Microwave radiating element and antenna array including linear phase shift progression angular tilt

摘要

A slotted waveguide radiator for an antenna array is arranged to receive microwave energy inputs at either end for producing separate radiated beams and has loading slots having predetermined center-to-center spacings in the longitudinal dimension to provide a predetermined squint angle for each radiated beam which is related to the direction in which energy is fed to the waveguide. The radiator includes means for providing a linear phase shift progression in the signal components radiated from the slots from one end of the waveguide to the other to thereby provide an angular tilt to each radiated beam which is independent of the direction in which energy is fed to the waveguide.