Dielectric slab waveguide based millimeter-wave leaky-wave antennas

Several rectangular dielectric slab based leaky-wave antennas are proposed covering large bandwidths at V-band (60 GHz) and W-band (100 GHz) frequency. A simple periodic pattern of metal strips on the dielectric slab leads to frequency-dependent scan of the main beam direction. Four antennas, two at each frequency band, having different aperture lengths, are studied by simulation and measurement to investigate the variations in antenna performance. The measured frequency scanning resolution is 3.8 degrees per GHz at V-band and 2.3 degrees per GHz at W-band. The measured peak gain is 16.3 dBi and 15.8 dBi at V-band and W-band, respectively.