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Title: Magnonic crystal as a delay line for low-noise auto-oscillators

It is demonstrated that a delay line based on a one-dimensional magnonic crystal used in a feedback loop of a microwave auto-oscillator can substantially reduce the phase noise figure and improve other vital performance characteristics of the auto-oscillator. The advantage is achieved due to the increase of the effective delay time in the magnonic crystal, compared to the case of an un-patterned yttrium iron garnet (YIG) film, and improvement of the power-handling characteristics due to the now possible increase of the YIG film thickness. The internal modes of a magnonic crystal caused by the periodic energy exchange between the incident and reflected spin waves play the dominant role in the described effect.
Authors:
;  [1] ; ; ;  [2] ;  [3]
  1. U.S. Army TARDEC, Warren, Michigan 48397 (United States)
  2. Department of Physics, Oakland University, Rochester, Michigan 48309 (United States)
  3. Department of Electrical Engineering, Yale University, New Haven, Connecticut 06511 (United States)
Publication Date:
OSTI Identifier:
22482132
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 107; Journal Issue: 12; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; CRYSTALS; ENERGY TRANSFER; FERRITE GARNETS; FILMS; IRON OXIDES; MICROWAVE RADIATION; NOISE; OSCILLATORS; PERFORMANCE; PERIODICITY; SPIN WAVES; THICKNESS; YTTRIUM COMPOUNDS