Abstract: Antenna system for a vehicle including a first directive antenna device and a second antenna device for a frequency band of operation, and a reflector plane, where the first directive antenna device includes a first ground plane, a first dielectric substrate, a first antenna group shorted to the first ground plane and having a first radiating conductor and a second radiating conductor, forming a first configuration and connected to the reflector plane by transmission lines electromagnetically coupled to the frequency band of operation, the reflector plane, disposed forming an angle with respect to the first dielectric substrate, the first directive antenna device radiating in a direction of radiation, and the second antenna device, connected to the first directive antenna device, radiating in an opposing direction to the first directive antenna device.

Abstract: Antenna system for a vehicle including a first directive antenna device and a second antenna device for a frequency band of operation, and a reflector plane, where the first directive antenna device includes a first ground plane, a first dielectric substrate, a first antenna group shorted to the first ground plane and having a first radiating conductor and a second radiating conductor, forming a first configuration and connected to the reflector plane by transmission lines electromagnetically coupled to the frequency band of operation, the reflector plane, disposed forming an angle with respect to the first dielectric substrate, the first directive antenna device radiating in a direction of radiation, and the second antenna device, connected to the first directive antenna device, radiating in an opposing direction to the first directive antenna device.

Abstract: The invention relates to a flush-mounted aircraft, UAV or missile antenna system, which is an integral part of the fuselage (3) of an aircraft, UAV or missile. The antenna system comprises a surface (3) made of a conductive material and a resonant recess (4) formed in said conducting surface, wherein said recess is conformed to provide a resonant behavior in a selected operating frequency, the antenna system further comprising a radiating element (2) located within said recess and a feeding element (5) within said recess coupled to said radiating element.

Abstract: The invention relates to a flush-mounted aircraft, UAV or missile antenna system, which is an integral part of the fuselage (3) of an aircraft, UAV or missile. The antenna system comprises a surface (3) made of a conductive material and a resonant recess (4) formed in said conducting surface, wherein said recess is conformed to provide a resonant behaviour in a selected operating frequency, the antenna system further comprising a radiating element (2) located within said recess and a feeding element (5) within said recess coupled to said radiating element.

Abstract: In accordance with the teachings described herein, a multilevel ground-plane for a mobile device is provided. The multilevel ground-plane includes a first conductive surface, a second conductive surface, and a conducting strip that couples the first conducting surface to the second conducting surface. A mobile device having a multilevel ground-plane may include a printed circuit board, an antenna radiating element attached to a surface of the printed circuit board, and the multilevel ground plane integral with the printed circuit board and electromagnetically coupled to the antenna radiating element.