Feasibility study on a slot array in the millimeter-wave band based on a conformal waveguide

A novel antenna array with over 120 degree coverage in the azimuth plane based on a conformal waveguide is proposed. The 8×8 element array with directivity gain of 15.7dBi at 79GHz is designed and confirmed that the side lobe level by using switching method can be suppressed over 5dB compared to a linear array with 8 branch.