Optimized Wideband Impedance Matching Balun for Conducting Two-Arm Antennas

Figure 20

The manufactured balun: (a) the inner conductor with a step transition in its diameter, (b) the doubly-slotted outer conductor mounted on a metal disc, (c) the bottom side of the metal disc with N-type coaxial connector.

(a)  

(b)

(c)