Tunable metamaterial bandstop filter based on ferromagnetic resonance
Source abstract
Abstract
Tunable wideband microwave bandstop filters have been investigated by experiments and simulations. The negative permeability is realized around the ferromagnetic resonance frequency which can be influenced by the demagnetization factor of the ferrite rods. For the filter composed of two ferrite rods with different size, it exhibits a -3 db stop bandwidth as large as 500 MHz, peak absorption of -40 db and an out-of-stopband insertion loss of -1.5 db. This work provides a new way to fabricate the microwave bandstop filters.
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Research context
OpenAlex topics: Metamaterials and Metasurfaces Applications · Advanced Antenna and Metasurface Technologies · Antenna Design and Analysis
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Affiliations
Beijing University of Posts and Telecommunications State Key Laboratory of Information Photonics and Optical Communications & School of Science, , Beijing 100876, China
Funding
National Natural Science Foundation of China · China Postdoctoral Science Foundation
References (25)
Show source-provided references
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