An experimental study of electronic scanning by an antenna loaded with a circular array of ferrite rods

摘要: The measured performances of the antenna which consists a circular array 12 anisotropic ferrite rods, truncated biconical horn, and core wire coaxial cable at center horn are presented. following made clear. transmitting pattern having single big lobe suppressed sidelobes is obtained by effects appropriate anisotropy interactions among rods. main cannot be rotated continuously, but intervals about 30\deg gradually changing axial magnetic fields applied to respective ferrites; that agrees with what was expected two-dimensional theory. Reciprocity does not hold for this antenna: receiving coincides 180\deg . Hence, permits us receive from direction simultaneously transmit in different direction. frequency characteristics including input impedance also shown discussed.