The 2450BL15B050 from Johanson Technology is a balun that operates from 2400 to 2500 GHz. It has an unbalanced port impedance of 50 Ohms, an insertion loss of 1 dB and can handle up to 3 W of power. The balun has a return loss of 9.5 dB and an amplitude difference of 2 dB.