Multi-polarized radiation element and antenna having same

• US 10,707,563 B2
• Filed: 03/08/2018
• Issued: 07/07/2020
• Est. Priority Date: 09/11/2015
• Status: Active Grant

• Current Assignee: KMW Incorporated
• Original Assignee: KMW Incorporated
• Inventors: So, Sung-Hwan, Jung, Hun-Jung, Choi, Kwang-Seok, Choi, Jae-Jung
• Primary Examiner(s): Magallanes, Ricardo I
• Application Number:
  US15/915,087
• Publication Number:
  US 20180198191A1
• Time in Patent Office: 852 Days
• Field of Search: 343797, 343808, 343799, 343796, 343879, 343795, 343810
• CPC Class Codes: H01Q 1/246 specially adapted for base stations
• CPC Class Codes: H01Q 13/08 Radiating ends of two-conductor microwave transmission lines, e.g. of coaxial lines, of microstrip lines
• CPC Class Codes: H01Q 19/108 Combination of a dipole with a plane reflecting surface H01Q19/106 takes precedence; strip line H01Q9/065
• CPC Class Codes: H01Q 21/0025 Modular arrays
• CPC Class Codes: H01Q 21/0075 Stripline fed arrays H01Q21/065 takes precedence
• CPC Class Codes: H01Q 21/24 Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction circularly polarised patch antennas H01Q9/0428; circularly polarised horns H01Q13/0241; cross-polarised horns H01Q13/0258; polarisation converters H01Q15/242; cross-polarised rear feeds H01Q19/136; crossed polarisation dual antenna H01Q25/001
• CPC Class Codes: 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
• CPC Class Codes: H01Q 5/40 Imbricated or interleaved structures; Combined or electromagnetically coupled arrangements, e.g. comprising two or more non-connected fed radiating elements
• CPC Class Codes: H01Q 9/16 with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole H01Q9/44 takes precedence

Abstract

A multi-polarized radiating element of the present disclosure includes first, second, third, and fourth radiating arms arranged in a four-way symmetrical manner on a plane; a first feeding line commonly fed to the fourth radiating arm and the first radiating arm, and commonly grounded to the second radiating arm and the third radiating arm; and a second feeding line commonly fed to the first radiating arm and the second radiating arm, and commonly grounded to the third radiating arm and the fourth radiating arm.

Claims

1. A multi-polarized radiating element, comprising:

first, second, third, and fourth radiating arms sequentially arranged clockwise in a four-way symmetrical manner on a plane about a vertical axis when viewed from above;

a first feeding line comprising a first inner conductor and a first outer conductor surrounding the first inner conductor, wherein the first inner conductor is fed in common to the fourth radiating arm and the first radiating arm, and the first outer conductor is grounded in common to the second radiating arm and the third radiating arm; and

a second feeding line comprising a second inner conductor and a second outer conductor surrounding the second inner conductor, wherein the second inner conductor is fed in common to the first radiating arm and the second radiating arm, and the second outer conductor is grounded in common to the third radiating arm and the fourth radiating arm,

wherein a vector sum of currents generated along the first and second radiating arms, respectively, is formed in a direction at 45 degrees clockwise from the first arm with respect to the vertical axis, and a vector sum of currents generated along the first and fourth radiating arms, respectively, is formed in a direction at 45 degrees counterclockwise from the first arm with respect to the vertical axis.

2. The multi-polarized radiating element of claim 1,

wherein each of the first to fourth radiating arms is individually supported by a support fixture forming a balun structure, and wherein the support fixtures supporting the first to fourth radiating arms are installed to be spaced at a pre-designed interval apart from each other.

3. The multi-polarized radiating element of claim 2,

wherein each of the first feeding line and the second feeding line has a structure of a stripline transmission line having a first stripline and a second stripline as a feeding conductor portion, respectively,

wherein the first stripline is installed in the shape that is placed between the support fixture of the second radiating arm and the support fixture of the third radiating arm, and is extended between the support fixture of the fourth radiating arm and the support fixture of the first radiating arm to deliver a feeding signal in common to the fourth radiating arm and the first radiating arm in a capacitance coupling method, and

wherein the second stripline is installed in the shape that is placed between the support fixture of the third radiating arm and the support fixture of the fourth radiating arm, and is extended between the support fixture of the first radiating arm and the support fixture of the second radiating arm to deliver a feeding signal in common to the first radiating arm and the second radiating arm in a capacitance coupling method.

4. The multi-polarized radiating element of claim 1,

wherein each of the first feeding line and the second feeding line has a balun structure comprising a coaxial line,

wherein the first inner conductor of the first feeding line is connected in common to the fourth radiating arm and the first radiating arm, and the first outer conductor of the first feeding line is connected in common to the second radiating arm and the third radiating arm, and

wherein the second inner conductor of the second feeding line is connected in common to the first radiating arm and the second radiating arm, and the second outer conductor of the second feeding line is connected in common to the third radiating arm and the fourth radiating arm.

5. The multi-polarized radiating element of claim 1,

wherein the arrangements of the first to fourth radiating elements overall indicate a ‘

V’

shape on a plane.

7. The multi-polarized radiating element of claim 2,

wherein the arrangements of the first to fourth radiating elements overall indicate a ‘

V’

shape on a plane.

8. The multi-polarized radiating element of claim 3,

wherein the arrangements of the first to fourth radiating elements overall indicate a ‘

V’

shape on a plane.

9. The multi-polarized radiating element of claim 4,

wherein the arrangements of the first to fourth radiating elements overall indicate a ‘

V’

shape on a plane.

6. An antenna having a multi-polarized radiating element, comprising:

a reflector;

at least one first radiating element of a first band installed on the reflector; and

at least one second or third radiating element of a second band or a third band installed on the reflector,

wherein the first radiating element comprises;

first, second, third, and fourth radiating arms sequentially arranged clockwise in a four-way symmetrical manner on a plane about a vertical axis when viewed from above,

a first feeding line comprising a first inner conductor and a first outer conductor surrounding the first inner conductor, wherein the first inner conductor is fed in common to the fourth radiating arm and the first radiating arm, and the first outer conductor is grounded in common to the second radiating arm and the third radiating arm, and

a second feeding line comprising a second inner conductor and a second outer conductor surrounding the second inner conductor, wherein the second inner conductor is fed in common to the first radiating arm and the second radiating arm, and the second outer conductor is grounded in common to the third radiating arm and the fourth radiating arm,

wherein a vector sum of currents generated along the first and second radiating arms, respectively, is formed in a direction at 45 degrees clockwise from the first arm with respect to the vertical axis, and a vector sum of currents generated along the first and fourth radiating arms, respectively, is formed in a direction at 45 degrees counterclockwise from the first arm with respect to the vertical axis.