Patent ID: 7247590

Claim:
A composite dielectric containing: an aromatic liquid crystal polyester; and a dielectric ceramic powder provided in the aromatic liquid crystal polyester; wherein the composite dielectric exhibits a Q value of greater than 650 at a frequency of 1 GHz by perturbation method; wherein the dielectric ceramic powder includes at least one kind of metal oxide selected from a group consisting of Mg 2 SiO 4 , MgTiO 3 , ZnTiO 3 , Zn 2 TiO 4 , CaTiO 3 , SrZrO 3 , Ba 2 Ti 9 O 20 , Ba 2 (Ti,Sn) 9 O 20 , ZrTiO 4 , (Zn,Sn)TiO 4 , BaNd 2 Ti 5 O 14 , BaNd 2 Ti 4 O 12 , BaSm 2 TiO 14 , BaO—CaO—Nd 2 O 3 —TiO 2 system, BaO—SrO—Nd 2 O 3 —TiO 2 system, Bi 2 O 3 —BaO—Nd 2 O 3 —TiO 2 system, PbO—BaO—Nd 2 O 3 —TiO 2 system, (Bi 2 O 3 , PbO)—BaO—Nd 2 O 3 —TiO 2 system, La 2 Ti 2 O 7 , Nd 2 Ti 2 O 7 , (Li, Sm)TiO 3 , Ba(Mg 1/3 Nd 2/3 )O 3 , Ba(Zn 1/3 Ta 2/3 )O 3 , Ba(Zn 1/3 Nd 2/3 )O 3 and Sr(Zn 1/3 N 2/3 )O 3 .