Emerging magnetodielectric materials for 5G communications: 18H hexaferrites

Q Li, Y Chen, C Yu, L Young, J Spector, VG Harris - Acta Materialia, 2022 - Elsevier
With the rapid development of 5G technologies, it is crucial to seek magnetodielectric
materials with high permeability and permittivity, low magnetic and dielectric losses, and …

Hexaferrite composites with sintering-induced texture for Snoek's product enhancement and magnetic loss suppression

C Wu, Y Li, Q Li, Z Ma, T Deng, Z Li, X Jiang, K Sun… - Acta Materialia, 2023 - Elsevier
Hexaferrites with high permeability and low magnetic loss have been attracting great
attention from both academic and industrial communities as promising high-frequency …

Application of the Kalman Filter/Smoother for accurate material characterization of planar dielectric samples by using free-space measurements at sub-THz …

UC Hasar, Y Ozbek, H Ozturk, H Korkmaz, M Hudlička - Measurement, 2023 - Elsevier
Abstract The Kalman Filter/Smoother, as a new post-calibration technique, has been
successfully applied for accurate relative complex permittivity ɛ r extraction of planar …

A folded substrate integrated waveguide re-entrant cavity for full characterization of magneto-dielectric powder materials

Y Xiang, J Huang, L Fu, Y Chen, W Gu… - IEEE Sensors …, 2021 - ieeexplore.ieee.org
In this study, a folded substrate integrated waveguide (FSIW) re-entrant cavity sensor
(RECS) is proposed for full characterization of magnetic-dielectric powder materials. In the …

Noniterative Reference-Plane-Invariant Material Parameter Retrieval Method for Low-Loss Solid Samples Using One-Port Waveguide Measurements

UC Hasar, H Ozturk, OM Ramahi - IEEE Transactions on …, 2023 - ieeexplore.ieee.org
A new microwave retrieval method is devised to extract complex relative permittivity and
complex relative permeability. It uses reflection-only scattering parameter measurements of …

Thickness-Independent Reference-Plane-Invariant Noniterative Permittivity Extraction of Low-Loss Solid Dielectric Samples by Combined Use of Frequency-and Time …

UC Hasar, H Ozturk - IEEE Transactions on Microwave Theory …, 2024 - ieeexplore.ieee.org
A novel noniterative microwave method is proposed for relative permittivity extraction of solid
samples using thickness-independent reference-plane-invariant (RPI) expressions. The …

Electromagnetic shielding effectiveness of amorphous metallic spheroidal-and flake-based magnetodielectric composites

K Qian, Q Li, A Sokolov, C Yu, P Kulik… - Journal of Materials …, 2021 - Elsevier
Flexible, lightweight, conductive materials, having both high rf losses and high permeability,
are extremely desirable for applications as electromagnetic (EM) shielding. Gas atomized …

An improved overmoded-waveguide method for the accurate measurement of dielectric properties in the sub-terahertz band

X Gong, W Wang, G Liu, Y Cao, Y Wang… - Journal of Infrared …, 2023 - Springer
Overmoded-waveguide method (OWM) can effectively alleviate the errors caused by air
gaps in waveguide measurements of dielectric properties. In our previous study, both sides …

Non-Iterative and Stable Permittivity Extraction of Solid Dielectrics Using a New Formalism Based on Frequency-Domain and Time-Domain Analyses

UC Hasar, H Ozturk - IEEE Transactions on Antennas and …, 2024 - ieeexplore.ieee.org
A noniterative and stable microwave non-resonant method is devised for accurate
permittivity extraction of solid samples without the need for information of reference plane …

Artificial neural network model for evaluating parameters of reflection-asymmetric samples from reference-plane-invariant measurements

UC Hasar, H Ozturk, M Ertugrul… - IEEE Transactions …, 2023 - ieeexplore.ieee.org
A technique based on artificial neural network (ANN) is proposed to extract the
electromagnetic properties of reflection-asymmetric samples from reference-plane-invariant …