Magnetically tunable wideband microwave filter using ferrite-based metamaterials

Abstract

A novel metamaterial filter with stable passband performance based on frequency selective surface AIP Advances 4, 077114 (2014); 10.1063/1.4890108Self-biased planar millimeter wave notch filters based on magnetostatic wave excitation in barium hexagonal ferrite thin films Appl. Phys. Lett. 97, 173502 (2010); 10.1063/1.3504256Determination of magnetic properties of ultrathin iron films using microwave stripline technique

Programmable Metasurfaces: State of the Art and Prospects

“…Applications include adaptive microplate arrays, i.e., magnetically responsive nanostructures for tuned optics [26], hybrid devices [27] and generation of resonant-assisted tunneling phenomena [28]. Magnetically responsive structures have been exploited also in tunable-resonance metamaterials: ferritewire metamaterials for tunable negative index [29], ferrite-rod structures with different saturation magnetization for wideband tunable microwave filters [30], and tunable broadband absorbers consisting of ferrite slabs and copper wires [10], as shown in Fig. 1(b).…”

Design of a tunable multiband terahertz waves absorber

“…Most used the magnetically tuning the inductance via the active ambient effective permeability [27][28][29][30]. In these previous works, most of the resonant elements can be represented by an effective inductor-capacitor (LC) resonator, and the resonance frequency is dependent on the effective capacitance C and inductance L. So the method of tunability is introducing another component made from an electro-optic material [31][32][33], liquid crystal [34][35][36], ferrite [37,38], semiconductor [19,20,23] and superconductors [39], liquid metals [40], chemical control [41]to alter L, C or both of them.…”

High-performance bifunctional polarization switch chiral metamaterials by inverse design method

“…The emergence of metamaterials breaks the natural materials' constraint and brings an unprecedented opportunity to fully control the electromagnetic waves (EMWs) from microwave to optical frequencies, including polarization, phase, and amplitude. [2][3][4][5] Polarization, a basic characteristic of EMW, conveys valuable information and serves as a cornerstone in many optical phenomena. Manipulating the polarization of EMWs is vital to numerous applications from signal communication, spectroscopy to microscopy.…”