Electronic device includes a housing including a conductive portion extended from at least a portion of a lateral surface of the electronic device to an inner space of the electronic device; an antenna module accommodated in the housing, the antenna module including a PCB including a first side and a second side opposite to the first side, one or more antenna elements disposed at the first side of the PCB, and a wireless communication circuit disposed at the second side of the PCB and configured to transmit and/or receive a radio signal through at least one antenna element of the one or more antenna elements; and a conductive member accommodated in the housing and including a supporting portion and a connecting portion extended from the supporting portion and connected to the conductive portion of the housing, the supporting portion configured to support the antenna module such that the first side of the PCB faces in a direction toward the lateral surface of the electronic device, and the connecting portion including a hole through which a fastening member is disposed to fasten the conductive member to the conductive portion of the housing. Heat generated by the antenna module is to be transferred to the conductive portion of the housing.

A radio frequency connector includes a substrate, a first ground plane disposed upon the substrate, a signal conductor having a first contact point, with the first contact point being configured to electrically mate with a second contact point, and a first ground boundary configured to electrically mate with a second ground boundary, with the first ground boundary being formed as an electrically continuous conductor within the substrate.

An example radio frequency (RF) front-end module may include a printed circuit board (PCB) including a ground plane, an RF integrated circuit (RFIC) including RF components mounted on the PCB, and an antenna array on the PCB. The antenna array may operate at a first resonant frequency in a wireless communication network. Further, the RF front-end module may include a slot defined in the ground plane to provide a second resonant frequency in the wireless communication network. The second resonant frequency is lower than the first resonant frequency.

The present disclosure provides a flexible circuit board for multiple signal transmission including a first dielectric layer; a plurality of first side grounds formed on one surface of the first dielectric layer to be parallel; first signal lines formed between the plurality of first side grounds; and a plurality of through holes which is formed in each of the plurality of first side grounds with an interval, along a length direction of the first side grounds.

An electronic device includes a first electric element a second electric element, and a circuit board. The circuit board is configured to deliver a signal between the first electric element and the second electric element. The circuit board includes a first portion, a second portion, and a third portion. The second and third portions extend from the first portion with the first portion therebetween. The circuit board also includes at least one signal line extending from the second portion to the third portion, a plurality of ground patterns extending from the second portion to the third portion, a plurality of first conductive vias positioned at the second portion and electrically connecting the plurality of ground patterns, and a plurality of second conductive vias positioned at the third portion and electrically connecting the plurality of ground patterns. The plurality of ground patterns include a meander form at the first portion.

In one embodiment, a medical device includes an instrument including a distal end configured for inserting into a body part, and a position sensor comprising a flexible printed circuit, which comprises alternating conductive and dielectric layers and is wrapped around the distal end of the instrument, the conductive layers including at least one inner layer, which is patterned with traces forming a coil, and multiple outer layers overlying the at least one inner layer and configured for connection to an electrical ground so as to shield the coil from electromagnetic interference.

A shielding film and a circuit board are provided. The shielding film includes a first film layer (11), a contrast structural layer (12) and an electromagnetic shielding layer (13). The first film layer (11) is disposed on a first side of the electromagnetic shielding layer (13). The contrast structural layer (12) is disposed on the first side of the electromagnetic shielding layer (13). The grayscale value of the color of the contrast structural layer (12) is greater than the grayscale value of the color of the first film layer (11). In the contrast structural layer (12) and the first film layer (11), a hollowed-out pattern of an identification code is formed on a layer away from the electromagnetic shielding layer (13).

A printed circuit board includes a plurality of layer structures disposed in a stacked manner, and the printed circuit board has a disposing face. A differential pair unit and a shielding structure for shielding the differential pair unit are disposed on the disposing face. The differential pair unit includes two signal via holes, each signal via hole passes through the plurality of layer structures, and an anti-pad corresponding to each signal via hole is disposed on a ground layer through which the signal via hole passes. A part of metal of a ground layer is spaced between two anti-pads. Each signal corresponds to one anti-pad, and a ground layer is spaced between anti-pads.

To improve the EMC performance of an electronic device on which a motor is mounted. A circuit board (12) comprises a substrate (130), lands (P4, P5) that are formed on a main surface (131) of the substrate (130) and are for connecting a coil (17) of the motor (11), a magnetic detection element (122) that outputs a detection signal corresponding to a position of a rotor (14) of the motor (11), and a motor drive control IC (121) that generates drive signals (VOUTA, VOUTB) for driving the motor (11) based on the detection signal, wherein the magnetic detection element (122) and the motor drive control IC (121) are arranged in a region (AR1) on a side of a minor angle (θ) formed by a first straight line (a) and a second straight line (b) among regions that are on the main surface and are defined by the first straight line and the second straight line when viewing the substrate (130) from the main surface side, the first straight line connecting the land (P4) and an axis of an output shaft of the motor (11), the second straight line connecting the land (P5) and the axis of the motor (11).

A system for power delivery network (“PDN”) isolation may include a multi-layer printed circuit board (“PCB”) in which a power distribution layer has a root conductive region and two or more branch conductive regions fanning out from the root conductive region. Each branch conductive region may be insulated from other branch conductive regions by a non-conductive region. Each branch conductive region may have at least one power delivery connection. Each of various electronic circuits mounted on the PCB and sharing the same PDN may be shorted to one of the branch conductive regions.