Microwave dielectric composition and method for preparing the sa

Details Microwave dielectric composition and method for preparing the sa Microwave dielectric composition and method for preparing the sa

1998-06-30

2000-02-22

Group, Karl

Compositions: ceramic

Ceramic compositions

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

501134, 264661, 264681, C04B 3548

Patent

active

060280212

ABSTRACT:
A microwave dielectric composition superior in all dielectric constant, product of resonant frequency by quality coefficient and temperature-dependent coefficient of resonant frequency, can be prepared by mixing a main oxide formulation consisting of lead oxide, calcium oxide, zirconium oxide and tin oxide with manganous nitrate (Mn(NO.sub.3).sub.2.4H.sub.2 O), calcining the mixture at a temperature of about 1,000 to 1,200.degree. C., pulverizing and molding the mixture, and sintering the molded body at a temperature of about 1,200 to 1,550.degree. C. in an oxygen atmosphere. It is 100 or greater in dielectric constant, 4,000 or greater in the product of resonant frequency by quality coefficient and .+-.3 mmp/.degree. C. or less in temperature-dependent coefficient of resonant frequency.

REFERENCES:
patent: 4550088 (1985-10-01), Park et al.
patent: 4992398 (1991-02-01), Huang et al.
patent: 5219809 (1993-06-01), Kato et al.
patent: 5756412 (1998-05-01), Lee et al.
Kato et al., "Dielectric Properties of Lead Alkaline-Earth Zirconate at Microwave Frequencies," Japanese Journal of Applied Physics, vol. 30, No. 9B (1991), pp. 2343-2346 No Month.
Kato et al., "Crystal Structure Refinement of (Pb.sub.1- .sub.x Ca.sub.x) ZrO.sub.3 by the Rietvelt Method," Japanese Journal of Applied Physics, vol. 32, No. 9B (1993), pp. 4356-4359 No Month.

Affiliated with

Also associated with

Rating

Microwave dielectric composition and method for preparing the sa does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Microwave dielectric composition and method for preparing the sa, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Microwave dielectric composition and method for preparing the sa will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-520352