Abstract
A simple and analytical design methodology for a novel multi-way Bagley Polygon power divider with arbitrary complex terminated impedances is proposed in this paper. The design parameters including electrical lengths and characteristic impedances can be obtained by the provided closed-form mathematical expressions when complex terminated impedances are known. Moreover, for convenient test, we design an impedance transformer to transform the complex impedance into real impedance using an extension line, and especially a re∞ection coe-cient chart to solve it. Four special cases of 3-way Bagley Polygon power divider operating at 2.4GHz are fabricated and measured with difierent condition complex terminated impedances for the purpose of veriflcation. Excellent agreement between simulation and measurement results proves the validity of the design method. The presented Bagley Polygon power divider exhibits 180 - phase difierence between any two adjacent output ports and 0 - phase difierence between two symmetrical output ports and is suitable for multi-antenna and difierential antenna system. Furthermore, simple layouts lead to convenient design procedure and easy fabrication.
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