Skyworks Solutions, Inc.

Allumax Tti, LLC

John Jianzhong Jiang

Michael David Hill

David Bowie Cruickshank

David Martin Firor

Jeffrey Alan Shunkwiler

Srinivas Polisetty

Iain Alexander Macfarlane

Neil Bruce Coats

The disclosed technology generally relates dielectric materials and methods of forming the same, and more particularly to a combination of co-fireable dielectric materials that can be attached to each other without the use of adhesives. In an aspect, a composite article comprises a magnetic portion comprising a nickel zinc ferrite. The composite article additionally comprises a non-magnetic portion contacting the magnetic portion, the non-magnetic portion comprising a spinel-structured oxide comprising MgAlTiOand having a dielectric constant between about 7 and 14, wherein 0<x≤1.

Methods of forming articles having spinel-based oxides containing magnesium, aluminum and titanium

Disclosed herein are embodiments of low temperature co-fireable barium tungstate materials which can be used in combination with high dielectric materials, such as nickel zinc ferrite, to form composite structures, in particular for isolators and circulators for radiofrequency components. Embodiments of the material can include flux, such as bismuth vanadate, to reduce co-firing temperatures.

Modified barium tungstate for co-firing

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

The disclosed technology generally relates dielectric materials, and more particularly to a combination of co-fireable dielectric materials that can be attached to each other without the use of adhesives. In an aspect, a composite article comprises a magnetic portion comprising a nickel zinc ferrite. The composite article additionally comprises a non-magnetic portion contacting the magnetic portion, the non-magnetic portion comprising a spinel-structured oxide comprising MgAlTiOand having a dielectric constant between about 7 and 14, wherein 0<x≤1.

Spinel-based oxides containing magnesium, aluminum and titanium and methods of forming articles having same

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

Disclosed herein are embodiments of low temperature co-fireable scheelite materials which can be used in combination with high dielectric materials, such as nickel zinc ferrite, to form composite structures, in particular for isolators and circulators for radiofrequency components. In some embodiments, the scheelite material can include aluminum oxide for temperature expansion regulation.

Growing community of inventors

Leesburg, VA, United States of America

John Jianzhong Jiang