FIELD: antenna technology.
SUBSTANCE: invention relates to antenna technology and serves as an irradiator of single-mirror parabolic antennas of satellite television and spacecraft. The expected result is achieved by the fact that the feed of a parabolic antenna containing the open end of a circular waveguide with a flange and a dielectric lens with an extension inside the waveguide, in the form of a body of rotation, the dielectric lens is installed with the possibility of its movement along the axis, differs in that the dielectric lens is made of a material with a refractive index ranging from 1.4 to 2, the length of the extension of the dielectric lens is approximately a multiple of the wavelength of the radiation used in free space, and the distance from the shadow boundary of the dielectric lens to the sensitive element to the electromagnetic radiation of the microwave receiver is selected no more than the radiation wavelength.
EFFECT: creation of a parabolic antenna feed with high sensitivity to receiving incident radiation.
1 cl, 1 dwg
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