FLAT CAVITY ANTENNA (VERSIONS) Russian patent published in 2009 - IPC H01Q13/10 

FIELD: radio engineering.

SUBSTANCE: proposed flat cavity antenna, which includes a first low cavity resonator with a partially transparent wall and a second resonant cavity with communication holes, which differs in that the second resonant cavity, is installed inside the first resonant cavity. The first resonant cavity contains the first plate, the first and second volumetric cells, and the second plate, made with emitting holes. The second resonant cavity is made in the form of a coaxial resonator with open ends; slots are made on the outer conductor of the coaxial resonator, the outer and inner coaxial conductors are connected together with a short-circuiting switch. The second resonator is connected with the feeder line.

EFFECT: small sizes of antennas, good antenna matching with the feeder line, low level of lateral and rear emission, low level of cross polarisation emission, high efficiency of the antennas, low losses of electromagnetic energy in the feeder line, low antenna noise temperature, high level of electromagnetic compatibility, aesthetic look.

11 cl, 9 dwg