X-band waveguide phase shifter using rotating dielectric slab

The design and simulation of a phase shifter based on the rectangular waveguide (RWG) operating at 9.35 GHz are presented. The proposed phase shifter consists of a standard RWG section with an inserted dielectric slab. The phase shifting in this configuration is achieved by rotating the slab inside the waveguide. Numerical simulations have been carried out for different positions of the slab. A 14° beam deflection is observed for a slotted waveguide antenna array designed with this phase shifter.