| 摘要 |
Disclosed herein is a phosphate-based dielectric ceramic composition which has a low dielectric constant and a low dielectric loss in the high-frequency bands such as microwave and millimeter wave. The composition is represented by the following formula: (1-x)(A'<SUB>1-y</SUB>A''<SUB>y</SUB>)O-xP<SUB>2</SUB>O<SUB>5 </SUB>wherein x and y are numbers satisfying the following conditions: 0 <x<1 and 0<=y<=1, and A' and A'' are each independently selected from the group consisting of Ca, Ba, Sr, Zn, Mb, Ni, Mn and Cu. The composition may further include a sintering assistant and an additive. Since the composition can be sintered at a temperature as low as 1,000° C., it can be simultaneously calcined together with a metal electrode such as silver, copper or silver/palladium electrode.
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