V-band Printed Ridge Gap Waveguide Phased Array Antenna with ±40° Scanning Angular Sector and ETSI Class II Radiation Pattern

Abstract

We present a multilayer printed ridge gap waveguide (PRGW) phased array antenna based on Rotman Lens (RL) beam forming network for V-band sensing applications. It employs PRGW Rotman Lens as a beam switching network to design multi-beam antenna. Both phase shift network (PSN) and BFN will be made in printed circuit board in multi-layer platform based on PRGW technology. A prototype phased-array system is designed with eleven beam ports and sixteen array ports. The simulated results validated PGW design, and ± 40¼ scanning angular sector capability. The beam ports radiation patterns for both E-and H-planes satisfy intended ETSI class II standard side lobe envelope with side lobe levels lower than -12dB and wide impedance bandwidth over operating band.