Millimeter-Wave High Gain Scanning Antenna Array using Printed RGW Technology

In this paper, a high gain magneto-electric (ME) dipole scanning antenna array for millimeter-wave applications is presented. The antenna array is fed by a printed ridge gap waveguide (PRGW) Butler matrix to have four beams elevated at 20
^o
from the broadside direction. A hybrid gain enhancement technique including AMC mushroom shapes around the antenna array with a perforated dielectric substrate lens located in the broadside direction is proposed. The proposed scanning array is achieved a high gain of 15± 1 dB over the operating bandwidth.