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A novel quasi symmetrical design of the three‐way Gysel power divider using ideal phase inverters
Author(s) -
Zhang XuChun,
Yang Xiao,
Liao ZhenHeng,
Xie JunWei,
Zhao JieZu
Publication year - 2020
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.22370
Subject(s) - power dividers and directional couplers , microstrip , electrical impedance , wideband , wilkinson power divider , port (circuit theory) , impedance matching , ideal (ethics) , electronic engineering , center frequency , computer science , topology (electrical circuits) , electrical engineering , engineering , frequency divider , band pass filter , philosophy , epistemology
Abstract A novel quasi symmetrical three‐way Gysel power divider with frequency‐independent isolation and impedance matching is proposed. Equal magnitudes of the reflection coefficients for the input and the output ports of the three‐way divider can be obtained despite the asymmetrical structure and the different terminal impedances. The divider is analyzed in terms of its equivalent four‐port network. Quasi symmetrical property (| S 11 | = | S ii |, i = 2‐4) is proved which means the input port (port. 1) will automatch when the output ports are matched. Closed‐form equations are derived for the design. For verification, based on the microstrip/slotline PI, two examples, which include a three‐way Gysel PD with port impedances (50, 50, 50, 50) Ω, and an ultra‐wideband three way Gysel PD with port impedances (50, 100, 100, 100) Ω with the center frequency of 4 GHZ are designed, fabricated, and measured respectively. The measured results are in great agreement with the simulated ones.