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

Journal Article · Mon Sep 21 00:00:00 EDT 2015 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4931758· OSTI ID:22482132

Bankowski, Elena; Meitzler, Thomas ^[1]; Tiberkevich, Vasil S.; Slavin, Andrei N. ^[2]; Tang, Hong X. ^[3]

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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)

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.

• OSTI ID: 22482132
• Journal Information: Applied Physics Letters, Vol. 107, Issue 12; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

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