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Modified principle of distributed ferroelectric phase shifter considering the influence of interconnecting lines
Author(s) -
Yu An,
Yang Chuanren,
Chen Hongwei,
Zhang Jihua
Publication year - 2008
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.23212
Subject(s) - phase shift module , capacitor , microwave , ferroelectricity , capacitance , insertion loss , inductance , electrical engineering , equivalent circuit , phase (matter) , engineering , electronic engineering , materials science , optoelectronics , physics , telecommunications , dielectric , voltage , electrode , quantum mechanics
The deviation between theoretic values and real data of distributed ferroelectric phase shifter is investigated by simulating an ideal model and analyzing an equivalent circuit. The deviation is shown to come from the parasitic inductance of interconnecting lines between loaded capacitors and center strip of CPW, which reduces the Bragg frequency, increases the insertion loss and phase shift. By introducing an effective capacitance to consider the effect of interconnecting lines, a modified principle is presented, which forecasts performances better. © 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 748–751, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23212