A novel electrically tunable microwave phase shifter is proposed based on surface spin wave propagation in a layered structure containing ferrite and ferroelectric materials. Operating characteristics of the phase shifter are investigated theoretically. It is shown that waveguiding elements from planar layered ferrite-ferroelectric structures allow the construction of compact devices with high electrical tunability achieving 10°/V.
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http://iet.metastore.ingenta.com/content/journals/10.1049/el_20010746
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