Microstrip power divider with capacitive stubs loading for miniaturisation and harmonic suppression

A novel compact microstrip power divider with capacitive stubs loading is presented. The whole size of the new divider has been reduced to 47% of the conventional Wilkinson power divider. According to simulation results, the operation frequency bandwidth of proposed divider is 20% of the centre frequency of 1.0GHz without performance degradation. Furthermore, the new structure has high harmonic suppression performance over the band of second and third harmonic signals.