An efficient cost effective wide-angle metasurface-based linear and circular polarization converter for X-, Ku-and K-band applications

G Ozturk, UC Hasar, M Ertugrul, F Tutar… - Optics & Laser …, 2023 - Elsevier
A highly efficient metasurface-based polarization converter is proposed for X-band (8.2–12.4
GHz), Ku-band (12.4–18.0 GHz) and K-band (18.0–27.0 GHz) frequency ranges. It provides …

Broadband, stable, and noniterative dielectric constant measurement of low-loss dielectric slabs using a frequency-domain free-space method

UC Hasar, Y Kaya, G Ozturk… - IEEE Transactions on …, 2022 - ieeexplore.ieee.org
A broadband, stable, and noniterative free-space method is proposed for dielectric constant
determination of low-loss dielectric slabs from reflection-only measurements through simple …

Mechanical and electromagnetic properties of self-compacted geopolymer concretes with nano silica and steel fiber additives

UC Hasar, NA Eren, H Ozturk, M Izginli… - IEEE Transactions …, 2022 - ieeexplore.ieee.org
Mechanical and electromagnetic properties (over 2–16 GHz) of self-compacted geopolymer
concrete (SCGC) samples with different amounts of nanosilica (NS) and steel-fiber (SF) …

Internal decay inspection of tree trunks using 3D point cloud and reverse time migration of ground penetrating radar data

Z Chen, H Liu, X Meng, Y Yue, B Zhang, L Zou… - NDT & E International, 2023 - Elsevier
The tree trunk necrosis and collapses in urban environments have caused large amounts of
damage that threaten human safety. Several non-destructive testing methods have been …

Cheaper, wide-band, ultra-thin, and multi-purpose single-layer metasurface polarization converter design for C-, X-, and Ku-band applications

Y Kaya - Symmetry, 2023 - mdpi.com
This article presents the design of wide-band, ultra-thin, and multi-purpose polarization
converter utilizing metasurface for C-, X-, and Ku-band applications. Having a topology on a …

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 …

Complex permittivity characterization of low-loss dielectric slabs at sub-THz

B Xue, K Haneda, C Icheln, J Ala-Laurinaho… - IEEE …, 2024 - ieeexplore.ieee.org
This paper presents a novel low-complexity method to characterize the permittivities of low-
loss dielectric slabs at millimeter-wave and sub-terahertz bands. The method assumes …

Feasible extraction method for electromagnetic properties of multilayer metamaterials with short-circuit termination

UC Hasar, G Ozturk, Y Kaya, M Bute… - … on Antennas and …, 2022 - ieeexplore.ieee.org
An extraction technique is proposed for electromagnetic characterization of metal-backed
multilayer metamaterial (MM) structures demonstrating reflection-asymmetric property. It …

Simple and inexpensive microwave setup for industrial based applications: Quantification of flower honey adulteration as a case study

UC Hasar, H Hasar, H Ozturk, H Korkmaz, Y Kaya… - Scientific Reports, 2024 - nature.com
A simple and inexpensive microwave measurement setup based on measurements of
magnitudes of transmission properties (| S 21| dB) is proposed for industrial-based …

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 …