Open AccessCoupled microstrip line Wilkinson power divider with open‐stubs for compensation
Author(s) -
Wang X.,
Ohira M.,
Ma Z.
Publication year - 2016
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2016.1819
Subject(s) - microstrip , compensation (psychology) , power (physics) , electronic engineering , line (geometry) , equivalent circuit , printed circuit board , electrical engineering , computer science , engineering , physics , voltage , mathematics , geometry , quantum mechanics , psychoanalysis , psychology
Coupled microstrip line section is a well‐known technology for various circuits miniaturisation. Because the phase velocity difference of coupled microstrip line section exists in practical circuit, compensation method is needed to maintain circuit performance. In this Letter, extra open‐stubs are newly inserted between coupled microstrip line section and two output ports for compensation. Compared with previous work, by using open‐stubs, a novel and flexible compensation method is newly presented, where, both Γ ev and Γ od are adjusted for compensation at the same time, the proposed circuit not only provides simple structure and easy fabrication but also compensates arbitrary coupling strength without soldering parasitic effect in high frequency operation. Through even‐ and odd‐mode analysis, design equations are derived and discussed in Smith chart. In experiment, one circuit was fabricated, the measurement results showed good agreement with theoretical results.