An electronic device component including a thermoset composite material is described herein. The electronic device component may be a structural component of the housing and define an exterior surface of the housing. The electronic device component may also be transparent to radio-frequency signals.

A wristwatch and a power saving method thereof are provided herein. The wristwatch comprises: a time indicating device, configured to provide time information; a housing, defining a receiving room; a short distance communication module disposed in the receiving room, configured to implement short distance wireless communication with an external device, the communication module comprising: a security element, configured to process user security data; and a first coil, coupled to the security element and configured to transmit electromagnetic signals to communicate with the external device; the wristwatch further comprising: a second coil, coupled to the communication module, configured to sense an external magnetic field to generate a sensing signal, the sensing signal provided for controlling the communication module to be turned on or off to enable or disable transmission of the electromagnetic signals of the first coil. The wristwatch can reduce power consumption.

An austenized ferritic stainless steel includes a first region including a first soft magnetic layer composed of a ferrite phase, a first non-magnetic layer composed of an austenized phase in which the ferrite phase is austenized, and a first mixed layer in which the ferrite phase and the austenized phase are mixed, the first mixed layer being formed between the first soft magnetic layer and the first non-magnetic layer, and a second region including a second non-magnetic layer composed of the austenized phase, the second non-magnetic layer having a thickness greater than that of the first non-magnetic layer.

An austenized ferritic stainless steel includes a first region including a first soft magnetic layer composed of a ferrite phase, a first non-magnetic layer composed of an austenized phase in which the ferrite phase is austenized, and a first mixed layer in which the ferrite phase and the austenized phase are mixed, the first mixed layer being formed between the first soft magnetic layer and the first non-magnetic layer, and a second region including a second non-magnetic layer composed of the austenized phase, the second non-magnetic layer having a thickness greater than that of the first non-magnetic layer.

A wearable device which is mountable on a wrist of a user includes a housing including a metal structure, a display positioned within the housing, wherein the display includes a metal layer positioned within the metal structure and spaced apart from the metal structure by a given gap, a printed circuit board (PCB) positioned within the housing and including a ground region, and a control circuit positioned on the PCB and configured to feed a first point of the metal structure. The metal layer is electrically connected with the ground region of the PCB at a second point spaced from the first point by a given angle.

A wearable device which is mountable on a wrist of a user includes a housing including a metal structure, a display positioned within the housing, wherein the display includes a metal layer positioned within the metal structure and spaced apart from the metal structure by a given gap, a printed circuit board (PCB) positioned within the housing and including a ground region, and a control circuit positioned on the PCB and configured to feed a first point of the metal structure. The metal layer is electrically connected with the ground region of the PCB at a second point spaced from the first point by a given angle.

The disclosed mobile electronic device may include a display, an enclosure supporting the display and comprising a conductive portion including at least one inward protrusion, and a ground plane positioned within the enclosure and comprising at least one channel, wherein the at least one inward protrusion extends within the at least one channel of the ground plane and a gap defined between the conductive portion of the enclosure and the ground plane forms a slot antenna that is configured to radiate electromagnetic signals through a portion of the display. Various other related methods and systems are also disclosed.

The disclosed mobile electronic device may include a display, an enclosure supporting the display and comprising a conductive portion, a ground plane positioned within the enclosure, wherein a gap defined between the conductive portion of the enclosure and the ground plane forms a slot antenna that is configured to radiate first electromagnetic signals through a portion of the display, the first electromagnetic signals radiated by the slot antenna being used for wireless communication in a first wireless communication band, and a patch antenna, comprising a substantially planar conductor, that is configured to radiate second electromagnetic signals, the second electromagnetic signals radiated by the patch antenna being used for wireless communication in a second wireless communication band different from the first wireless communication band. Various other related methods and systems are also disclosed.

An antenna is provided for a wearable personal computing device, such as a smartwatch. The antenna integrates with other components of the wearable device, such as a second antenna. For example, the first antenna may be a coupled loop antenna in proximity to a second antenna that may be a monopole antenna, without causing interference between the two antennas. In one example, the first antenna shares a common ground with the second antenna.

An antenna is provided for a wearable personal computing device, such as a smartwatch. The antenna integrates with other components of the wearable device, such as a second antenna. For example, the first antenna may be a coupled loop antenna in proximity to a second antenna that may be a monopole antenna, without causing interference between the two antennas. In one example, the first antenna shares a common ground with the second antenna.