The TCN4-22+ from Mini Circuits is a Balun with Frequency 1.2 to 2.2 GHz, Amplitude Balance ± 0.04 to 0.38 dB, Phase Balance 1.87 to 15.55 Degree, Insertion Loss 0.55 to 1.55 dB, Power 5 W. Tags: Ceramic, Unbalanced to Balanced. More details for TCN4-22+ can be seen below.