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Multiband base station antennas having wideband cloaked radiating elements and/or side-by-side arrays that each contain at least two different types of radiating elements

A technology of radiating elements and base station antennas, which is applied to the combination of antenna units with different polarization directions, the antenna arrays that are powered on separately, and the devices that make the antennas work in different frequency bands at the same time, which can solve the problem of large width of base station antennas

Active Publication Date: 2021-12-14
COMMSCOPE TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, implementing these antennas in a commercially acceptable manner can be challenging because achieving a 65° azimuth HPBW antenna beam in the low-band typically requires a low-band radiating element of at least 200 mm wide
When two low-band arrays are placed side-by-side with a mid-band linear array placed in between, the base station antenna width can become unacceptably large

Method used

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  • Multiband base station antennas having wideband cloaked radiating elements and/or side-by-side arrays that each contain at least two different types of radiating elements
  • Multiband base station antennas having wideband cloaked radiating elements and/or side-by-side arrays that each contain at least two different types of radiating elements
  • Multiband base station antennas having wideband cloaked radiating elements and/or side-by-side arrays that each contain at least two different types of radiating elements

Examples

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Embodiment Construction

[0051] Traditionally, the low-band frequency range extends between 696-960 MHz, and cellular services in the low-band frequency range are supported in several different frequency bands. More recently, the opening of the 617-698 MHz frequency band for cellular services has created a need for base station antennas comprising broadband linear arrays of low-band radiating elements spanning the entire 617-960 MHz range or at least the 617-896 MHz frequency range. These base station antennas also typically include two or more linear arrays of mid-band radiating elements mounted in close proximity to the low-band linear arrays in order to provide a compact antenna design . Unfortunately, however, undesirable interactions between low-band and mid-band radiating elements that may occur due to the close proximity of adjacent arrays may negatively affect the antenna beam formed by mid-band linear arrays. For example, as described above, the low-band radiating element may be designed to ...

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Abstract

Radiating elements for a base station antennas include a first dipole radiator that extends along a first axis, the first dipole radiator including a first dipole arm and a second dipole arm. At least one of the first and second dipole arms includes first and second spaced-apart conductive segments that are connected to each other via both a first inductor and a second inductor that are electrically in parallel with one another.

Description

Background technique [0001] The present invention relates generally to radio communications, and more particularly to base station antennas for cellular communications systems. [0002] Cellular communication systems are well known in the art. In a typical cellular communication system, a geographic area is divided into a series of areas called "cells," each cell being served by a base station. A base station may include baseband equipment, a radio, and a base station antenna configured to provide two-way radio frequency ("RF") communication with users located throughout the cell. In many cases, a cell may be divided into "sectors," with separate base station antennas providing coverage for each sector. The antennas are typically mounted on pylons with the radiation beam ("antenna beam") generated by each antenna directed outward to serve the corresponding sector. Typically, a base station antenna includes one or more phased arrays of radiating elements, wherein the radiati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q5/49H01Q1/52
CPCH01Q5/42H01Q1/521H01Q21/26H01Q1/246H01Q21/08H01Q21/062
Inventor 孙斌陈红辉李曰民
Owner COMMSCOPE TECH LLC