Patent ID: 6245702
Filing Date: 2001-06-12
Classification: C04B,H01P

Abstract:
A high-frequency dielectric ceramic composition comprising a rare earth element (Ln), Mg, Ta, Ti and M, wherein M is at least one of Ca and Sr, having a composition represented by the composition formula aLnO.sub.x/2 -bMgO-cTaO.sub.5/2 -dMO-eTiO.sub.2 ;wherein a, b, c, d, e and x are mol % in the following ranges:0.100.ltoreq.a.ltoreq.0.350;0.067.ltoreq.b.ltoreq.0.233;0.033.ltoreq.c.ltoreq.0.117;0.150.ltoreq.d.ltoreq.0.400;0.150.ltoreq.e.ltoreq.0.400;a+b+c+d+e=1; andwherein 3.ltoreq.x.ltoreq.4.