DOUBLE-MIRROR AXISYMMETRIC ANTENNA Russian patent published in 1998 - IPC

FIELD: antenna engineering. SUBSTANCE: antenna is designed for operation in extremely high- frequency range and has reflector of about (15-20)/λ in diameter and counter-reflector of 2λ in diameter, its thickness being about 5/λ. Entire space of antenna wherein spherical wave of feed is transformed into flat wave in antenna aperture is filled with homogeneous radio insulation whose relative dielectric constant is approximately 2.5 to 3.5. Antenna is made in the form of monolithic unit incorporating two basic assembly parts: mirror system bearing insulating unit manufactured by using advanced technology and feed unit with polarization selector and waveguide channel. Versions of waveguide channel arrangement (inside or outside insulating unit) for detecting or emitting signals of different polarization are given in description of invention. EFFECT: reduced size and metal input, improved utilization factor of antenna surface, facilitated manufacture, and reduced cost of antenna. 10 dwg