Locomotive antenna arrays

摘要

An antenna array is provided having multiple antenna elements mountable to the roof of a locomotive. Each of the antenna elements has a separate signal path of one or more conductive elements in a housing and shares a common hole or opening to outside the housing through which the signal path of each antenna element is extendable. The signal path of each antenna element then extends via a common access hole in the roof of the locomotive for enabling one or more of passage of signals to or from the antenna element. The access hole is below the array when the common hole is along the bottom of the housing, and elsewhere along the roof when the common hole is along a side of the housing. Two of the antenna arrays may be mounted in a parallel relationship spaced from each other along the locomotive roof and share the same or a different access hole in such roof.

主权项

1. An antenna array comprising:
a plurality of antenna elements in which two or more of said antenna elements operate at different frequency bands; a housing along which said plurality of antenna elements are mounted, and said housing is mountable onto a roof of a locomotive; and each of said antenna elements has a separate signal path of one or more conductive elements in said housing and shares a common hole along said housing to outside said housing through which the signal path of each antenna element is extendable, wherein the signal path of each of said antenna elements extends via a common access opening in the roof of the locomotive when said housing is mounted onto the roof of the locomotive, and a connector associated with each of said antenna elements is disposed in a different opening of a plate fixed to said housing for enabling access from outside said housing to the signal path of each of said antenna elements via said connector, in which said plate is one of within said housing facing said common hole or at least partially extends through said common hole.