Wideband antenna with low passive intermodulation attributes

摘要

An antenna assembly with wide bandwidth and low Passive Intermodulation (PIM) characteristics is described for use in Distributed Antenna Systems (DAS) and other applications which require low PIM levels. The antenna can be configured to cover multiple cellular frequency bands to provide a single antenna solution for use with multiple transceivers. A single conductor radiator design along with features integrated into the ground plane result in low PIM characteristics during high power transmission. One or multiple parasitic elements can be coupled to the driven antenna to enhance bandwidth while still maintaining low PIM characteristics.

主权项

1. An antenna assembly, comprising:
an antenna radiator extending vertically from a ground plane; the ground plane comprising a horizontally disposed conductive plate; and the antenna radiator formed from a monolithic conductor plate being cut and bent to form a vertically oriented planar body portion and a horizontal top portion disposed substantially perpendicular to the planar body portion; the antenna radiator connected to a transmission line conductor of a coaxial connector for driving the antenna radiator; wherein the antenna radiator is attached to the ground plane at a non-conductive support bracket; and wherein a non-conductive housing is positioned to contain the antenna radiator and ground plane therein.