Fig. 16 is the picture of the fabricated low SLL array pro- totype. The measured radiation pattern at 60 GHz is shown in Fig. 17 that is compared to the simulated one. Both measure- ment and simulation are in good agreement. The gain of the main lobe is measured at 17.7 dBi with a 3 dB beamwidth of 15 degrees on the E-plane. There is a difference of 15.6 dB be- tween the main beam and side lobes observed