According to one embodiment of the disclosure, an electronic device comprises: a printed circuit board including a conductive pattern; and a tuner mounted on the conductive pattern and electrically connected to the conductive pattern, wherein the tuner comprises: a ground; a first conductive pad; a first switching element electrically connected between the ground and the first conductive pad; and a second conductive pad electrically disconnected with the ground, wherein the conductive pattern may comprise: a first electrical path in electrical contact with the first conductive pad; and a second electrical path in electrical contact with the second conductive pad and electrically shorted to the first electrical path. Various other embodiments are possible.

A printed circuit board includes: an insulating layer including an insulating resin and first fillers dispersed in the insulating resin; and a wiring layer disposed on the insulating layer. The first filler includes a core, and a shell coated on a surface of the core, and the shell has a dielectric constant higher than that of the core.

A wireless communication system including an electrically conductive passive medium capable of simultaneously propagating therealong electromagnetic first and second currents at different respective frequencies F1 and F2, the electrically conductive passive medium including an electrically conductive first passive linear medium portion adjacent an electrically conductive first passive nonlinear medium portion, the first passive nonlinear medium portion capable of generating an intermodulation current based on a nonlinear interaction between the first and second currents, the intermodulation current having a frequency Fi equal to nF1+mF2 and propagating along the first passive nonlinear medium portion, m and n being positive or negative integers; and a first magnetic film disposed proximate an electrically conductive external surface of the first linear medium portion, such that when the first and second currents propagate along the first passive linear medium portion toward the first passive nonlinear medium portion, the magnetic film reduces or prevents the generation of the intermodulation current in the first passive nonlinear medium portion by attenuating at least portions of the first and second currents.

An electronic device is provided that balances the force applied to temperature control elements such that stress within components of the electronic device can be effectively managed. In one example, an electronic device is provided that includes a printed circuit board (PCB), a chip package, a thermal management system, a thermal spreader, and first and second biasing members. The chip package is mounted to the PCB. The thermal management system and spreader are disposed the opposite of the chip package relative to the PCB. The first biasing member is configured to control a first force sandwiching the chip package between the thermal spreader and the PCB. The second biasing member is configured to control a second force applied by the thermal management system against the thermal spreader. The first force can be adjusted separately from the second force so that total forces applied to the chip package and PCB may be effectively balanced.

A radio frequency and electromagnetic emission shield employed on wireless personal and portable electronic devices, containing one or more layers of radio frequency (RF) or electromagnetic (EM) screening material, shielding the user from harmful RF or EM radiation, or a redirection antenna that receives all RF signals, and redirects those signals away from the user. The RF emission shield may be contained within a plurality of outer layers, providing a secure fit to a wireless electronic device and an outer layer providing an easy grip for the user.

An electrical device adapted to operate at a high operating ambient temperature includes an electrical component mounted inside a casing, a transmission/reception antenna and at least one electrical and mechanical connection between the electrical component and the antenna. The electrical and mechanical connection comprises a metal pad positioned under the casing, the antenna being connected to the pad; an electrical connection tab having a first end connected to the electrical component; and fixing means adapted to secure the pad and a second end of the connection tab of the component. The device is applicable to, for example, temperature sensors of the surface guided elastic wave type.

A radio frequency device includes antennas, transmitters, power detectors, a memory storing instructions and an antenna gain lookup table, and processors. The processors execute instructions that include instructing the transmitters to send transmission signals through the antennas to form a first beamformed signal having a first beam direction and a first frequency using multiple input powers. The instructions include determining radio frequency integrated circuit (RFIC) gains associated with the transmitters based on the transmission signals using the power detectors. Moreover, the instructions include determining the antenna gains for the antennas based on the first beam direction and the first frequency of the first beamformed signal, and the antenna gain lookup table. The instructions also include determining total gains based on the RFIC gains and the antenna gains, and adjusting the input powers based on the total gains and a back off power signal.

A tower (1) having equipment (3) mounted thereon is disclosed. The tower (1) has an ice shield assembly (2) for protection to of the equipment (3) against falling ice mounted thereon. The ice shield assembly (2) comprises a tower fixture arrangement (5) being secured to the tower (1) and an ice shield (4) connected 5 to the tower fixture arrangement (5) via a hinge (6). The ice shield (4) is configured for vertically overlapping the horizontal extends of the equipment (3). The ice shield assembly (2) further comprises at least one spring element (7), e.g. in the form of a curved rod, connected at one end to the ice shield (4) and at an opposite end to the tower (1), the at least one spring element (7) 10 being configured to allow the ice shield (4) to pivot relative to the tower (1) at the hinge (6) in order to ensure a gradual transfer of energy from falling ice, which collides with the ice shield (4).

A small cell wireless communication device includes an antenna having an array of radiating elements, a control circuit, and a transceiver/radio. The transceiver is electrically coupled to the antenna by an array of phase shifters, which are responsive to control signals that encode phase weight information and enable the array of phase shifters and the array of radiating elements to collectively perform elevation beamsteering of wireless signals generated by the transceiver, in response to signals generated by the control circuit upon movement of the antenna. In some instances, these signals generated by the control circuit may include an elevation beam index, which may operate as a pointer into a look-up table, which stores phase-weights to be provided to the array of phase shifters.

An antenna device is provided. The antenna device includes a base; an antenna group including a plurality of radiating elements disposed on the base along a first direction; and a feed line configured to feed power to the plurality of radiating elements, the feed line having an air-strip structure, wherein the feed line includes: a plurality of connection line regions configured such that one end is connected to each radiating element of the plurality of radiating elements, and a main line region bent at a predetermined angle at the other end of the connection line region and formed along the first direction from a side surface of the antenna group.