SHUNT ANTENNA Russian patent published in 1998 - IPC

FIELD: antenna equipment for radio communication in radio frequency ranges. SUBSTANCE: device has radiating emitter which is designed as row of vertical parallel conductors which are spaced by gap which is much less then working wavelength, row of horizontal conductors which have same length and are connected to corresponding vertical conductors by first ends and to joining horizontal conductors by their second ends. In addition device has oscillator which is inserted in one of vertical conductors. Vertical conductors are located at sides of equilateral triangle prism. Horizontal conductors are spread from symmetry center of antenna at angle of 2π/3 with respect to one another. Joining horizontal conductors have same length and shape; they provide identical figures which are located at top and bottom of prism and are in symmetry about symmetry center of antenna. Said figures are either circle, or equilateral triangle, epicycloid, hypocycloid. In addition device may have tuning horizontal wires, which are connected to connection points of horizontal and joining horizontal conductors, passive emitter which has same shape as radiating emitter and is spaced from it by 0.17 - 0.30 L0, where L0 is working wavelength, or passive emitter, which horizontal conductors are joined in symmetry center at top and bottom in points which are connected by means of one conductor. Its diameter conforms to condition , where r and R are radiuses of vertical conductors and of circle which is circumscribed about prism base. EFFECT: increased gain and bandwidth, decreased size of horizontal conductors, while length of vertical emitting conductors is kept constant. 4 cl, 3 dwg