Radio communication antenna having narrow beam width

Patent metadata

Field	Value
Publication number	US-10224643-B2
Application number	US-201514941016-A
Country	US
Kind code	B2
Filing date	Nov 13, 2015
Priority date	May 14, 2013
Publication date	Mar 5, 2019
Grant date	Mar 5, 2019

Abstract

In the present invention, a radio communication antenna having a narrow beam width comprises: a reflecting plate provided in the form of a plate of rectangular shape; and one radiating module disposed on the reflecting plate and generating x-polarized waves. Here: the radiating module comprises four radiating elements of dipole structure; the four radiating elements are respectively disposed at four edge portions of the reflecting plate, and each comprises two radiating arms placed in the direction extending along both sides relative to the edges; and, among the four radiating elements, those radiating elements that face each other diagonally are linked in movement so as to generate one of the x-polarized waves.

First claim

What is claimed is:

1. A radio communication antenna having a narrow beam width, the radio communication antenna comprising:
a reflective plate provided in the form of a tetragonal plate; and
a radiation module installed on the reflective plate and configured to generate crossed polarization,
wherein the radiation module comprises four radiation elements of a dipole structure, the four radiation elements are arranged at four corners of the reflective plate, respectively, two radiation arms extend along two edges with respect to one of the corners, and pairs of two radiation elements of the four radiation elements, which face each other in the diagonal direction interwork with each other and generate one polarization in the crossed polarization, and
a separate radiation module that installed at a central location of the radiation module formed by the four radiation elements on the reflective plate and generates an additional crossed polarization which combines with the crossed polarization to form a radiation beam having a predetermined beam width of the radio communication antenna, and the additional crossed polarization has the same frequency as the crossed polarization.

2. The radio communication antenna of claim 1 , wherein a distance between the radiation elements which face each other in a diagonal direction is determined to be maximal within a range of 1λ in consideration of the processed frequency.

3. The radio communication antenna of claim 2 , wherein the reflective plate is designed not to have an area that deviates from an installation area of the four radiation elements and substantially extends to an exterior of the radio communication antenna.

4. The radio communication antenna of claim 1 , further comprising:
four directors of a conductive material that are fixedly installed in the directions in which beams of the four radiation elements are radiated.

5. The radio communication antenna of claim 4 , wherein the four directors have metal bar shapes that extend along the directions of polarizations generated by the radiation elements, and are installed on the upper sides of the radiation elements corresponding to a feeding portion between two radiation arms.

Assignees

• Kmw Inc

Inventors

• Moon Young-Chan
• Choi Oh-Seog
• Kim In-Ho
• Kim Sang-Hyeong

Classifications

• H01Q21/24

  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 title

• H01Q15/14

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

• H01Q19/108

  Combination of a dipole with a plane reflecting surface (H01Q19/106 takes precedence; strip line H01Q9/065) · CPC title

• H01Q1/246

  specially adapted for base stations · CPC title

• H01Q21/293

  one unit or more being an array of identical aerial elements (adaptive arrays H01Q3/2605) · CPC title