ANNULAR ANTENNA Russian patent published in 2002 - IPC

FIELD: antennas for television and radio communications with objects in any azimuthal direction. SUBSTANCE: annular antenna designed for operation in very-high- and ultrahigh frequency bands in broad band primarily up to directivity pattern in azimuth plane has dipoles disposed on sides of square; in addition it is provided with collecting line of logoperiod vibrate antenna with dipole arranged at power supply point of each dipole to organize active areas. Logoperiod vibrate antenna are disposed in planes of side surfaces of conventional truncated tetrahedral pyramid (obelisk). EFFECT: enhanced power characteristics of antenna. 2 cl, 3 dwg