A 97-GHz-Band High-Gain 8 × 8 Waveguide Slot Array Antenna

A W-band high-gain 8 × 8 waveguide slot array antenna made by using computer numerical controlled machining process is presented in this paper. The antenna is composed of a centrosymmetric array of 64 radiation slots that are distributed in the broad walls of eight parallel rectangular waveguides. Each of the waveguide containing eight radiation slots is fed by a two-way waveguide power divider th...