S-SHAPED ANTENNA Russian patent published in 2001 - IPC

FIELD: radio and television broadcasting and communications in ultrashort waveband. SUBSTANCE: antenna has wire turn arranged along sides of two squares placed in tandem along common diagonal and two-wire power line connected to two closest alternate open sides of different squares. Additional second, third, and next turns are placed in tandem in parallel with and coaxially to two first ones along axis parallel to common diagonal and crossing center of the latter. Two-wire line may be connected in series to first and next turns. First, second, and next turns may be spaced apart through distance equal to quarter-wavelength of electromagnetic wave ; third turns are shortened compared with third ones in which case the latter are connected to two-wire power line. In addition linear dimensions of first, second, and all next turns as well as distances along two-wire power line at points where it is connected to them vary obeying logarithmic law, first, second, and next turns being cross-connected to this line. EFFECT: enhanced directive gain of antenna. 5 cl, 3 dwg