Title: Microwave medium ceramics with high dielectric constant
Application Number: 03129371 Application Date: 2003.06.16
Publication Number: 1477079 Publication Date: 2004.02.25
Approval Pub. Date: Granted Pub. Date: 2005.03.16
International Classifi-cation: H01B3/12,C04B35/497,C04B35/491
Applicant(s) Name: Zhejiang Univ. Address: 310027
Inventor(s) Name: Chen Xiangming
Attorney & Agent: han gemei
Abstract:
     The present invention relates to a high dielectric constant microwave medium ceramics. It is formed from PbO, CaCO3, Fe2O3, Nb2O5 and ZrO2. It also provides its expression formula, and its dielectric constant is 90-150, at same time it has low loss (Qf is greater than 3000 GHz) and near zero temp. coefficient. The utilization of said microwave medium ceramics can make microwave elements and devices of dielectric resonator and filter, etc. be adapted to the requirement for further miniaturization, at the same time it can be used in high-frequency ceramic capacitor or temp. compensating ceramic capacitor, etc.
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