Authors:
Marzena Olszewska-Placha | QWED Sp. z o.o. | Poland
Jobin Varghese | Fraunhofer IKTS
Dorota Szwagierczak | Lukasiewicz Research Network-Institute of Microelectronics and Photonics | Poland
Janusz Rudnicki | QWED Sp. z o.o. | Poland
Beata Synkiewicz-Musialska | Lukasiewicz Research Network-Institute of Microelectronics and Photonics | Poland
Steffen Ziesche | Fraunhofer IKTS | Germany
Continuous and rapid development in emerging technologies such as 5G/6G communication systems, stimulates advances in material science, aiming at elaborating new dielectric materials manufactured with more efficient technological processes. The focus is put to lowering energy consumption and increasing environmental friendliness, while simultaneously fulfilling requirements for dielectric properties of substrates for modern communication and computer systems.
This work presents recent results of wideband characterisation of new glass-ceramic materials [1]. The material development activities target at developing ultra-low temperature co-fired ceramics (ULTCC) with sintering temperature below 650°C. New materials are fabricated in a form of cylindrically shaped bulk composites and multilayer ULTCC substrates. Bulk composites of ULTCC materials are characterised for their complex permittivity in a microwave frequency range with accurate resonant TE01δ cavity method [2]. Multilayer ULTCC substrates are subject to wideband microwave – mmWave – THz characterisation with Split-Post Dielectric Resonators (SPDRs) [3], Fabry-Perot open resonator (FPOR) [4], and Time-Domain Spectroscopy (TDS) methods, spanning the range from 2.5 GHz to 2.5 THz. Furthermore, temperature coefficient for resonant frequency (TCF) and relative permittivity are extracted by placing measurement fixtures in a climatic chamber and precise temperature and humidity control. Challenges in measurements of dielectric properties of ULTCC materials are discussed and uncertainty study is undertaken. Usability of new ULTCC materials for communication systems is validated with demonstrator design.
Acknowledgement
The work has been conducted within ULTCC6G_EPac project under M-ERA.NET2 programme, receiving funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement no. 685451. Part of this work was funded by the Polish National Centre for Research and Development under M-ERA.NET2/2020/1/2021 contract.
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