ANTENNA Russian patent published in 1997 - IPC

FIELD: antenna equipment. SUBSTANCE: antenna has metal screen 1 and disc 2 mounted in parallel to each other and separated by dielectric 3, coaxial transmission line 4 which internal conductor 5 is connected to center of disc 2 and which external conductor 6 is connected to metal screen, tuning elements in the form of current-conductive pins 8 joining disc 2 and metal screen 1, dome 9 of radioparent material mounted on metal screen 1 and screening disc 2 and tuning elements, attachment 10 providing for electric contact of metal screen 1 with mounting surface of object 11. Current conductive pins 8 are positioned uniformly over perimeter of disc 2. Distance between any two adjacent current-conductive pins 8 should be not less than λ/4, where λ is length of wave in free space. Height of current conductive pins is h = (0,014÷0,02)λ and diameter d = (4,2•10^-3÷5,2•10^-3)λ. EFFECT: simplified circuit of antenna matching as a result of optimization of dimensions of current-conductive pins and of their optimal positioning in aperture of antenna with simultaneous preservation of symmetry of antenna radiation pattern and achievement of maximum gain factor. 5 dwg