A COSA as an optical communication component that can prevent energy radiated in a package from causing performance degradation includes a DC block capacitor that is mounted on an upper surface of the package and located at a position different from those of a SiP chip and an optical modulator driver IC to cut off a DC signal included in a RF signal to be transmitted to the IC and a lid provided over an upper portion of the package. A separation projecting portion of the lid projecting toward an upper surface of the package separately defines a region where the capacitor is present and a region where the SiP chip and the IC are present. The separation projecting portion is connected to GND of the package, and the lid is at a GND potential.

This document describes a thermal-control system that is integrated into a media-streaming device. The thermal-control system includes a combination of heat spreaders and materials with high thermal-conductivity. The thermal-control system may spread, transfer, and dissipate energy from a thermal-loading condition effectuated upon the media-streaming device to concurrently maintain temperatures of multiple thermal zones on or within the media-streaming device at or below multiple respective prescribed temperature thresholds.

Wireless electronic devices include one or more wireless antennas to provide for wireless communications. The antenna cables are routed internally within the device and typically noise from components located on a circuit board may couple to the antenna cables and cause a degradation in wireless performance, impact antenna sensitivity and cause packet loss. Utilizing raised pathways in a heat sink utilized for thermal transfer of heat to a housing enables tunnels to be formed between the housing and the heat sink. Routing the antenna cables through the tunnels improves noise isolation for the antenna cables while still maintaining the heat transfer. The raised pathways are configured to not interfere with components on the circuit board or components included in the housing. The wireless antennas may be mounted within the housing instead of on the board so no portion of the antenna cables are located on the circuit board.

Various arrangements of a nested radio frequency (RF) shield system are detailed herein. The system can include an internal RF shield that includes one or more tabs to be soldered to a printed circuit board (PCB). The system can further include an external RF shield that also includes tabs that are soldered to a PCB. When the internal RF shield and the external RF shield are installed on the PCB, protrusions of the shields nest together to block RF without requiring the shields be soldered together.

A method and device for measuring electromagnetic fields embodied in an electromagnetic field (EMF) channel that defines a lumen for receiving an EMF-measuring sensor. The EMF channel includes coaxial inner first layer of Mu-metal surrounded by a second layer of interlaced mesh copper, wherein the first layer is configured to attenuate the magnetic field and the copper attenuates the electric field of external, undesired EMFs, thereby promote propagation of a desired EMF to the housed senor.

This document describes a thermal-control system that is integrated into a media-streaming device. The thermal-control system includes a combination of heat spreaders and materials with high thermal-conductivity. The thermal-control system may spread, transfer, and dissipate energy from a thermal-loading condition effectuated upon the media-streaming device to concurrently maintain temperatures of multiple thermal zones on or within the media-streaming device at or below multiple respective prescribed temperature thresholds.

This document describes a thermal-control system that is integrated into a media-streaming device. The thermal-control system includes a combination of heat spreaders and materials with high thermal-conductivity. The thermal-control system may spread, transfer, and dissipate energy from a thermal-loading condition effectuated upon the media-streaming device to concurrently maintain temperatures of multiple thermal zones on or within the media-streaming device at or below multiple respective prescribed temperature thresholds.

An electronic device includes a signal processor, a substrate, and a conductive housing. The signal processor includes an oscillator that outputs oscillation signal. The substrate has a ground component, the signal processor being disposed on the substrate. The conductive housing is connected to a first site of the ground component and to a second site that is different from the first site. The first site and the second site are disposed at positions where a first area of the housing that is an odd-numbered multiple of ¼ wavelength of the oscillation signal away from the first site overlaps at least part of a second area of the housing that is a multiple of ¼ wavelength of the oscillation signal away from the second site.

Disclosed is a device communicably coupled to a power transmission line and capable of launching transverse electromagnetic waves onto the transmission line. The waves propagate data received from a data source connected to the device through a center conductor surrounded by a shield conductor. The device may include a reflector and a coupler adjacent to each other, the reflector electrically connected to the shield conductor and the coupler electrically connected to the center conductor at an unshielded connection point, wherein time-varying E-fields between the reflector and coupler are caused by the data received from the data source, and induce a transverse magnetic wave that propagates longitudinally along the surface of the transmission line.

An information handling system to wirelessly transmit and receive data may include a base chassis including a metal C-cover and metal D-cover to house a processor, a memory, and a wireless adapter, the metal C-cover to house a speaker grill, the speaker grill covering a speaker to emit audio waves; the speaker grill formed within the C-cover to emit a target radio frequency (RF) including a slot formed around a portion of the speaker grill forming a peninsula on the speaker grill that is physically separated from the C-cover; an antenna element placed behind the speaker grill and operatively coupled to the wireless adapter; an electromagnetic interference (EMI) shield forming a cavity enclosing the speaker and the antenna element, including a plurality of metallic shielding walls extending from the C-cover to a D-cover of the information handling system; and a conductive rubber gasket placed between the plurality of conductive walls and the D-cover to shield the cavity from EMI sources.