Title :
High-performance low-cost phase-shifter design based on ferroelectric materials technology
Author :
Kim, W. ; Iskander, M.F. ; Tanaka, C.
Author_Institution :
Hawaii Center for Adv. Commun., Univ. of Hawaii, Honolulu, HI, USA
Abstract :
A novel approach to ferroelectric phase-shifter design using BaxSr1-xTiO3 (BSTO) films in a multilayer dielectric coplanar waveguide structure is described. By including a low-loss dielectric layer (SiO2) between the coplanar waveguide conductors and a layer of ferroelectric materials, significant reduction in insertion loss can be achieved in conjunction with a threefold increase in figure of merit (°/dB).
Keywords :
barium compounds; coplanar waveguides; dielectric losses; dielectric waveguides; ferroelectric devices; microwave phase shifters; multilayers; strontium compounds; BaxSr1-xTiO3 films; BaSrTiO3; SiO2; coplanar waveguide conductors; ferroelectric materials; ferroelectric materials technology; ferroelectric phase-shifter design; figure of merit; insertion loss; low-loss dielectric layer; multilayer dielectric coplanar waveguide structure;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20046119
