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Lensed base station antennas having functional structures that provide a step approximation of a luneberg lens

A base station antenna and lens technology, which is applied to antenna arrays that are energized separately, antenna unit combinations with different polarization directions, antennas, etc., can solve the problems of increasing the size, weight and cost of base station antennas

Pending Publication Date: 2021-06-15
COMMSCOPE TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Unfortunately, however, the use of RF lenses can increase the size, weight, and cost of base station antennas, and there can be other problems associated with using RF lenses

Method used

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  • Lensed base station antennas having functional structures that provide a step approximation of a luneberg lens
  • Lensed base station antennas having functional structures that provide a step approximation of a luneberg lens
  • Lensed base station antennas having functional structures that provide a step approximation of a luneberg lens

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Embodiment Construction

[0051] As mentioned above, one method for implementing sectorization is to provide the base station antenna with two or more linear arrays of radiating elements directed at different parts of the sector, and use RF lenses to reduce the The beamwidth of the antenna beam such that the antenna beam is sized to provide coverage to a corresponding portion of the sector. The RF lens includes RF energy focusing material that narrows the beamwidth of the antenna beam. A variety of different RF energy focusing materials can be used to form RF lenses. For example, various dielectric materials are commercially available that can be used to focus RF energy incident thereon. In general, the higher the dielectric constant of the lens material, the more RF focusing will occur. So-called "artificial" dielectric materials, including conductive materials dispersed within a dielectric base material to provide composite materials with electromagnetic properties similar to those of high-permitti...

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Abstract

A lensed base station antenna includes a first array of radiating elements that are configured to transmit respective sub-components of a first RF signal and an RF lens positioned to receive electromagnetic radiation from a first of the radiating elements. The RF lens includes a lens casing, an RF energy focusing material within the lens casing and a first heat dissipation element that extends through the RF energy focusing material. The RF lens is configured to be at least a three step approximation of a Luneberg lens along a boresight pointing direction of the first of the radiating elements.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to U.S. Provisional Patent Application Serial No. 62 / 756,697, filed November 7, 2018, which is incorporated herein by reference in its entirety. technical field [0003] The present invention relates generally to radio communications, and more particularly to lensed antennas for cellular communications systems. Background technique [0004] 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 typicall...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q15/08H01Q1/02H01Q1/24H01Q19/06
CPCH01Q15/08H01Q1/246H01Q19/062H01Q21/08H01Q1/42H01Q21/26H01Q19/06H01Q1/24
Inventor M·L·齐默尔曼
Owner COMMSCOPE TECH LLC