Shakespeare Company. LLC

Gary A Martek

Henry R Jarman

John M Maynard

Leon Fulmer

John R Lewis, Jr

An antenna system includes a first antenna portion operating over a first range of frequencies, a second antenna portion operating over a second range of frequencies and an antenna matching network that receives a transmission line which includes a single conductor and a coaxial cable. The coaxial cable has an inner conductor insulated from an outer conductor, wherein the first antenna portion is fed by the single conductor and the outer conductor, and the second antenna portion is fed by the inner conductor.

Very wide band tactical vehicular antenna system

An antenna operable over a predetermined range of frequency includes a transmission line, a transformer network connected to one end of the transmission line, and at least one ferrite/powder iron network connected to an opposite end of the transformer network. The ferrite/powder iron network changes the effective electrical length of the antenna such that as the frequency of operation changes, the current distribution above and below the network changes in corresponding manner. A second ferrite/powder iron network may be serially positioned with respect to the other network, wherein both function to reduce the current thereabove. Accordingly, as the frequency of operation increases, the electrical height of the antenna decreases. The network also encompasses a way to safely dissipate otherwise destructive heat created by the operation of the antenna system at high radio-frequency power.

Low profile, broad band monopole antenna with heat dissipating ferrite/powder iron network and method for constructing the same

A wide band biconical antenna with a helical feed system comprises a printed circuit board (PCB) that maintains a plurality of antenna elements having an entry conic and a termination conic arranged about a common axis. Each of the antenna elements receive a signal from a signal splitter via respective feed lines that each have the same physical length. In addition, the antenna system includes a matching system disposed within the ground plane formed by the entry conic of each of the antenna elements. The antenna elements are retained within retention sections that maintain helical support channels that allow the feed lines to be arranged in a helical manner about the antenna elements.

Wide band biconical antenna with a helical feed system

A multiband antenna system includes a helical antenna having a first leg and a second leg wherein the first leg consists of a coaxial conductor. The multiband antenna also includes an antenna sub-system coupled to the helical antenna wherein the coaxial conductor feeds the antenna sub-system. A radome encloses components of the antenna system, and the radome may be covered by a radio-frequency transparent sock for concealment purposes.

Small, narrow profile multiband antenna

A biconical antenna includes an entry conic having an entry base opposite an entry vertex and a termination conic having a termination base opposite a termination vertex. The entry and termination conics share substantially the same axis and the entry vertex is adjacent the termination vertex. The transmission line is received by the entry conic and terminated in the termination conic. Together, the entry conic and the termination conic phase correct energy emanating from the transmission line. Another embodiment of the antenna comprises an entry conic having at least two sub-conics and a termination conic having at least two sub-conics. Each of the sub-conics having an integer multiple of a half-angle. The biconical antenna may also include a multi-conductor transmission line, wherein the biconical antennas are arranged in a co-linear relationship. Each of the multi-conductors is coupled to at least one of the plurality of biconical antennas. The biconical antennas may also be constructed on a circuit board substrate.

Wide band biconical antennas with an integrated matching system

A biconical antenna; an entry conic having an entry base opposite an entry vertex and a termination conic having a termination base opposite a termination vertex. The entry and termination conics share substantially the same axis and the entry vertex is adjacent the termination vertex. The transmission line is received by the entry conic and terminated in the termination conic. Together, the entry conic and the termination conic phase correct energy emanating from the transmission line. Another embodiment of the antenna comprises an entry conic having at least two sub-conics and a termination conic having at least two sub-conics. Each of the sub-conics having an integer multiple of a half-angle. The biconical antenna may also include a multi-conductor transmission line, wherein the biconical antennas are arranged in a co-linear relationship. Each of the multi-conductors is coupled to at least one of the plurality of biconical antennas.

An antenna protection device includes a pair of opposed contacts, an inner electrode connected to one of the contacts. The outer electrode is separated from the inner electrode by a dielectric layer and connected to the other of the contacts. A bleed-off resistor is connected between the opposed contacts to dissipate any accumulated. Corona rings may be employed around the foregoing components to improve operation of the device.

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Blythewood, SC, United States of America

Gary A Martek