Development of High-Performance Single- and Multiphase Dielectrics for Advanced Microwave Applications

A. BELOUS; O. V’YUNOV; L. KOVALENKO; V. KHITROVSKIY; K. GODZISZEWSKI; Ye. YASHCHYSHYN

doi:10.15407/scine21.04.021

Authors

A. BELOUS V.I. Vernadsky Institute of General and Inorganic Chemistry of the National Academy of Sciences of Ukraine https://orcid.org/0000-0001-7808-3828
O. V’YUNOV V.I. Vernadsky Institute of General and Inorganic Chemistry of the National Academy of Sciences of Ukraine https://orcid.org/0000-0001-7420-2287
L. KOVALENKO V.I. Vernadsky Institute of General and Inorganic Chemistry of the National Academy of Sciences of Ukraine https://orcid.org/0000-0003-1854-9694
V. KHITROVSKIY Scientific and Production Enterprise “Sinko” LLC https://orcid.org/0009-0007-9622-252X
K. GODZISZEWSKI Warsaw University of Technology https://orcid.org/0000-0002-8438-4667
Ye. YASHCHYSHYN Warsaw University of Technology https://orcid.org/0000-0001-8378-1399

DOI:

https://doi.org/10.15407/scine21.04.021

Keywords:

high-quality microwave dielectric, crystal structure, single-phase material, multiphase material, dielectric resonator, solid-state generator

Abstract

Introduction. The advancement of microwave technologies has necessitated the development of high-performance dielectric materials to enable miniaturization and enhance the functional characteristics of components such as radio frequency (RF) filters, dielectric resonators, and solid-state microwave sources.
Problem Statement. The design and fabrication of high-quality dielectric materials suitable for microwave
applications across the decimeter, centimeter, and millimeter wave bands remains a critical challenge due to their essential role in next-generation radio-frequency and wireless communication systems.
Purpose. This study aims to develop advanced microwave dielectric materials based on single- and multiphase
systems and to demonstrate their potential in improving the performance of wireless communication devices.
Materials and Methods. The crystallographic structure and dielectric properties of materials with various crystal lattices (e.g., perovskite, spinel) have been investigated through X-ray diffraction (XRD) and broadband dielectric spectroscopy. Prototype resonant elements fabricated from the synthesized microwave ceramics have been integrated and tested in wireless communication modules.

Results. High-quality, thermally stable dielectric materials with tailored permittivity values suitable for decimeter- to millimeter-wave applications have been developed. These materials have been successfully used to fabricate dielectric resonators for RF filters and solid-state microwave generators. The incorporation of these resonators has provided lower phase noise and enhanced device performance compared to conventional quartz-based systems. These findings have demonstrated that dielectric
resonators offer superior miniaturization and noise suppression, positioning them as critical components for low-noise, high-frequency devices in emerging 5G and 6G networks. Furthermore, the development of multiphase and high-entropy dielectrics, along with innovations in low- and ultra-low-temperature co-sintering techniques, has addressed the increasing demand for materials capable of supporting higher operational frequencies.
Conclusions. The high-Q dielectric materials and devices developed in this study meet international performance benchmarks and have the potential to significantly impact national technological priorities in telecommunications, defense, and security sectors.

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Author Biography

O. V’YUNOV, V.I. Vernadsky Institute of General and Inorganic Chemistry of the National Academy of Sciences of Ukraine

I was born on 12 May 1968 in Kyiv, Ukraine. After secondary school, in 1985-1993 attended Kyiv Polytechnic Institute (now the National Technical University of Ukraine Igor Sikorsky Kyiv Polytechnic Institute), Faculty of Electronic Engineering. During this time, also spends 2 years in the Soviet Armed Forces (sergeant). In 1994-1997 was a Ph.D. student of V.I. Vernadskii Institute of General and Inorganic Chemistry (Kyiv). In 1998, defended a Ph.D. entitled “Synthesis, Structure, and Properties of Aliovalent-Substituted Titanium Oxides with Perovskite Structure”. Between 1998-2000 was working at V.I. Vernadsky Institute as a scientist. From 2000 till the present time continues work as a senior scientist. Performed several stays in France, where acquired new knowledge in various instrumental methods of solid-state chemistry. I am the co-author of more than one hundred peer-reviewed papers in international scientific journals.

Scientific interests are mostly focused on the chemical methods for the synthesis of powders of complex oxide systems and solid solutions, ceramics, and films based on them. Research methods that provide a tool to predict and understand the interrelation between structural, electrical, and physical properties of various functional oxide materials.

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