Voltage-controlled unidirectional propagation of microwaves in metastructures ferrite/conductive elements with varactors

详细信息    查看全文

• 作者：Valery Butylkin ; Yuri Kazantsev ; Galina Kraftmakher ; Valeri Mal’tsev
• 刊名：Applied Physics A
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：123
• 期：1
• 全文大小：
• 刊物类别：Physics and Astronomy
• 刊物主题：Condensed Matter Physics; Optical and Electronic Materials; Nanotechnology; Characterization and Evaluation of Materials; Surfaces and Interfaces, Thin Films; Operating Procedures, Materials Treatment
• 出版者：Springer Berlin Heidelberg
• ISSN：1432-0630
• 卷排序：123

文摘

Voltage-controlled nonreciprocal frequency bands and inversion of nonreciprocity sign have been observed at microwaves with metastructures ferrite plate/array of magnetically excited varactor-loaded double split rings as well as twice split rings placed along rectangular waveguide axis. The effects are due to the nonreciprocal absorbing under interaction between ferromagnetic resonance in ferrite and magnetic resonance in rings (≪ wavelength) which are excited by microwave magnetic field h. It has been also investigated controlled nonreciprocal metastructures with ferrite and varactor-loaded single dipole in the form of butterfly as well as twice split ring as twin half-wave dipoles under excitation of dipole resonance by microwave electric field E. Mechanism of control is discussed.