Skyworks Solutions, Inc.

Allumax Tti, LLC

Srinivas Polisetty

Michael David Hill

Constance M Griffith

David Bowie Cruickshank

David Martin Firor

Jeffrey Alan Shunkwiler

John Jianzhong Jiang

Iain Alexander Macfarlane

Scott David Wilson

James Gerard O'Callaghan

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—AlO—TiOsystem 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.

Low loss tangent dielectric based on spinel-structured oxide

The disclosed technology relates to a ceramic composition and an article formed therefrom. A ceramic article for radio frequency applications is formed of a ceramic material having a chemical formula represented by: BiYCaFeMVOor BiYCaFeVInO. The ceramic material has a composition such that a normalized change in saturation magnetization (Δ4πMs), defined as Δ4πMs=[(4πMs at 20° C.)−(4πMs at 120° C.)]/(4πMs at 20° C.), is less than about 0.35.

High saturation magnetization and high dielectric constant ferrites

Disclosed herein are embodiments of high Q, temperature stable materials with low dielectric constants. In particular, a two-phase material can form based on the rutile phase of titanium oxide along with a spinel structure of ZnAlO. This material can have a dielectric constant below 15 which is simultaneously temperature stable.

Temperature-stable, low-dielectric constant material with an ultra-low loss tangent

Disclosed herein are embodiments of composite hexagonal ferrite materials formed from a combination of Y phase and Z phase hexagonal ferrite materials. Advantageously, embodiments of the material can have a high resonant frequency as well as a high permeability. In some embodiments, the materials can be useful for magnetodielectric antennas.

Composite hexagonal ferrite materials

A method of forming a composite material for use as an isolator or circulator in a radiofrequency device comprises providing a low temperature fireable outer material, the low fireable outer material having a garnet or scheelite structure, inserting a high dielectric constant inner material having a dielectric constant above 30 within an aperture in the low temperature fireable outer material, and co-firing the lower temperature fireable outer material and the high dielectric constant inner material together at temperature between 650-900° C. to shrink the low temperature fireable outer material around an outer surface of the high dielectric constant inner material to form an integrated magnetic/dielectric assembly without the use of adhesive or glue.

Co-firing of low firing temperature dielectric materials with high bismuth garnet ferrites for miniaturized isolators and circulators

Disclosed herein are embodiments of low temperature co-fireable dielectric materials which can be used in conjunction with high dielectric materials to form composite structures, in particular for isolators and circulators for radiofrequency components. Embodiments of the low temperature co-fireable dielectric materials can be scheelite or garnet structures, for example, bismuth vanadate. Adhesives and/or glue is not necessary for the formation of the isolators and circulators.

Low firing temperature dielectric materials designed to be co-fired with high bismuth garnet ferrites for miniaturized isolators and circulators

A hexagonal ferrite material includes a Y phase hexagonal ferrite material having the composition SrCoFeOor SrNaCoScFeO, 0&#x3c;x&#x3c;2, doped with a trivalent element, a tetravalent element, and/or a transition metal.

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Frederick, MD, United States of America

Srinivas Polisetty