Generalised single-section broad-band asymmetrical Wilkinson power divider

This study presents microstrip non-uniform transmission lines (MNTLs) for asymmetrical single-section broad-band Wilkinson power divider design without reactive components. The proposed topology uses an asymmetrical MNTL section and three MNTLs for input/output transformers. The proposed structure demonstrates broad-band performance, low insertion loss and compact size in comparison with other proposed multi-section broad-band Wilkinson power dividers. An MNTL broad-band power divider working from 0.4 to 1.8 GHz is fabricated, and the measured results validate good broad-band performance with more than 127 bandwidth.