Design of Ultra-Wideband T-junction Power divider Based on Rectangular Micro Coaxial Structure

In this paper, two ultra-wideband T-junction power divider based on rectangular micro coaxial structure are proposed. One is a 3-dB power divider and the other is a 2:1 unequal power divider. The rectangular micro-coaxial structure has the advantages of small size, ultra-wideband and small transmission loss, so the power divider based on this structure has good performance. The center conductor is slotted to realize device miniaturization. The simulation results show that the transmission loss is less than 0.3 dB from 60 GHz to 110 GHz in both dividers. And the return loss of 3-dB power divider and 2:1 unequal power divider are better than 19.5dB and 14dB respectively.