Tunable devices incorporating cacu3ti4o12

Details Tunable devices incorporating cacu3ti4o12 Tunable devices incorporating cacu3ti4o12

2005-08-30

2005-08-30

Kopec, Matt (Department: 1751)

Compositions: ceramic

Ceramic compositions

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

C315S005460, C315S005530, C333S205000, C333S207000, C333S209000

Reexamination Certificate

active

06936559

ABSTRACT:
This invention provides tunable devices incorporating the dielectric CaCu3Ti4O12. CaCu3Ti4O12is especially useful in tunable devices such as phase shifters, matching networks, oscillators, filters, resonators, and antennas comprising interdigital and trilayer capacitors, coplanar waveguides and microstrips.

REFERENCES:
patent: 5472935 (1995-12-01), Yandrofski et al.
Subramian et al “High Dielectric Constant in ACu3Ti4O12 and ACu3Ti3FeO12 Phases”, Journal of Solid State Chem, 151, 323-325 May 2, 2000.
Crystallographic and magnetic structures of materials with threefold orbital degeneracy. Application to calcium tricuprotetratitanateJournal of Physics C: Solid State Physics (1980), 13(27), 5125-36. Abstract Only.
Stability of the crystal structures and the preparation conditions of the perovskites AC3B4O12 Author(s): Troyanchuk, I.O. ; Izvestiya Akademii Nauk SSSR, Neorganicheskie Materialy (1988), 24(5), 840-2. Abstract Only.
Magnetic properties and structure of calcium copper titanium oxide (CaCu3Ti4O12), a perovskite structure Author(s): Collomb, A.; Physica Status Solidi A: Applied Research (1977), 41(2), 459-63. Abstract Only.
Magnetic structures of some [AC3](B4)O12 compounds with a perovskite-like strucure Author(s): Collomb, A.; Physica B+C: Physics of Condensed Matter + Atomic, Molecular and Plasma Physics, Optics (Amsterdam). Abstract Only.
Substitution of copper for a divalent metal in perovskite-type titanates Author(s): Deschanvres, Alfred; Bulletin de la Societe Chimique de France (1967), (11), 4077-8. Abstract Only.
B. Bochu, et al. Synthese at caracterisation d'une serie de titanates perowskites isotypes de [CaCu3](Mn4)O12, Journal of Solid State Chemistry, (1979), pp. 291-298, vol. 29.
A. Deschanvres, et al. Replacement de metal bivalent par le cuivre dans les titanates de type Perowskite, Bulletin De La Societe Chmique, (1967), pp. 4077-4078, vol. 11.

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