AIRCRAFT ANTENNA Russian patent published in 1999 - IPC

FIELD: antenna devices. SUBSTANCE: device has cylindrical resonator 1, which is open from one end and is equipped with flange 2, and filled with dielectric 3, coaxial connection 4 which is mounted on lower cover of cylindrical resonator 1 with sleeve 6 which serves as extension of outer housing of coaxial connection 4 inside cylindrical resonator 1, and central conductor 7 which is located inside this sleeve and serves as extension of central conductor of coaxial connection 4. Driver is designed as two halves of outer tube conductor 8, which are connected to one another and sleeve over coaxial connection 4 with space 9 (dotted line on drawing) in opposite to coaxial connection 4. In addition device has inner conductor 10 which is located inside one of two halves of outer tube conductor 8 and which one end is connected to inner conductor 7 of sleeve 6. In addition device has adapter which is designed as serial circuit of matching quarter-wave transformer 11, which is located inside outer tube conductor 8 in close proximity to space 9, and second end of inner conductor 10 and resistor 12, which is located in space 9 between two halves of outer tube conductor 8 and which second terminal is connected to opposite end of second half of outer tube conductor 8 in space 9, and U-shaped stub 13, which is connected in parallel to resistor 12 to its terminals. EFFECT: increased efficiency of antenna operations during and after heating conditions, loss and burning of heat-protection radio wave transparent antenna cover and heat- protection cover on aircraft side surface which encloses it. 3 dwg