Magnonic crystal as a delay line for low-noise auto-oscillators
- U.S. Army TARDEC, Warren, Michigan 48397 (United States)
- Department of Physics, Oakland University, Rochester, Michigan 48309 (United States)
- 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
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