An antenna array for a liquid crystal display able to function without a phase shifter includes at least two antenna units, each with an antenna module and a controlling circuit. The antenna module is at the side of a first substrate, a grounding layer, a feeding portion, a second substrate, and a liquid crystal layer also being included as a stack. The grounding layer and the feeding portion are on sides of the second substrate. The controlling circuit controls rotation of liquid crystal molecules of the liquid crystal layer therein to change a dielectric constant between the grounding layer and the antenna. The operating frequency of each antenna unit is thereby changed and radiation beam or pattern of the antenna array is thereby adjusted.

A photoacoustic measurement apparatus includes: a main light source; a sub-light source; a light guide member that guides the light which has been emitted from the main light source and the sub-light source and has been incident on a base end to a leading end; an insert of which at least a leading end portion is inserted into a subject and which includes at least the leading end of the light guide member and a light absorption member that absorbs the pulsed laser light, and generates photoacoustic waves; and a photoacoustic wave detection unit that detects the photoacoustic waves. The photoacoustic measurement apparatus has, as an operation mode, a failure detection mode that drives the sub-light source and detects a failure of a photoacoustic wave generation unit including the light guide member and the light absorption member.

An antenna, an antenna control method, and a terminal, where the antenna includes an antenna body and an antenna branch, where one end of the antenna branch is coupled to the antenna body, the other end is coupled to a feedpoint of a primary radio frequency channel, and the end of the antenna branch that is coupled to the feedpoint of the primary radio frequency channel is further coupled to the antenna body through a first adjustable device, where the first adjustable device is in an on state or an off state. An antenna branch is coupled between the feedpoint of the primary radio frequency channel and the antenna body, and the antenna branch is capable of coupling or decoupling by switching on or off the first adjustable device.

A smart packaging system and a smart display system and methods relating thereto are disclosed herein. In various embodiments, the packaging system may include an inner package, an outer package, and an identification tag disposed between said inner package and said outer package. Said identification tag may be a radio-frequency identification (RFID) tag, a near-field communication (NFC) identification tag, or any variation thereof. In various embodiments, the display system may include a display shelf for positively positioning a plurality of product packages, at least one near-field communication antenna, and a control system. Each of said plurality of product packages may include said identification tag. Said control system may transmit and receive product information data to and from said identification tag for each of said plurality of product packages.

The present disclosure relates to a three-dimensional-layout high gain radio-frequency front end apparatus, including an antenna device and a radio-frequency transceiver device. The antenna device includes two or more antenna array layers arranged in layers. The radio-frequency transceiver device includes a filter, a circulator, a receiver and a transmitter. The antenna array layer is connected to a filter. The filter is connected to a circulator by an optical fiber, and the circulator is connected to a receiver and a transmitter respectively by an optical fiber.

An NFC watch includes a metal shell, a support and an NFC antenna arranged at the top of the support, wherein the support is mounted at the bottom of the metal shell, and the NFC antenna is clamped between the metal shell and the support and exposed to the outside. The NFC watch further includes a PCB arranged in the support and electrically connected with the NFC antenna and a power supply arranged at the bottom of the support and used for supplying power to the PCB. The NFC watch is simple in structure and high in practicability.

An antenna, an antenna control method, and a terminal, where the antenna includes an antenna body and an antenna branch, where one end of the antenna branch is coupled to the antenna body, the other end is coupled to a feedpoint of a primary radio frequency channel, and the end of the antenna branch that is coupled to the feedpoint of the primary radio frequency channel is further coupled to the antenna body through a first adjustable device, where the first adjustable device is in an on state or an off state. An antenna branch is coupled between the feedpoint of the primary radio frequency channel and the antenna body, and the antenna branch is capable of coupling or decoupling by switching on or off the first adjustable device.

A universal rack architecture management system provides a single point of administration and management through use of a novel universal management appliance. The universal management appliance enables communication between it and at least one serial console device. The universal management appliance also allows for remote control of: a server, a storage array module, a multi-interface module, a firewall, an uninterruptable power supply, a power distribution unit, a computer, a serial console device, and other manageable devices. The universal management appliance also manages an IPMI capable server, including iDRAC, iLO IMM, and ILOM. The universal management appliance monitors and receives real-time telemetry. The universal management appliance uses standard network, IPMI, USB, or Serial (DB9) interfaces. The universal management appliance automatically sends real-time predictive and actual failure notifications and alerts. The universal management appliance operates on an independent base operating system. The system consumes minimal amounts of electricity and generates nominal BTU/heat.

A universal rack architecture management system provides a single point of administration and management through use of a novel universal management appliance. The universal management appliance enables communication between it and at least one serial console device. The universal management appliance also allows for remote control of: a server, a storage array module, a multi-interface module, a firewall, an uninterruptable power supply, a power distribution unit, a computer, a serial console device, and other manageable devices. The universal management appliance also manages an IPMI capable server, including iDRAC, iLO IMM, and ILOM. The universal management appliance monitors and receives real-time telemetry. The universal management appliance uses standard network, IPMI, USB, or Serial (DB9) interfaces. The universal management appliance automatically sends real-time predictive and actual failure notifications and alerts. The universal management appliance operates on an independent base operating system. The system consumes minimal amounts of electricity and generates nominal BTU/heat.

Antennas for wearable wireless devices are provided. A wearable wireless device antenna may include a primary radiating element configured to form at least a portion of a wearable device body and a secondary radiating element configured to couple to the primary radiating element. Each of the primary and secondary radiating elements may be configured to radiate in differing frequency ranges. Wearable device antennas as provided may further be configured as directional antennas.