The Design of Cylindrical Metal-Plate Microwave Lenses fed by Non-Resonant Slotted Waveguide Arrays

The use of a suitably modified refractive index enables cylindrical lenses with squinting linear feeds to be designed by the usual 2-dimensional methods applicable to lenses with non-squinting feeds. An example is given of the design of a typical lens fed by a nonresonant slotted waveguide having a 20° squint angle.