Compositions: ceramic – Ceramic compositions – Titanate – zirconate – stannate – niobate – or tantalate or...
Patent
1993-06-09
1994-05-17
Bell, Mark L.
Compositions: ceramic
Ceramic compositions
Titanate, zirconate, stannate, niobate, or tantalate or...
501153, C04B 3546
Patent
active
053127900
ABSTRACT:
A novel ceramic ferroelectric material having a low dielectric constant, loss and high tunability. The material is a composite comprising Barium Strontium Titanate (BSTO) and a ceramic material having a low dielectric constant. The preferred composite is represented by Ba.sub.1-x Sr.sub.x TiO.sub.3 -Al.sub.2 O.sub.3, wherein x is greater than 0.00, but less than or equal to 0.70, and wherein the percent weight ratio between Ba.sub.1-x Sr.sub.x TiO.sub.3 and Al.sub.2 O.sub.3 ranges from approximately 99%-40% and 1%-60%, respectively. The novel materials possess superior electronic properties; and they may be employed in various antenna systems.
REFERENCES:
patent: 4987107 (1991-01-01), Narumi et al.
Gilde Gary
Lancto Robert
Ngo Eric
Sengupta Louise C.
Stowell Steven
Bell Mark L.
Elbaum Saul
Jones Deborah
Krosnick Freda L.
The United States of America as represented by the Secretary of
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