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On the Design of Single and Dual Band Wilkinson Power Dividers for C-band Applications using Microstrip Technology

Abstract:

In this paper, the design and analysis of three single-band Wilkinson power dividers that work at 4 GHz, and a double-band Wilkinson that works on the C-band uplink and downlink, 6 GHz and 4 GHz respectively, are presented. The structure of the power dividers and the formulas used to determine the design parameters have been given. Two designs for the single-band Wilkinson divider are presented, the first design consists of an internal section with electrical length $\lambda /4$ and $Z-{0}\,= 70. 71 \Omega$, meanwhile the second design consists of three sections with impedance calculated using Chebyshev approximation. The dual-band Wilkinson power divider have a T-structure composed of two impedance in series and one stub. For verification, the proposed power dividers were fabricated using microstrip technology, and the experimental results show reflection levels below -30 dB and a good isolation between the output ports (ports 2 and 3) for every Wilkinson divider with values lower than -15 dB, confirming that the designs work as expected.