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US 7,160,829 B2Granted
Low-fire high-permittivity dielectric compositions
AssigneeKorea Institute of Science and Technology
InventorsJae-Hwan Park, Jae-Gwan Park, Dong-Soon Shin, Young-Jin Choi
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Abstract
A dielectric composition that can be fired at a temperature of below 900° C. The dielectric composition has a dielectric constant of 25–35 and a quality factor (Qxf) of 6,000–20,000 GHz. The composition comprises 3–16 wt % of K2O—Na2O—Li2O—B2O3—SiO2 system glass frit and 84–97 wt % of BaO—TiO2 system dielectric ceramics. The composition can be effectively applied to construct a part of a ceramic multi-layer packaging as a resonator form such as a filter or an antenna, etc.
Claims5
A dielectric composition comprising:
- 84–97 wt % of BaO—(Bi,Nd)2O3—TiO2;
- and
- 3–16 wt % of glass flit containing Li2O, B2O3 and SiO2, wherein the glass frit comprises:
- 7–40 wt % of SiO2, 33–60 wt % of B2O3, and 18–41 wt % of Li2O.
1 more element
Dependencies are inferred from the claim text.