STACKED BICONICAL OMNIDIRECTIONAL ANTENNA

摘要

An omnidirectional antenna with minimal gain variation over the 360 DEG azimuth. A plurality of biconical antennas are stacked vertically. A radome covering the antenna and cylindrically encasing the antenna supports the stack of biconical antennas. A bundle of transmission lines is helically wound about the cylindrical periphery of the biconical antennas, preferably at an angle between 37 DEG and 41 DEG . Each biconical antenna is formed by two truncated flared apart reflecting surfaces that are connected by a nonconductive spacing collar between their truncated portions.