Cisco Technology, Inc.

Alpesh Umakant Bhobe

Jianquan Lou

Joel Richard Goergen

Hailong Zhang

D Brice Achkir

Amendra Koul

David Nozadze

Jessica Kiefer

Xiaoxia Zhou

Jinghan Yu

Scott Hinaga

Yingchun Shu

Xiao Li

Kameron Rose Hurst

Mehmet Onder Cap

Madeline Marie Roemer

Hongmei Fan

Guangcao Fu

Quanhui Sun

Vic Hong Chia

George Edward Curtis

Keith Frank Tharp

Dylan Thomas Walker

Jun Liu

Feng Ji

Jerrold Mark Pianin

Li Xiaogang

Shun Li

Adriana Del Pilar Rangel

Philippe Sochoux

Huasheng Zhao

John Scott Scheeler

Xiangpeng Yao

Juhi Garg

Baojun Zhang

Aaron P Tondra

Chen Peng

Zheng Yin

Phillipe Sochoux

An electromagnetic absorber includes a body arranged to surround a perimeter of an integrated circuit chip. The body is arranged to absorb electromagnetic radiation leaking from the integrated circuit chip. The body defines an aperture through which the integrated circuit chip extends and a plurality of slots positioned around the aperture.

Slotted absorber

A structure includes a first copper layer and a first carbon layer applied directly to a surface of the first copper layer, a second copper layer and a second carbon layer applied directly to a surface of the second copper layer, and an insulating core disposed between the first and second copper layers. Each of the first carbon layer and the second carbon layer faces toward and directly contacts the insulating core. The structure provides electrical power to a component of an electronic device.

Providing one or more carbon layers to a copper conductive material to reduce power loss in a power plane

A conductive signal transmission structure for a printed circuit includes a copper material and a graphene layer disposed within the copper material at a depth below a surface of the structure. The depth of the graphene layer is further within a skin depth region of the structure when a transmission signal applied to the conductive signal transmission structure has a signal speed of at least 112 Gbps and/or a Nyquist frequency that is at least about 14 gigahertz (GHz).

Integrating graphene into the skin depth region of high speed communications signals for a printed circuit board

A method in which a plurality of transmit signals are generated at data rates that are offset from each other by inserting an idle data block into a data stream for one or more transmit signals of the plurality of transmit signals to increase a data rate for the one or more transmit signals, thereby minimizing detectable electromagnetic interference at a particular frequency. The method further includes converting each transmit signal of the plurality of transmit signals to a corresponding optical transmit signal of a plurality of optical transmit signals for transmission via a corresponding channel of a plurality of channels of an optical network device and transmitting the plurality of optical transmit signals via respective ones of the plurality of channels for transmission on respective optical fibers.

Dispersing data rate to mitigate electromagnetic interference

Presented herein is an air vent including a plate, and a non-uniform array of openings extending through a thickness of the plate. The non-uniform array of openings arranged to admit a flow of cooling air through the plate. The plate and the non-uniform array of openings are arranged to attenuate electromagnetic interference (EMI) emitted through the plate.

Air vent with openings of non-uniform size and location for improved EMI shielding

In one embodiment, an apparatus includes an array of transformers and common mode chokes each comprising a magnetic core and windings wound around the magnetic core at opposing locations on the magnetic core, and a retaining groove on each of the magnetic cores to maintain the windings in their opposing locations on the magnetic core. The transformers and common mode chokes are positioned in the array with the windings on each of the magnetic cores located offset to the windings of adjacent magnetic cores in the array to reduce crosstalk and improve common mode noise rejection.

Biorthogonal windings on transformer and common mode choke for network port

A system includes a millimeter (MM) wave radar detector, where the MM wave radar detector generates signal data associated with a person of interest (POI) within a field of view of the MM wave radar detector. The system further includes an Access Point (AP) coupled with the MM wave radar detector. The AP includes a computing device to receive and analyze the signal data provided by the MM wave radar detector to determine a movement or action of the POI within the field of view, and facilitate generation of a feedback response in response to the determined movement or action of the POI.

System, method, and computer readable storage media for millimeter wave radar detection of physical actions coupled with an access point off-load control center

A method in which a plurality of transmit signals are generated at data rates that are offset from each other to minimize detectable electromagnetic interference at a particular frequency. The method further includes converting each transmit signal to a corresponding optical transmit signal of a plurality of optical transmit signals for transmission via a corresponding channel of a plurality of channels of an optical network device and transmitting the plurality of optical transmit signals via respective ones of the plurality of channels for transmission on respective optical fibers.

A conductive signal transmission structure for an electronic device (e.g., a printed circuit board of an electronic device) includes a copper material and a graphene layer disposed within the copper material at a depth below a surface of the structure. The depth of the graphene layer is further within a skin depth region of the structure when a transmission signal applied to the conductive signal transmission structure has a signal speed of at least 112 Gbps.

A conductive signal transmission structure for an electronic device (e.g., a printed circuit board of an electronic device) includes a copper material and a graphene layer disposed within the copper material at a depth below a surface of the structure. The depth of the graphene layer is further within a skin depth region of the structure when a transmission signal is applied to the structure that is in the GHz frequency range.

A power plane structure for a printed circuit board includes a copper layer, and a carbon layer applied directly to a surface of the copper layer. The carbon layer can include graphite or graphene. In additional embodiments, a duplicate power plane structure for a printed circuit board includes two power planes separated by an insulating core, each power plane including a copper layer and a carbon layer applied directly to a surface of the copper layer.

An apparatus suitable for providing ventilation and electromagnetic interference (EMI) containment for a computing device includes a first strip and a second strip. The first strip is sized to span ventilation openings of a computing device covering. The second strip intersects the first strip while also spanning the ventilation openings. Thus, the first strip and the second strip cooperate to define airflow openings within the ventilation openings, the airflow openings being sized to inhibit EMI from exiting the computing device via the ventilation openings.

Strip-based ventilation solution for electronic equipment

In one embodiment, a method includes positioning a first component for generating a differential signal on a printed circuit board, positioning a second component for receiving the differential signal on a printed circuit board, and routing a differential conductor pair on a path between the first component and the second component, wherein the path comprises at least one turn in which the differential conductor pair changes direction. A first conductor and a second conductor of the differential conductor pair each comprise a plurality of sets of bends proximate to the turn to provide skew compensation while reducing differential mode to common mode conversion and wherein each of the sets of bends in the second conductor is aligned with one of the sets of bends in the first conductor.

Growing community of inventors

Sunnyvale, CA, United States of America

Alpesh Umakant Bhobe