SUBSURFACE PHASED-ARRAY ANTENNA Russian patent published in 2001 - IPC

FIELD: radio engineering; transmitting and/or receiving subsurface antenna arrays. SUBSTANCE: array has six planar antennas 1 placed in pairs symmetrically to aperture center of array on its diagonal lines. Each antenna 1 has pair of radial radiators 2 and pair of tangential radiators 3. Radial and tangential radiators 2 and 3, respectively, are orthogonally mounted. Radial radiators 2 are made in the form of equilateral triangles and tangential ones 3, in the form of quadrangles with unequal angles at apexes. Radial and tangential radiators 2 and 3 are connected through coaxial cable sections 5, 6 to feeder line 7. Radiators related to antenna 1 are mounted at opposite angles of one diagonal line of array aperture and use phase-for-phase power supply. Screening sheaths of coaxial cable sections 5, 6 are interconnected in center and grounded. Radiators are phased out in desired direction by connecting respective radiators 2 and 3 to feeder line according to specific program. Subsurface phased-array antenna is designed for operation in comprehensive ultrashort- and short- wave bands. EFFECT: enlarged operating frequency range of antenna. 2 cl, 19 dwg