Unidirectional Loop Metamaterials (ULM) as Magnetless Artificial Ferrimagnetic Materials: Principles and Applications
Toshiro Kodera, Christophe Caloz
TL;DR
This paper reviews Unidirectional Loop Metamaterials (ULM), a novel magnetless ferrimagnetic medium mimicking ferrite properties using unidirectional loops, with detailed physics and diverse applications.
Contribution
It introduces ULM as the first magnetless ferrimagnetic material, providing a comprehensive explanation of its physics and potential applications.
Findings
ULM mimics ferrite properties without magnets
ULM can be used in various electromagnetic applications
ULM physics is comprehensively explained
Abstract
This paper presents an overview of Unidirectional Loop Metamaterial (ULM) structures and applications. Mimicking electron spin precession in ferrites using loops with unidirectional loads (typically transistors), the ULM exhibits all the fundamental properties of ferrite materials, and represents the only existing magnetless ferrimagnetic medium. We present here an extended explanation of ULM physics and unified description of its component and system applications.
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