Abstract: A multi band antenna feed, for supporting multiple frequency bands, is coupled to a reflector and includes a cylindrical core waveguide and at least three coaxial cylinders, encircling said cylindrical core waveguide and forming at least three coaxial waveguides, bounded between pairs of consecutive coaxial cylinders. The cylindrical core waveguide and the at least three coaxial waveguides provide a pair of sum and difference radiation patterns, for each frequency band: a C-band, an S-band and an L-band.

Abstract: A multi band antenna feed, for supporting multiple frequency bands, is coupled to a reflector and includes a cylindrical core waveguide and at least three coaxial cylinders, encircling said cylindrical core waveguide and forming at least three coaxial waveguides, bounded between pairs of consecutive coaxial cylinders. The cylindrical core waveguide and the at least three coaxial waveguides provide a pair of sum and difference radiation patterns, for each frequency band: a C-band, an S-band and an L-band.

Abstract: A system and method for combining multiple media types for demanding mobile communications environments, such as airborne and ship borne communications. The system facilitates integration of multiple media types into a common system, enabling use of the optimal communication system for each media type when possible, and transfer of media between communication systems as necessary. The system facilitates convergence of various media types to a common communications system, for example transferring voice and data over a common IP communications system, integrated control and management of the communications systems including interconnection configuration, priority, and accessibility with integrated management of shared resources. The system is designed to meet all Federal Aviation Administration (FAA) regulatory requirements.