Disclosed herein includes a wireless electronic device, including an outer casing, an antenna, and a metallic sheet. The outer casing may be electrically non-conductive. The antenna may be disposed within the outer casing and configured to perform wireless communication of signals at an operating wavelength of λ unit length. The metallic sheet may be disposed on a portion of the outer casing and placed at a distance of at least λ/25 unit length apart from the antenna. The metallic sheet may be configured to shield a subject exposed to energy radiated by the antenna to limit the specific absorption rate (SAR) of the subject to less than 1.6 W/kg.

A mobile device for reducing SAR (Specific Absorption Rate) includes a ground element, a first radiation element, a second radiation element, and a third radiation element. The ground element has a slot. The first radiation element is coupled to a feeding point. The second radiation element is coupled to the ground element. The third radiation element is coupled to the feeding point and has a hollow portion. The third radiation element is substantially surrounded by the ground element, the first radiation element, and the second radiation element. An antenna structure is formed by the ground element, the first radiation element, the second radiation element, and the third radiation element.

An information handling system may include a processor; a memory; a power management unit (PMU); a wireless interface adapter to communicate via an antenna to a wireless network; an antenna controller to: receive, via a sideband wireless communication link, network telemetry data descriptive of network operating frequency bands and network frequency channels from a remote optimizing information handling system management system for a wireless protocol; receive operating characteristics associated with the operation of the information handling system indicating at least one detuning trigger for a network operating frequency band for a wireless protocol link for the wireless network; execute instructions of an antenna tuning algorithm to determine a tune state of the antenna, and issue instructions to a radio frequency switch including a resistor, inductor, and capacitor (RLC) circuit tuner at the antenna to tune the antenna to transceive data at the network operating frequency band to a target frequency commensurate with the network telemetry data descriptive of the wireless link according to the tune state.

A wireless device comprises a radiating system that comprises and a radiating structure that operates in at least two frequency regions. The radiating structure comprises: a ground plane layer having a first connection point; a single radiation booster having a first connection point; a radiofrequency system comprising a first input port, a plurality of external output ports, and a plurality of branches, at least some of the plurality of branches being connected to a common point connected to the first input port, wherein each of the plurality of external output ports provides operation in at least one of the at least two frequency regions of operation; and a first internal port defined between the first connection point of the radiation booster and the first connection point of the ground plane layer, the first internal port being connected to the first input port of the radiofrequency system.

An antenna assembly includes a ground plane, a radiator, and a resonant circuit. The ground plane has a slot with an open end. The radiator spans the slot and has a shape configured to radiate electromagnetic energy at a first frequency and at a second frequency. The resonant circuit spans the slot in parallel with the radiator and is positioned nearer the open end than an opposite end of the slot.

A foldable electronic device is provided. The foldable electronic device includes a first housing, a second housing rotatably coupled to the first housing, at least one antenna disposed in at least one of the first housing or the second housing, a first grip sensor disposed in the first housing, a second grip sensor disposed in the second housing, and at least one processor. The at least one processor is configured to obtain a first detection value through the first grip sensor, obtain a second detection value through the second grip sensor, and decrease the strength of a signal output from the at least one antenna based on the first detection value and the second detection value.

A wireless communication device includes at least one antenna configured to transmit or receive a signal, and a frequency selection surface arranged adjacent to the at least one antenna and configured to diffract the signal generated from the at least one antenna, wherein the frequency selection surface includes a transparent substrate on which a plurality of unit cells are defined, and a plurality of conductive patterns arranged in the plurality of unit cells, respectively.

A dual antenna with a shared radiator includes a radiator unit, a first feed-in unit, a second feed-in unit, a sensing module and a ground unit. The first feed-in unit and the second feed-in unit are respectively coupled with the radiator unit. The sensing module is connected to a substantial center of the radiator unit and used for sensing a distance between the radiator unit and an external object through the radiator unit. The ground unit is connected to the sensing module. The first feed-in unit is used to send or receive a first radio frequency signal together with the radiator unit, and the second feed-in unit is used to send or receive a second radio frequency signal together with the radiator unit.

A microstrip antenna including: a substrate; a radiating slotted patch; a square plate; and a coaxial feed, wherein the coaxial feed further comprises an inner central conducting pin; wherein the substrate is sandwiched between the radiating slotted patch and the square plate, and wherein the coaxial feed is connected to the square plate, and the inner central conducting pin of coaxial feed passes through the substrate and is connected to the radiating slotted patch.

A remedial signal for potentially harmful radiation that is emitted by a portable electronic battery powered communication device is implemented directly within the handset of the portable communication device the portable communication device is operated by a microprocessor and the remedial signal module is controlled by an algorithm in the microprocessor wherein the algorithm obtains information concerning radio frequency communications associated with the portable telecommunications device from the transceivers of the device.