Design of a Ka-Band Slant Polarized Circular Waveguide Phased Array Antenna

This paper presents a Ka-band slant polarized circular waveguide phased array antenna. The radiator unit consists of a dielectric (e r =3.2) loaded circular waveguide, a PTFE cap and a stepped impedance transformer which connect the waveguide with a standard SMP connector. The simulation results show that the antenna array has the capability of beam scanning over ±45 ° within the working band from 32GHz to 40GHz.