The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 24, 2007
Filed:
Jul. 19, 2004
Dong Young Kim, Daejeon, KR;
Hong Yeol Lee, Chungcheongbuk-do, KR;
Dong Suk Jun, Daejeon, KR;
Sang Seok Lee, Daejeon, KR;
Dong Young Kim, Daejeon, KR;
Hong Yeol Lee, Chungcheongbuk-do, KR;
Dong Suk Jun, Daejeon, KR;
Sang Seok Lee, Daejeon, KR;
Abstract
Provided are a dielectric ceramic composition of forsterite system for microwave and millimeter-wave application and a method for forming the same. Here, the dielectric ceramic composition having a small dielectric loss is used for communication devices used at microwave and millimeter-wave bands. The dielectric ceramic composition includes forsterite (MgSiO) as a main element and titanium oxide (TiO), which is partially substituted for silicon (Si) in forsterite. The dielectric ceramic composition is obtained by using 56 to 57 wt % of MgO, 33 to 42 wt % of SiO, and 1 to 11 wt % of TiO, and adding an additive including Li ions as a sintering aid for improving a sintering characteristic. The dielectric ceramic composition is formed by mixing MgO, SiO, and TiO, calcining the mixture to form forsterite powder, adding an additive including Li ion, for example, LiCO, and shaping and sintering the mixture.