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A C‐band wideband 360° analog phase shifter design
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.24938
Subject(s) - varicap , wideband , phase shift module , microstrip , microwave , hybrid coupler , monolithic microwave integrated circuit , electronic circuit , bandwidth (computing) , electrical engineering , electronic engineering , center frequency , engineering , diode , insertion loss , power dividers and directional couplers , telecommunications , physics , capacitance , amplifier , band pass filter , electrode , quantum mechanics
This article proposes a reflection‐type wideband 360° analogue phase shifter in microstrip form. It employs a 3‐dB branch‐line coupler circuit to achieve a wideband operation and two varactor‐diode circuits to achieve 360° phase shift. Formulas are derived to optimize the dimensions of the microstrip lines in the coupler and the varactor‐diode circuits for wideband operation and minimizing frequency dependency of the output phase. Experimental results show that the design has a 360° phase‐shift range and 1 dB insertion loss, with a 500‐MHz operation bandwidth at the center frequency of 6.5 GHz. ©2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52: 355–359, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24938