Abstract: A multi-input multi-output antenna system capable of being disposed in an electronic device and the electronic device including the antenna system have a low-frequency antenna assembly and a high-frequency antenna assembly. The low-frequency antenna assembly includes multiple low-frequency antennas that are spaced apart from each other by a distance. The high-frequency antenna assembly includes multiple high-frequency antennas that are spaced apart from each other by a distance. One of the high-frequency antennas is structured as a low-profile dish antenna and is located between the low-frequency antennas, so that the antenna system has smaller volume and height, and better isolation and radiation patterns.

Abstract: A routing information management method adapted for a layer-3 switch is proposed. For each ARP entry in an ARP table, a processor assigns to the ARP entry an aging reference parameter that is identical to a quantity of those routing entries in an IP routing table whose next hop IP addresses are identical to the IP address of the ARP entry, and removes those ARP entries whose aging reference parameters are zero. For each routing entry in the IP routing table, when the next hop IP address of the routing entry is absent from the ARP table, the processor makes the routing entry serve as an inactive routing entry, proactively sends an ARP request for the inactive routing entry, and updates the ARP table based on a piece of ARP information received externally.

Abstract: A mounting seat is connected to a doorbell includes a mounting portion, an extendable portion, and a connecting portion. The mounting portion is connected to a mounting surface. The extendable portion is connected to the mounting portion. The extendable portion could be extended or retracted by exerting force. The extendable portion includes a first extendable section and a second extendable section. The connecting portion is connected between the extendable portion and the doorbell. When the first extendable section is extended or retracted relative to the mounting portion, the extendable portion drives the connecting portion and the doorbell to turn along a first axis. When the second extendable section is extended or retracted relative to the mounting portion, the extendable portion drives the connecting portion and the doorbell to turn along a second axis. The first axis is not parallel to the second axis.

Abstract: A vehicle radar system includes an antenna module, an RF module, and a signal processor. The antenna module includes at least one transmitting antenna and multiple receiving antennas. The RF module includes a transmitting segment that generates and transmits transmitting waves each carrying a transmitting signal, and a receiving segment that receives reflected waves and incorporates received signal carried by the reflected waves with the transmitting signal into a beat signal. The signal processor performs 2D-FFT on the beat signals to obtain estimated position information of the target object, determines whether a distance value of the estimated position information is greater than a preset distance threshold, and when it is determined that the distance value is greater than the preset distance threshold, perform two-dimensional Multiple Signal Classification (2D-MUSIC) on the estimated position information, so as to obtain an exact distance value and an exact angle value of the target object.

Abstract: A method for automatically measuring a handover performance in a multi-cell environment includes: by a base station device, transmitting a radio frequency (RF) signal; rotating by one full rotation; receiving a first measurement dataset from a user equipment (UE); obtaining a first trigger value and a second trigger value based on the first measurement dataset, and calculating a third trigger value based on the second trigger value and a preset third event offset value; transmitting a plurality of RF signals; rotating by a preset angle with a preset angular velocity; receiving a second measurement dataset from the UE; transmitting a command to the UE to perform a handover process; and measuring a plurality of results associated with the handover process. The results include a handover time during which the handover process is implemented and completed, and a success rate of the handover process.

Abstract: A target detection method includes generate a frequency modulated continuous wave (FMCW) signal; send the FMCW signal through a radar module; receive a first echo signal and a second echo signal reflected by a target and respectively corresponding to a first output signal and a second output signal; process the first echo signal and the second echo signal to correspondingly obtain a first time domain signal S(t1) and a second time domain signal S(t2); process the first time domain signal S(t1) and the second time domain signal S(t2) to obtain a differential time domain signal ?S(t) which satisfies ?S(t)=S(t2)-S(t1); convert the differential time domain signal ?S(t) into an intermediate frequency (IF) signal through Fast Fourier Transform (FFT); calculate a relative distance or a relative velocity of the target relative to the radar module based on the IF signal.

Abstract: A microstrip antenna includes a substrate, a feedline, an impedance matching structure, and a patch radiator, wherein the substrate has a surface. The feedline is disposed on the surface and extends along a first axial direction. The impedance matching structure is disposed on the surface and has a first end and a second end in the first axial direction, wherein the first end is connected to the feedline. The impedance matching structure has a stepped impedance change. The patch radiator is disposed on the surface, wherein the patch radiator and the second end of the impedance matching structure are adjacent and spaced by a distance in the first axial direction, and the second end of the impedance matching structure is coupled with the patch radiator through the distance. Therefore, a bandwidth of the microstrip antenna could be increased.

Abstract: A multiband antenna includes a first radiator, a feed element, a first ground element, a second radiator, a connecting element, and a second ground element, wherein the first radiator is made of a metal plate. The feed element is electrically connected to the first radiator and is adapted to feed a signal. The first ground element is electrically connected to the first radiator. The second radiator is made of a metal plate and surrounds an outer side of the first radiator, wherein the first radiator and the second radiator are spaced by an interval. The connecting element is electrically connected to the first radiator and the second radiator. The second ground element is electrically connected to the second radiator. In this way, the multiband antenna is suitable for transmitting signals in multiple frequency bands.

Abstract: An image-capturing device includes a camera and a rotating mechanism for orienting the camera in multiple directions. The rotating mechanism includes a motor; a driving gear; a first transmission module including a first input gear, which is selectively engaged with and transmitted to rotate by the driving gear at a first position, and transmitting the camera to rotate in a first direction with rotation of the first input gear; a second transmission module including a second input gear, which is selectively engaged with and transmitted to rotate by the driving gear at a second position, and transmitting the camera to rotate in a second direction with rotation of the second input gear; and a clutch mechanism including a clutch device for driving the driving gear to switch between the first position and the second position. The clutch device includes a solenoid.

Abstract: A multi-input multi-output (MIMO) antenna system includes a metal plate, a background scanning antenna, a plurality of working antennas, and an isolator module. The isolator module is mountable on the metal plate and includes a plurality of isolators that are in a ring configuration to form an isolated space therein, so that the background scanning antenna can be located in the isolated space and a plurality of working antennas are located outside of the isolated space, thereby ensuring good isolation of the background scanning antenna from the working antennas by the design of the isolator module.

Abstract: An electronic device having an aluminum or copper foil heat dissipator includes a casing, an electronic structure disposed in the casing, and an aluminum or copper foil heat dissipator. A surface of the electronic structure has a heat source element. The aluminum or copper foil heat dissipator is a 3D aluminum or copper foil structure formed by stamping and includes a bottom, a surrounding portion, and a 3D space formed between the bottom and the surrounding portion. The bottom is thermal conductively coupled to the heat source element. A surface of the aluminum or copper foil heat dissipator is partially/entirely thermal conductively coupled to an inner surface of the casing. With the characteristics of aluminum or copper foil that is easy to expand into a 3D shape during processing and could closely fit the inner surface, the heat generated by the heat source element could be dissipated from the 3D aluminum or copper foil with a large contact area, achieving better heat dissipation effect.

Abstract: A floating electrical connector includes a housing with a tubular portion. An axis is defined in a center of the tubular portion. Several floating terminals are arranged around the axis and are partially connected. Each floating terminal has an inner terminal sheet on an inner side and a spring structure on an outer side. Each spring structure is connected to one of the inner terminal sheets. A portion of the inner terminal sheet is inserted into the tubular portion and arranged along an inner peripheral surface of the tubular portion. The portion of each inner terminal sheet located in the tubular portion has an electronic contact bulging inward. Several external pins are electrically connected around the floating terminals. When a conductive pin is inserted into the tubular portion, the spring structures could elastically deform, allowing the tubular portion to adapt to a horizontal deviation or a skew deviation of the conductive pin, providing a greater tolerance for alignment deviations.

Abstract: A thermal module for being disposed in an electronic device comprises a driving device and at least one thermal device. The driving device includes a driving member and a driven member which are connected together, wherein the driving member is adapted to drive the driven member to operate. The at least one thermal device includes a fan, wherein two opposite ends of the fan respectively have a mating portion and a connecting portion. The mating portion is adapted to be connected to the driven member, so that the driving member drives the driven member to drive the fan to rotate. The connecting portion of the fan is adapted to be connected to the mating portion of a fan of another thermal device, so that when the driving member drives the fan to rotate, the fan drives the fan of the another thermal device to rotate.

Abstract: A periodic metal array structure can be disposed between two antenna modules and include rows of metal unit assemblies that each includes metal units connected to each other in a longitudinal direction. Each metal unit has a first longitudinal strip, two first transverse strips, two second transverse strips, and two second longitudinal strips having shorter longitudinal lengths than that of the first longitudinal strip, and being respectively disposed on the left and right sides of the first longitudinal strip and respectively spaced apart therefrom by intervals at which the second transverse strips are located. The top and bottom ends of the first longitudinal strip are respectively connected with the first transverse strips. At least one first transverse strip can be connected to a first transverse strip of an adjacent metal unit. Each second transverse strip can be connected to the first longitudinal strip and a corresponding second longitudinal strip.

Abstract: A heat dissipation structure and an electronic apparatus having the heat dissipation structure are provided. The electronic apparatus includes a printed circuit board, a high thermal-resisting housing, a thermal pad and a metal bracket. Heat is transferred between the thermal pad and an electronic component mounted on the printed circuit board. The high thermal-resisting housing defines an inner space for accommodating the printed circuit board. A columnar space is formed in the high thermal-resisting housing, and a metal layer is arranged outside the columnar space. The thermal conductivity of the high thermal-resisting housing is not greater than 1 W/m·K. The metal bracket and the printed circuit board are disposed at two opposite sides of the high thermal-resisting housing, respectively. A fastening member penetrates through the metal bracket and is inserted into the columnar space to urge the metal bracket to be in contact with the metal layer.

Abstract: A power switching circuitry and ethernet apparatus using the same is provided. The power switching circuitry comprises an external power socket for receiving external power, an ethernet power supply pin for receiving power over ethernet, a sensing circuitry, and a power output decision module, and determines whether the power over ethernet is applied to an internal circuit in accordance with position variations of the socket pins of the external power socket.

Abstract: An airflow detection device for detecting whether an air output path is obstructed can be mounted in the air output path and includes a carrying portion, a metallic sensing portion and a metallic air plate portion that are respectively positioned on the carrying portion and have different electrode polarities, so as to detect obstruction of the air output path. The airflow detection device can be applied to products located in remote areas, mountain areas, or other places where maintenance workers cannot inspect the products frequently for the state of their dust screens or ventilation holes, and can help warn of conditions such as ventilation hole obstruction to avoid product overheating due to dust or dirt accumulation on dust screens or ventilation hole obstruction, adverse impacts on product performance, service live or stability, or system crash.

Abstract: A method for uplink communication to be executed by a RAN includes: for each of UEs, establishing connection with one of RUs; host device conducting data transmission with each UE in multiple phase delays through controlling the beamforming antenna of the UE via the RU that is connected to the UE, and calculating an error rate with respect to each of the phase delays; the host device finding one of the phase delays that has the lowest error rate and setting a configuration of beamforming antenna of the UE with the phase delay that has the lowest error rate, such that the UE and the RU connected thereto form a spatially isolated relationship; and within the spatially isolated relationship, the RU receiving uplink data from the UE and transmitting the uplink data to the host device.

Abstract: A mounting seat is connected to a doorbell includes a mounting portion, an extendable portion, and a connecting portion. The mounting portion is connected to a mounting surface. The extendable portion is connected to the mounting portion. The extendable portion could be extended or retracted by exerting force. The extendable portion includes a first extendable section and a second extendable section. The connecting portion is connected between the extendable portion and the doorbell. When the first extendable section is extended or retracted relative to the mounting portion, the extendable portion drives the connecting portion and the doorbell to turn along a first axis. When the second extendable section is extended or retracted relative to the mounting portion, the extendable portion drives the connecting portion and the doorbell to turn along a second axis. The first axis is not parallel to the second axis.

Abstract: A network switch displays a state signal of network connection ports by a combination of LEDs and includes a signal management unit, a control unit, switch members, and the LEDs. The signal management unit receives the state signal from the network connection ports and transmits data to the control unit to control each of the switch members and correspondingly output to control each of the LEDs. The state signal includes that a first state data outputs an active/inactive state via a first control signal, a second state data and a third state data output a link-down/up state and a connection speed state via a second control signal, so that the LEDs displays different states of the network connection ports based on a combination of each of the first control signal and each of the second control signal.