GLASS-CERAMIC COMPOSITION WITH HIGH QUALITY FACTOR AND LOW DIELECTRIC CONSTANT FOR USE IN LTCC SUBSTRATES, AND RESONATORS FOR HIGH EFFICIENT FILTERS AND ANTENNAS

摘要

PURPOSE: A glass-ceramic composition with high quality factor and low dielectric constant is provided to adjust the dielectric constant and quality factor depending on their purpose by varying mixing ratio and sorts of fillers.;CONSTITUTION: A glass-ceramic composition is composed of zinc borosilicate glass and ceramic fillers. The ceramic fillers are selected from Al2O3, SiO2, mullite, and their mixture. The Q-factor is 4,200~40,000GHz and dielectric constant is 4.4~6.22(12GHz). The temperature factor of resonance frequency is -29~-14ppm/°C. The sintering temperature of the glass-ceramic composition is 900°C or lower. The Q-factor and dielectric constant can be adjusted by the ceramic fillers.;COPYRIGHT KIPO 2010