An antenna unit and an antenna. The antenna may consist essentially of a first hollow truncated cone; and a first inverted hollow truncated cone. The first hollow truncated cone comprises a first base and a first top end. The first inverted hollow truncated cone comprises a second base and a second top end. A radius of the first base may exceed a radius of the second base. The he first top end faces the second top end. The first hollow truncated cone may be spaced apart from the first inverted hollow truncated cone and is electrically isolated from the first inverted truncated cone.

A deployable manpack antenna assembly comprises a transceiver antenna unit, a first support rod, a flexible conduit connector, a second support rod, a base unit, a latching unit, a clamping unit, and at least two sleeve retainer stops. The deployable manpack antenna assembly is configured for use in military applications, particularly relating to ground-party communications systems intended to be used in both communications-at-the-halt (CATH) and communications-on-the-move (COTM). The manpack antenna assembly operates in Ku, K and Ka bands for soldiers in the battlefield. The manpack antenna assembly comprises one of the two antennas, a biconical variant antenna, or an inverted-F variant antenna, both of which operate at Ku-band, K-band, and Ka-band simultaneously. The manpack antenna assembly boasts several features, including antenna deployment from folded to unfolded configurations, compact size, low mass, near 4 steradians coverage, low cost, wide bandwidth performance, and built-in radome for protection from severe environmental conditions.

A deployable manpack antenna assembly comprises a transceiver antenna unit, a first support rod, a flexible conduit connector, a second support rod, a base unit, a latching unit, a clamping unit, and at least two sleeve retainer stops. The deployable manpack antenna assembly is configured for use in military applications, particularly relating to ground-party communications systems intended to be used in both communications-at-the-halt (CATH) and communications-on-the-move (COTM). The manpack antenna assembly operates in Ku, K and Ka bands for soldiers in the battlefield. The manpack antenna assembly comprises one of the two antennas, a biconical variant antenna, or an inverted-F variant antenna, both of which operate at Ku-band, K-band, and Ka-band simultaneously. The manpack antenna assembly boasts several features, including antenna deployment from folded to unfolded configurations, compact size, low mass, near 4 steradians coverage, low cost, wide bandwidth performance, and built-in radome for protection from severe environmental conditions.

A device comprising a plurality of metallic conical radiators, said conical radiators substantially hollow having a vertex end and a base end, a first cylindrical portion disposed annularly about the base end of the conical portion, a metallic second cylindrical portion coupled to the vertex of the conical portion, said cylindrical portion having a threaded aperture, and an antenna feed coupled to the threaded aperture. The device may have patches disposed on a substrate as a one or multi-dimensional array. An RF feed may be coupled to the radiators.

An antenna assembly having a pair of generally cone-shaped conductive elements directed in divergent directions, with each pair of conductive elements including a conical sheet conductor and a cylindrical sheet conductor, and radiating wire conductors extending away from each cylindrical sheet conductor. A balun feed system is defined between the pair of conical sheet conductors. A radome assembly protects at least the radiating wire conductors from damage from external forces.

An antenna assembly having a pair of generally cone-shaped conductive elements directed in divergent directions, with each pair of conductive elements including a conical sheet conductor and a cylindrical sheet conductor, and radiating wire conductors extending away from each cylindrical sheet conductor. A balun feed system is defined between the pair of conical sheet conductors. A radome assembly protects at least the radiating wire conductors from damage from external forces.

An omni-directional antenna can include a feed disk, which can terminate at a feed disk apex, and a top element, which can include a nipple that terminates a top element apex. The feed disk and top element can be positioned so that the feed disk apex and the top element apex can be spaced-apart by a distance d, which can be chosen according to the desired frequency range and cable feed impedance. The feed disk and top element can also have respective bottom conical and top conical surfaces. When the feed disk and top element are positioned, the top and bottom conical surfaces can establish a respective first predefined angle relative to a horizontal plane and a second predefined angle relative to the horizontal plane, thereby extending the antenna frequency range. The predefined angles can be chosen according to the desired frequency range of operation and cable feed impedance.

An omni-directional antenna can include a feed disk, which can terminate at a feed disk apex, and a top element, which can include a nipple that terminates a top element apex. The feed disk and top element can be positioned so that the feed disk apex and the top element apex can be spaced-apart by a distance d, which can be chosen according to the desired frequency range and cable feed impedance. The feed disk and top element can also have respective bottom conical and top conical surfaces. When the feed disk and top element are positioned, the top and bottom conical surfaces can establish a respective first predefined angle relative to a horizontal plane and a second predefined angle relative to the horizontal plane, thereby extending the antenna frequency range. The predefined angles can be chosen according to the desired frequency range of operation and cable feed impedance.

An antenna assembly including a pair of sheet conductive elements directed in divergent directions, with the conductive elements including a conical sheet conductor and a cylindrical sheet conductor, and a plurality of radiating conductors conductively attached to and extending away from the sheet conductors. A feed point is defined between the conical sheet conductors of the pair of conductive elements. A balun is coupled to the feed point and a tubular radome protects at least portions of the plurality of radiating conductors.

An antenna assembly including a pair of sheet conductive elements directed in divergent directions, with the conductive elements including a conical sheet conductor and a cylindrical sheet conductor, and a plurality of radiating conductors conductively attached to and extending away from the sheet conductors. A feed point is defined between the conical sheet conductors of the pair of conductive elements. A balun is coupled to the feed point and a tubular radome protects at least portions of the plurality of radiating conductors.