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Miniaturized multi‐frequency Wilkinson power dividers based on nonuniform coplanar waveguide
Author(s) -
Jaradat Heba,
Dib Nihad,
Al Shamaileh Khair
Publication year - 2019
Publication title -
international journal of rf and microwave computer‐aided engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.335
H-Index - 39
eISSN - 1099-047X
pISSN - 1096-4290
DOI - 10.1002/mmce.21656
Subject(s) - return loss , transmission line , wilkinson power divider , coplanar waveguide , power (physics) , series (stratigraphy) , electronic engineering , fourier series , transmission (telecommunications) , equivalent circuit , electric power transmission , materials science , power dividers and directional couplers , computer science , acoustics , physics , optics , mathematics , electrical engineering , engineering , telecommunications , frequency divider , microwave , voltage , mathematical analysis , quantum mechanics , paleontology , antenna (radio) , biology
In this work, the design of miniaturized dual‐ and triple‐ frequency Wilkinson power dividers using nonuniform coplanar waveguides is presented. The miniaturized configurations are achieved by replacing the conventional uniform arms with their equivalent multi‐frequency nonuniform transmission lines. The nonuniform width variation is governed by a truncated Fourier series expansion with coefficients optimized to obtain the desired multi‐frequency operation. The optimization process is carried out through the analysis of the even/odd mode circuits. The proposed dividers are simulated, fabricated, and measured to validate the design methodology. Simulated and measured results agree very well, and show input/output ports return loss and isolation better than 14.4 dB and transmission parameters in the range of −3 ± 2 dB at the design frequencies. Size reduction of 16.7% and 17.6% are achieved for the fabricated dual‐ and triple‐frequency dividers, respectively.