LOOP ANTENNA FOR TWO CIRCULAR POLARIZATION Russian patent published in 1998 - IPC

FIELD: radio engineering, radiolocation, radio communication, radio astronomy and other antenna systems. SUBSTANCE: invention is aimed at design of loop antenna for two circular polarizations on vertical supports having simple and reliable in calculation and manufacture circuit of feeding and phasing. Feeding in ring loop antenna for two circular polarizations is implemented in three points by voltages phase-shifted through 120 deg. Feeding modes for two circular polarizations and mutual isolation of inputs of polarizations are carried out with the use of sections of coaxial lines forming ring loop. EFFECT: simplified design and increased reliability of loop antenna. 1 dwg