Compact, broadband, omni antenna for indoor/outdoor applications

摘要

An antenna, including a broadband bi-conical antenna including a lower antenna element and an upper conical antenna element, the lower antenna element including a lower conical antenna element and a meandered counterpoise element, which meandered counterpoise element is disposed at a base end of the lower conical antenna element and is integrally formed therewith, a reflector having a projection in a plane generally perpendicular to a vertical axis of the bi-conical radiating element, and a feed arrangement for feeding the bi-conical radiating element.

主权项

1. An antenna, comprising:
a broadband bi-conical antenna comprising a lower antenna element and an upper conical antenna element, said lower antenna element comprising a lower conical antenna element and a meandered counterpoise element, which meandered counterpoise element is disposed at a base end of said lower conical antenna element and is integrally formed therewith; a reflector having a projection in a plane generally perpendicular to a vertical axis of said bi-conical radiating element; a pair of gamma matching elements for inducing a distributed shunt reactance between said upper conical antenna element and said lower antenna element, said pair of gamma matching elements comprising a first and a second gamma matching element being symmetrically arranged with respect to said vertical axis, a first end of each one of said first and second gamma matching elements being connected to said upper conical antenna element, a second end of each one of said first and second gamma matching elements being connected to said lower conical antenna element; and a feed arrangement for feeding said bi-conical radiating element, said feed arrangement comprising a port, said port comprising a feeding cable having an inner element connected to said upper conical antenna element and an outer element connected to said lower conical antenna element.