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Title: Magnonic crystals-based tunable microwave phase shifters

Tunable microwave phase shifters using magnetostatic backward volume waves in yttrium iron garnet/gadolinium gallium garnet thin film-based one-dimensional (1-D) and two-dimensional (2-D) magnonic crystals (MCs) are reported in this paper. Large differential phase shifts with small insertion loss variations were achieved in the passbands neighboring the bandgaps by tuning of the bias magnetic field. Large phase tuning rates up to 13.48 °/(Oe cm) and 25.9 °/(Oe cm) together with small insertion loss variations of 2.08 dB/cm and 0.97 dB/cm were demonstrated in the 1-D and 2-D MCs, respectively. An excellent agreement between the measured and the calculated results based on Walker's equation was obtained.
Authors:
;  [1] ;  [1] ;  [2]
  1. Department of Electrical Engineering and Computer Science, and Institute for Surface and Interface Science, University of California, Irvine, California 92697 (United States)
  2. (China)
Publication Date:
OSTI Identifier:
22311090
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 105; Journal Issue: 2; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; CRYSTALS; EQUATIONS; FERRITE GARNETS; GADOLINIUM COMPOUNDS; GALLIUM; GARNETS; LOSSES; MAGNETIC FIELDS; MICROWAVE RADIATION; ONE-DIMENSIONAL CALCULATIONS; PHASE SHIFT; THIN FILMS; TWO-DIMENSIONAL CALCULATIONS; YTTRIUM COMPOUNDS