DEVICE FOR FEEDING A REFLECTOR ANTENNA

摘要

The invention relates to a device for feeding a reflector antenna. The device (4) for feeding an antenna according to the invention comprises a reflector (2) onto which opens a waveguide (8) of circular or rectangular section, the end of which has a cylindrical (10) or conical (9) radiating aperture. A lens (22) made of dielectric material is partially inserted inside the aperture, with the part (23) of the lens (22) projecting outside the waveguide (8) substantially having a truncated cone shape and having its smaller diameter end (24) directed outwards. The end (24) includes a central cavity (25), the shape of which is given by the solution of a polynomial equation of the type "b + ax + cx? + dx3" or ofa logarithmic equation.