Low loss tangent dielectric based on spinel-structured oxide
AssigneeSkyworks Solutions, Inc.
InventorsMichael David Hill, Srinivas Polisetty
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Abstract
Disclosed herein are embodiments of high Q, temperature stable materials with low dielectric constants. In one aspect, a low loss dielectric material includes one or more transition metal oxides based on the (Zn, Ni, Co)O—Al2O3—TiO2 system comprising an aluminate comprising one of cobalt (Co) or nickel (Ni) crystallized in a spinel structure. The low loss dielectric material additionally comprises one or more of: a titanate comprising the one of Co or Ni crystallized in a spinel structure, an aluminum oxide and a titanium oxide crystallized in a rutile structure.
Claims20
A low loss dielectric material for radio frequency applications, comprising:
- an aluminate including one of cobalt (Co) or nickel (Ni) crystallized in a spinel structure;
- and
- a titanate including one of Co or Ni crystallized in a spinel structure,
- wherein the low loss dielectric material has a loss tangent less than 0.0001, a dielectric constant of 8-15 and a temperature coefficient of resonant frequency having a magnitude less than 20 ppm/° C.
A radiofrequency component comprising:
- a ceramic disk formed of a low loss dielectric material, the low loss dielectric material including an aluminate including one of cobalt (Co) or nickel (Ni) crystallized in a spinel structure, and a titanate including one of Co or Ni crystallized in a spinel structure.
A method of manufacturing a component for a radio frequency device, the method comprising:
- mixing component oxide powders to form a mixed powder;
- calcining the mixed powder;
- forming the calcined mixed powder into a ceramic disk;
- and
- sintering the ceramic disk, thereby forming the component formed of a low loss dielectric material, the low loss dielectric material including an aluminate including one of cobalt (Co) or nickel (Ni) crystallized in a spinel structure, and a titanate including one of Co or Ni crystallized in a spinel structure.
Dependencies are inferred from the claim text.