Reduction of the Parasitical Signal of Circular Polarization on an Antenna of Variable Profile with the Help of a Grating

Reduction of the Parasitical Signal of Circular Polarization on an Antenna of Variable Profile With the Help of a Grating

“…In particular it is important in the case when solar magnetic fields are studied by radio methods. To overcome these difficulties in observations of circular polarization, the installa tion of a grating of curved wires was suggested (Esepkina et al, 1969). This grating is placed in front of the primary feed.…”

“…Observations of the circular polarization of the Sun by the proposed method were commenced with the Pulkovo large radio telescope in July 1968 (Esepkina et al, 1968). The scans of circularly polarized and unpolarized emission from the slowly varying component of the Sun are shown in Figure 3.…”