Multi-band base station antennas having radome effect cancellation features

Abstract

A base station antenna includes a radome and an antenna assembly that is mounted within the radome. The antenna assembly includes a backplane that includes a first reflector, a first array that includes a plurality of first radiating elements mounted to extend forwardly from the first reflector, a second reflector mounted to extend forwardly from the first reflector and a second array that includes a plurality of second radiating elements mounted to extend forwardly from the second reflector. The first radiating elements extend a first distance forwardly from the first reflector and the secondradiating elements extend a second distance forwardly from the second reflector, where the first distance exceeds the second distance.

Description

[0001] Cross References to Related Applications [0002] This application is related to U.S. Provisional Patent Application Serial No. 62 / 829,171, filed April 4, 2019, and to U.S. Provisional Patent Application Serial No. 62 / 694,316, filed July 5, 2018, the entire contents of each Provisional Patent Application Incorporated herein by reference as if fully set forth herein. Background technique [0003] The present invention relates generally to radio communications, and more particularly to base station antennas for cellular communications systems. [0004] Cellular communication systems are well known in the art. In cellular communication systems, a geographic area is divided into a series of areas or "cells" served by respective base stations. Each base station may include one or more base station antennas configured to provide two-way radio frequency ("RF") communications with users within the cell served by the base station. In many cases, each base station is divided i...

AI Technical Summary

Problems solved by technology

The use of some of the existing cellular frequency bands, which may be almost an order of magnitude higher in frequency than these bands, can lead to new challenges in base station antenna design, especially in multi-band arrays that include linear arrays of radiating elements designed to operate in different frequency bands. with antenna

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