1. Generalized Symmetrical 3 dB Power Dividers With Complex Termination Impedances
- Author
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Anna Piacibello, Marco Pirola, and Giovanni Ghione
- Subjects
Power dividers ,Wilkinson ,hybrid ,Electrical engineering. Electronics. Nuclear engineering ,TK1-9971 - Abstract
The paper introduces a class of two-way, 3 dB narrowband power dividers (combiners), closed on complex termination impedances, that generalizes a number of topologies presented during past years as extensions of the traditional Wilkinson design. Adopting even-odd mode analysis, we demonstrate that, under very broad assumptions, any axially symmetric reactive 3-port can be designed to operate as a 3 dB two-way power divider, by connecting a properly designed isolation impedance across two symmetrically but arbitrarily located additional ports. We show that this isolation element can be evaluated by a single input impedance or admittance CAD simulation or measurement; moreover, an explicit expression is given for the isolation impedance. The theory is shown to lead to the same design as for already presented generalizations of the Wilkinson divider; further validation is provided through both simulated and experimental case studies, and an application of the theory to the design of broadband or multi-band couplers is suggested.
- Published
- 2020
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