Raytheon Company

Jackson Ng

Charles G Gilbert

Jack H Anderson

Sergio A Pizarro

Robyn Jimenez

An antenna is provided from a dielectric wedge waveguide having an AMC wall feed structurecoupled thereto through a transition which matches the impedance of the AMC feed structure to dielectric wedge so as to ensure efficient transmission of RF signals between the AMC wall feed structure and the dielectric wedge. In some embodiments, the antenna may be implemented as a flush mounted or conformal antenna on an outer surface of a supporting platform.

Directive artificial magnetic conductor (AMC) dielectric wedge waveguide antenna

A fixed beam ramp electromagnetic band gap (EBG) antenna including a radiating element and an electromagnetic band gap (EBG) structure both disposed within a ramped cavity. The cavity is designed with the ramp leading to the EBG structure disposed about a base of the cavity. The radiating element can be disposed above the EBG structure and the EBG structure may have a plurality of unit cells. The EBG structure can be provided both, horizontally on the floor of the cavity and vertically along a back wall of the cavity. The use of both horizontal and vertical EBG structures combined with the ramped cavity increases the bandwidth and enhances the beam steering of the antenna system.

Directive fixed beam ramp EBG antenna

A rotationally polarized antenna includes a radiating element that is held in a skewed orientation with respect to an underlying polarization-dependent electromagnetic band gap (PDEBG) structure. The radiating element and the PDEBG structure are both housed within a conductive cavity. The radiating element, the PDEBG structure, and the cavity are designed together to achieve an antenna having improved operational characteristics (e.g., an enhanced circular polarization bandwidth, etc.). In some embodiments, the antenna may be implemented as a flush mounted or conformal antenna on an outer surface of a supporting platform.

Polarization dependent electromagnetic bandgap antenna and related methods

An antenna includes a radiating element that is held in a fixed orientation with respect to an underlying electromagnetic band gap (EBG) structure. In one embodiment, the radiating element and the EBG structure are both housed within a conductive cavity. The radiating element, the EBG structure, and the cavity are designed together to achieve an antenna having improved operational characteristics (e.g., enhanced bandwidth, beam steering, etc.). In some embodiments, the antenna may be implemented as a flush mounted or conformal antenna on an outer surface of a supporting platform.

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Tucson, AZ, United States of America

Jackson Ng