Wideband Slot Array Antenna Fed by Gap Waveguide with Right-Handed Circular Polarization and High Gain

Figure 10

The structure of the E-probe transition between feed-1 and feed-2 layers ( = 7 mm,  = 3.45 mm,  = 0.6 mm,  = 2.38 mm,  = 3.28 mm,  = 1.34 mm,  = 3 mm, and  = 1 mm).