Dual-Band Modified Wilkinson Power Divider Without Transmission Line Stubs and Reactive Components

In this paper, a novel modifled Wilkinson power divider without transmission line stubs (such as short-circuit stubs and open- circuit stubs) and reactive components (such as isolation inductor L and capacitor C) is developed for dual-band applications. This symmetric power divider consists of six sections of transmission lines and an isolation resistor, and the corresponding nonlinear design equations are derived by using the even- and odd-mode analysis. Moreover, by solving the flnal nonlinear design equations, accurate numerical design data along with difierent frequency ratios are obtained, and the efiective normalized parameters are given simultaneously in the flgure and table formats for speciflc applications. To theoretically verify the design parameters, an ideal equal power divider operating at both 900MHz and 5.85GHz is simulated. Finally, the proposed structure and design method are validated by simulated and experimental results of a typical microstrip planar power divider operating at both 1GHz and 3.5GHz.

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