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Progress In Electromagnetics Research C
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NON-UNIFORM TRANSMISSION LINE ULTRA-WIDEBAND WILKINSON POWER DIVIDER

By K. A. Shamaileh, M. Almalkawi, V. K. Devabhaktuni, N. I. Dib, B. Henin, and A. M. Abbosh

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Abstract:
We propose a technique with clear guidelines to design a compact planar Wilkinson power divider (WPD) for ultra-wideband (UWB) applications. The design procedure is accomplished by replacing the uniform transmission lines in each arm of the conventional power divider with varyingimpedance profiles governed by a truncated Fourier series. Such non-uniform transmission lines (NTLs) are obtained through the even mode analysis, whereas three isolation resistors are optimized in the odd mode circuit to achieve proper isolation and output ports matching over the frequency range of interest. For verification purposes, an in-phase equal split WPD is designed, simulated, and measured. Simulation and measurement results show that the input and output ports matching as well as the isolation are below -10 dB, whereas the transmission parameters are in the range of (-3.2 dB, -4.2 dB) across the 3.1 GHz-10.6 GHz band.

Citation:
K. A. Shamaileh, M. Almalkawi, V. K. Devabhaktuni, N. I. Dib, B. Henin, and A. M. Abbosh, "Non-Uniform Transmission Line Ultra-Wideband Wilkinson Power Divider," Progress In Electromagnetics Research C, Vol. 44, 1-11, 2013.
doi:10.2528/PIERC13080807

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