Title:
【発明の名称】マイクロ波誘電体磁器組成物
Document Type and Number:
Japanese Patent JP3067815
Kind Code:
B2
Abstract:
Disclosed herein is a microwave dielectric ceramic composition which comprises a compound represented by the formula BaO . xTiO2 (where 3.7= x= 4.5) which is incorporated with 1.0-10 wt% Ba3Ti12Zn7O34 and 2-8 wt% Ta2O5. It has well-balanced performance owing to a Q value not less than 8000 (at 4.5 GHz), a relative permittivity epsilon r not less than 31, and a practical temperature coefficient in the range of -15 to +10 ppm/ DEG C. It may be further incorporated with 0.1-0.4 wt% MnO2 for improved sinterability in addition to the above-mentioned performance.
Inventors:
Fumio Mizuno
Application Number:
JP2529091A
Publication Date:
July 24, 2000
Filing Date:
January 26, 1991
Export Citation:
Assignee:
Nippon Special Ceramics Co., Ltd.
International Classes:
C04B35/46; C04B35/468; H01B3/12; H01G4/12; H01L23/15; H01L23/66; H01P7/10; (IPC1-7): C04B35/46; H01B3/12; H01G4/12
Domestic Patent References:
JP4243966A | ||||
JP3112859A | ||||
JP1305855A | ||||
JP63117957A | ||||
JP5914215A |
Attorney, Agent or Firm:
Kiyomichi Kojima