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Design for a linear voltage‐controlled 360°‐analog phase shifter
Author(s) -
Xiao M. X.,
Cheung S. W.,
Yuk T. I.
Publication year - 2010
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.25314
Subject(s) - varicap , phase shift module , microwave , linearity , electrical engineering , transmission line , engineering , diode , voltage , electronic engineering , phase (matter) , insertion loss , optoelectronics , materials science , telecommunications , physics , electrode , quantum mechanics , capacitance
The article presents the design of a linear voltage‐controlled 360° analog phase shifter operating at 2.2 GHz. It is a reflection‐type with a simple and compact structure, using a λ/4‐coupled‐line coupler with the output ports terminated with identical parallel‐tuned varactor‐diode circuits for a full 360°‐phase shift. Formulas are derived for making use of the dimensions of the transmission lines to linearize the phase shift against the control voltage. Simulation and measurement results on the linearity and insertion loss are presented. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52: 1821–1825, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.25314