Harris Corporation

Andrew J Thomson

Michael D Pleskach

Terry Provo

Babak R Ghazi

Bayardo A Payan

Frederick J Jr

Alexandra L Wilson

Stephen Becker

A method for making an embedded toroidal inductor () includes forming in a ceramic substrate () a first plurality of conductive vias () radially spaced a first distance from a central axis () so as to define an inner circumference. A second plurality of conductive vias () is formed radially spaced a second distance about the central axis so as to define an outer circumference. A first plurality of conductive traces () forming an electrical connection between substantially adjacent ones of the first and second plurality of conductive vias is formed on a first surface () of the ceramic substrate. Further, a second plurality of conductive traces () forming an electrical connection between circumferentially offset ones of the first and second plurality of conductive vias is formed on a second surface of the ceramic substrate opposed from the first surface to define a three dimensional toroidal coil.

Method for forming an inductor in a ceramic substrate

Embedded toroidal inductors

Method for forming a transformer () in a ceramic substrate. The method can include the steps of forming at least one conductive coil () comprising a plurality of turns about an unfired ceramic toroidal core region () defined within an unfired ceramic substrate (). The method can also include the step of co-firing the unfired ceramic toroidal core region (), the unfired ceramic substrate (), and the conductive coil () to form an integral ceramic substrate structure with the conductive coil at least partially embedded therein.

Embedded toroidal transformers in ceramic substrates

A toroidal inductor, including a substrate (), a toroidal core region () defined within the substrate, and a toroidal coil including a first plurality of turns formed about the toroidal core region and a second plurality of turns formed about the toroidal core region. The second plurality of turns can define a cross sectional area () greater than a cross sectional area () defined by the first plurality of turns. The substrate and the toroidal coil can be formed in a co-firing process to form an integral substrate structure with the toroidal coil at least partially embedded therein. The first and second plurality of turns can be disposed in alternating succession. The toroidal core region can be formed of a substrate material having a permeability greater than at least one other portion of the substrate.

Embedded toroidal inductor

Embedded capacitors and a method for manufacturing the embedded capacitors. The method can include the steps of forming at least one bore () in a dielectric substrate (). The dielectric substrate can be mechanically punched or laser cut to form the bore. The bore can be filled with a conductive material () to form a first electrode (). A conductor () can be formed on the dielectric substrate, the conductor not being electrically continuous with the first electrode. A depth and/or cross sectional area of the bore can be selected to provide a desired amount of capacitive coupling between the electrode and the conductor. At least a second bore can be formed in the dielectric substrate and filled with a conductive material to form a second electrode. The second electrode can be electrically connected to the first electrode.

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Indialantic, FL, United States of America

Andrew J Thomson