Process of preparing low-temperature sintered microwave...

Details Process of preparing low-temperature sintered microwave... Process of preparing low-temperature sintered microwave...

2006-11-07

2006-11-07

Brunsman, David M. (Department: 1755)

Compositions: ceramic

Ceramic compositions

Titanate, zirconate, stannate, niobate, or tantalate or...

Reexamination Certificate

active

07132381

ABSTRACT:
There is provided a process of preparing low-temperature sintered microwave dielectric ceramics, prepared by a process comprising co-precipitating Nb and Bi or Zn in an aqueous basic solution to obtain a BiNbO4or Zn3Nb2O8precursor powder, thermally decomposing the powder to obtain BiNbO4or Zn3Nb2O8powder, adding CuO and V2O5, pulverizing and sintering the mixture, which produces ceramics having small dielectric losses (Q·f0>15,000 GHz) and high dielectric constant (k=20–45) at microwave frequencies by sintering at a low temperature of 700 to 750° C. Thus, the microwave dielectric ceramics prepared in accordance with the present invention can be advantageously used in multi-layer ceramic packaging such as filter planar antenna, microwave oscillator, etc., which comprise base metals such as silver (Ag) and copper (Cu) as an internal electrode.

REFERENCES:
patent: 4543341 (1985-09-01), Barringer et al.
patent: 5350639 (1994-09-01), Inoue et al.
patent: 6395663 (2002-05-01), Chen et al.
patent: 6730623 (2004-05-01), Dai
patent: 05074225 (1993-03-01), None
patent: 07172916 (1995-07-01), None
Lee et al, “Bi-ZN-NB-O microwave dielectric materials for mutlilayer filter application”, Materials Chemistry and Physics, 79 (2003) pp. 124-128. no month available□□.

Affiliated with

Also associated with

Rating

Process of preparing low-temperature sintered microwave... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process of preparing low-temperature sintered microwave..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process of preparing low-temperature sintered microwave... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3703353