Affiliation of Author(s):[1] State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu, 610054, China; [2] Information Materials and Device Applications Key Laboratory of Sichuan Provincial Universities, Chengdu University of Information Technology, Chengdu, 610225, China
Journal:Journal of the European Ceramic Society
Key Words:Dielectric properties - Electric lines - Lithium compounds - Magnesium compounds - Microwave devices - Microwaves - Millimeter waves - Molybdenum compounds - Niobium compounds - Sintering - Sodium compounds - Solid state reactions - Temperature - Terahertz waves
Abstract:A novel Li2Mg2-xNa2xMo3O12 (x = 0.09) ceramic with ultra-low sintering temperature is prepared by the solid-state reaction method. This ceramic (625 °C) exhibits excellent microwave dielectric properties (Εr = 7.9, Q×f = 43844 GHz, τf = ?48.3 ppm/°C), terahertz transmission properties (Εr1 = 7.4, tan σ1 = 0.0158, Tcoefficient = 0.598), and chemical compatibility with Ag. For the first time, two polarization selective devices are designed in the microwave and terahertz regions by using this ceramic substrate, respectively. The transmission amplitudes of the right- and left-handed circularly polarized waves of the microwave device at 9.7 GHz are 0.895 and 0.019, respectively. The transmission coefficients of the y- and x-polarized waves of the terahertz device at 0.45 THz are 0.598 and 0.075, respectively. Both functions are verified by the overall far-field radiation pattern. This work promotes the application of dielectric ceramics and ULTCC technology in the microwave and terahertz regions. ? 2022 Elsevier Ltd
Document Type:Journal article (JA)
Volume:43
Issue:2
Page Number:384-391
ISSN No.:09552219
Translation or Not:no