3m Innovative Properties Company

Northrop Grumman Systems Corporation

USA As Represented by Secretary of the Navy

University of Minnesota

Dsp Group Limited

Robert A Sainati

Swagata R Banerjee

William C Egbert

Ronald David Jesme

Chester Piotrowski

Edward D Goff

Jaewon Kim

Gerald L Karel

Ching-Long Tsai

David K Misemer

Michael J Balk

Jacob M Parrow

James P McGee

Jared Wall

Philip Cheung

Matthew P Contons

David Nohre

Matthew H Frey

Raymond Patrick Johnston

Douglas Scott Dunn

Matthew S Stay

William A Mittelstadt

Scott D Pearson

Jon A Kirschhoffer

Joseph Clark Carls

Mitchell B Grunes

John M Kruse

Michael E Hamerly

Kevin W Gotrik

Charles David Hoyle

Haiyan Zhang

Justin M Johnson

Peter M Eisenberg

Lijun Zu

Michael C Molinet

Robert D Lorentz

Michele A Waldner

Katherine A Brown

Terrence H Joyce

Janet T Keller

John R Lamberg

Kenneth A P Meyer

Rhonda Rene Franklin

David P Erickson

John J Sullivan

Paul J Northey

Gregory L Abraham

Edmund J Ring

Nancy H Phillips

Jacob D Chatterton

Richard L Sheehan, Jr

Gregory D Allen

William J Kelliher, Jr

Andrew J Stanland

Aditya Dave

Michael J Siegler, Ii

Diane E Morel

Robert C Francis

Chanjoon Lee

John J Gropelli, Jr

Matthew C Messina

John Lamberg

Gene J Hickok

Barry W Kostyk

Subhalakshmi M Ananthanarayanan

John W Van Bogart

Sai-Kit K Tong

Janelle D Hildebrandt

Kaileen Chen

Catherine H Behun

Ralph C Olesen

A body spin detection device for a projectile, the device including a perturbing element and a detection element electrically connected to detection circuitry in the projectile. The detection circuitry configured to receive, via the detection element, a first and second input signals and determine that the first input signal is different from the second input signal based on signal characteristics for the first and second input signals. The detection circuitry is further configured to determine a spin rate for at least one of the despun control portion and the chassis by determining a time period between receiving the first input signal and the second input signal.

Detecting body spin on a projectile

A patterned article includes a unitary polymeric layer and a plurality of electrically conductive elements embedded at least partially in the unitary polymeric layer. Each electrically conductive element includes a conductive seed layer having a top major surface and an opposite bottom major surface in direct contact with the unitary polymeric layer, and includes a metallic body disposed on the top major surface of the conductive seed layer. The metallic body has a bottom major surface and at least one sidewall. The bottom major surface contacts the conductive seed layer. Each sidewall is in direct contact with the unitary polymeric layer and extends from the bottom major surface of the metallic body toward or to, but not past, a top major surface of the unitary polymeric layer. The conductive elements may be electrically isolated from one another. Processes for making the patterned article are described.

Patterned article including electrically conductive elements

A compact munition antenna system that includes a curvilinear transmit antenna on a top and bottom of a ring-shaped substrate, and a curvilinear receive antenna on the top and bottom of the substrate. The transmit antenna and receive antenna are positioned opposite one another on the substrate, and are separated by a pair of isolation barriers to reduce coupling of the two antennas. The munition antenna system may be mounted on a metal cylindrical portion of a guidance system in a nose section of the munition, using a vertical convex surface of the cylindrical portion and a horizontal surface of the munition as a reflector for improving antenna performance.

Compact antenna system for munition

An antenna system may include a source antenna, a frequency selective surface (FSS), and a second antenna or a fluidic channel associated with a housing. In both examples, the FSS has a first side and a second side opposite from the first side. The first side includes horizontally oriented unit cells positioned as multiple columns of unit cells. The first side of the FSS faces the source antenna and is separated from the source antenna by a defined distance. The housing is positioned on the second side of the FSS. In the latter example, the fluidic channel of the housing includes one of air or deionized water. The fluidic channel is positioned on a portion of the second side of the FSS that is opposite to a subset of the horizontally oriented unit cells on the first side of the FSS.

Fabry-Perot cavity antenna system having a frequency selective surface

Antennas suitable for use in RFID devices include an insulating substrate and a first conductive micropattern disposed on or in the substrate, the first conductive micropattern defining a contiguous mesh conductor. The first conductive micropattern forms an antenna responsive to at least a frequency of 915 MHz, and includes interconnected traces having a trace width in a range from 0.5 to 20 microns. Furthermore, the first conductive micropattern is characterized by an open area fraction of at least 80% or 90%. RFID devices include such an antenna and an integrated circuit configured to transmit and receive signals using the antenna. Cards, such as financial transaction cards or identification cards, include such an antenna carried by a card layer.

Transparent micropatterned RFID antenna and articles incorporating same

In general, the disclosure describes an RFID tag designed such that the tag is both covert and not easily blocked from the interrogation signal by the hand or other body part of a person. In particular, the RFID tag is designed to have a long, narrow aspect that allows placement of the tag in locations on or in a book that are inconspicuous to the casual observer while extending beyond a hand of a person holding the book by the spine on or near a geometry centerline. The RFID tag includes a dipole segment and a loop segment coupled to the dipole segment. The loop segment of the modified dipole antenna provides the antenna with larger signal strength than conventional dipole antennas. Moreover, the conductive loop segment also provides improved impedance matching capabilities to allow the modified dipole antenna to match the impedance of an integrated circuit (IC) chip of the RFID tag.

RFID tag with a modified dipole antenna

This disclosure describes a radio frequency identification (RFID) tag that includes a three-dimensional (3D) loop antenna. The 3D loop antenna includes a first conductive portion having a length and width that substantially exceed a thickness. The length and width of the first conductive portion substantially lie in a first plane. The 3D loop antenna includes a second conductive portion having a length and width that substantially exceed a thickness. The length and width of the second conductive portion substantially lie in a second plane that is substantially parallel to the first plane. An RFID circuit electrically connected to the loop antenna excites a current through the first and second conductive portions in a current loop that lies in a third plane that is not substantially parallel to the first and second planes. In some instances the third plane may be substantially perpendicular to the first and second planes.

Radio frequency identification (RFID) tag including a three-dimensional loop antenna

The present disclosure relates to multiple embodiments of a signage having radio-frequency responsive features, methods of making and using the signage, and the performance characteristics of the signage. These embodiments include a cutout, aperture, or opening in an electrically conductive sign into which or adjacent to which is placed an RFID tag or chip.

Radio frequency identification functionality coupled to electrically conductive signage

The present disclosure relates to multiple embodiments of a signage having radio-frequency responsive features, methods of making and using the signage, and the performance characteristics of the signage. These embodiments include a cutout, aperture, or opening in an electrically conductive element into which or adjacent to which is placed an RFID tag or chip.

One exemplary electrically conductive, RFID-enabled signage includes (1) an electrically conductive article including an opening and (2) an assembled device that is coupled to the electrically conductive article to provide RFID functionality to the electrically conductive article. One exemplary kit includes (1) an RFID IC arrangement including conductive leads adjacent to an integrated circuit; (2) an insert attached to the RFID IC arrangement; and (3) an attachment device capable of attaching the RFID IC arrangement-insert combination to an electrically conductive signage such that the RFID IC arrangement is positioned to span at least a portion of an opening in the signage and to electrically couple the integrated circuit to the electrically conductive signage. One exemplary method involves providing an assembled device including and RFID IC arrangement and an insert and coupling the assembled device with an electrically conductive signage.

RFID packaging and attachment methods and devices

Various systems and methods of handling items such as files are disclosed, including systems and methods for polling RFID-tagged items while they are stored in storage areas.

Radio frequency identification in document management

Methods of monitoring items and/or materials from a manufacturing process. One embodiment of the invention provides a method of monitoring items and/or materials from a manufacturing process using a plurality of RFID tagged containers, and a plurality of stations associated with different portions of the manufacturing process, where each station includes an RFID reader.

Methods of monitoring items or material from manufacturing processes

Growing community of inventors

Bloomington, MN, United States of America

Robert A Sainati