Balanced to Unbalanced Power Divider With Arbitrary Power Ratio

In this letter, Balanced to Unbalanced (BTU) Gysel type Power divider (PD) with arbitrary power ratio is proposed. The proposed power divider shows out-of-phase characteristic at two unbalanced ports. Standard 4 × 4 scattering matrix of BTU PD with arbitrary power ratio is obtained from mixed mode scattering matrix. The analysis of the four port network is done by converting it into a two port network while other ports are matched terminated. Considering realizable impedance range of 20 - 120 Ω for microstrip lines, the maximum theoretical power division ratio is 1:4.76. Measurements are performed on a fabricated prototype (power dividing ratio 1:2) to verify the analytical results.