A 45-Degree-Linearly Polarized Millimeter-Wave Conformal Broadband Phased Array Antenna for Wide-Angle Scanning

A 45-degree-linearly polarized conformal array antenna at Ka-band is demonstrated in this paper. The proposed array antenna based on aperture coupled microstrip patch antenna has a relative bandwidth over 23% and an unrepresentative cylindrical appearance which could be easier to process. According to the simulation results, the active VSWR under ±45-degree beam scanning is less than 2.7 and the scanning loss of gain is smaller than 2.8dB.