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

被引：32
作者：
Bankowski, Elena [1 ]
Meitzler, Thomas [1 ]
Khymyn, Roman S. [2 ]
Tiberkevich, Vasil S. [2 ]
Slavin, Andrei N. [2 ]
Tang, Hong X. [3 ]
机构：
[1] US Army TARDEC, Warren, MI 48397 USA
[2] Oakland Univ, Dept Phys, Rochester, MI 48309 USA
[3] Yale Univ, Dept Elect Engn, New Haven, CT 06511 USA
来源：
APPLIED PHYSICS LETTERS | 2015年 / 107卷 / 12期
基金：
美国国家科学基金会;
关键词：
Phase noise - Noise figure - Microwave oscillators;
D O I：
10.1063/1.4931758
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
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 unpatterned 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. (C) 2015 AIP Publishing LLC.
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页数：4
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