function when a circular polarization is necessary.