Abstract: An antenna device, a feeding cable module thereof, and a metallic cable holder are provided. The metallic cable holder includes two fixing portions and a cable arrangement portion. The two fixing portions are arranged along a straight direction and are fixed onto a metal plate. The cable arrangement portion is connected between the two fixing portions and includes a plurality of rack segments regularly arranged along the straight direction. Each of the rack segments has an insertion opening, and the insertion opening of each of the rack segments is configured to hold a feeding cable having a cable diameter that is greater than an opening diameter of the insertion opening. When the feeding cable passes through the insertion opening to be positioned by the corresponding rack segment, the feeding cable is surrounded by the corresponding rack segment with a predetermined angle that is smaller than 360 degrees.

Abstract: A wireless device comprises a transceiving circuit, configured to receive a plurality of beam performance parameters corresponding to a plurality beams; a storage circuit, configured to store a table, wherein corresponding relationships between the plurality beams and the plurality of beam performance parameters are tabulated in the table; and a processing circuit, configured to perform the following steps: selecting a first beam according to the table; determining whether a first beam performance value corresponding to the first beam is less than a threshold; and selecting a second beam according to the table when the first beam performance value is less than the threshold.

Abstract: The present invention discloses an antenna selection method, where the antenna selection method includes the steps of: utilizing a first vertical polarized antenna and a second vertical polarized antenna to obtain a first signal; calculating a first signal quality parameter according to the first signal; utilizing the first vertical polarized antenna and a horizontal polarized antenna to obtain a second signal; calculating a second signal quality parameter according to the second signal; and selecting one of the second vertical polarized antenna and the horizontal polarized antenna according to the first signal quality parameter and the second signal quality parameter, to be matched with the first vertical polarized antenna for subsequent signal transmission and reception.

Abstract: An electronic device includes a first radiation element, a second radiation element, a grounding element, and a feeding element. The first radiation element includes a first radiation portion and a feeding portion electrically connected to the first radiation portion. The second radiation element is coupled to the first radiation element and separate from the first radiation element. The grounding element is electrically connected to the second radiation element. The feeding element includes a feeding end and a grounding end. The feeding end is electrically connected to the feeding portion, and the grounding end is electrically connected to the grounding element. An operating frequency band generated by the first radiation element is greater than an operating frequency band generated by the second radiation element.

Abstract: A method for suppressing a change of wireless power includes a parameter setting step, a first power verifying step, a power adjusting step and a second power verifying step. The parameter setting step is performed to set a power parameter set. The first power verifying step is performed to verify whether a first power difference is greater than the power adjustment start difference to generate a first verification result. The power adjusting step is performed to drive a processing unit to adjust the power amplifying unit according to the adjustment parameter set. The second power verifying step is performed to verify whether a second power difference is smaller than or equal to the power adjustment stop difference to generate a second verification result. The processing unit determines whether the power adjusting step is performed according to one of the first verification result and the second verification result.

Abstract: An electronic device and an antenna module are provided. The electronic device includes a metal cover and the antenna module. The metal cover has a short slot and a long slot. The antenna module includes a substrate and an antenna structure. The antenna structure includes a first excitation segment, a second excitation segment, and a connection segment. Two projection regions respectively defined by orthogonally projecting the first excitation segment and the second excitation segment onto the metal cover overlap with the shot slot and the long slot, respectively. When a signal source is fed into the antenna structure, a first frequency band generated by the antenna structure and the short slot, a second frequency band generated by the antenna structure and the long slot, and a third frequency band generated by the antenna structure are different from each other in terms of corresponding frequency ranges.

Abstract: A beam forming device, a calibration method and a calibration system using the same are provided. The beam forming device includes a processor, a memory unit, a baseband circuit, and a plurality of antenna modules. The baseband circuit is electrically connected to the processor and the memory unit. The plurality of antenna modules each include multiple antenna elements, multiple phase shifters and multiple amplifiers corresponding to the multiple antenna elements. The memory unit stores a plurality of reference codebooks and instruction data, the plurality of reference codebooks each have a reference angle and the reference angles are different from each other, and the instruction data is used to specify a predetermined codebook from the plurality of reference codebooks to control multiple antenna modules, thereby enabling multiple antenna modules to transmit and receive signals.

Abstract: A repeater and a synchronization method for the same are provided. The synchronization method includes: configuring a base station to transmit an input signal during downlink transmission durations according to a time division duplex (TDD) configuration, in which the TDD configuration defines a predetermined pattern composed of an uplink transmission duration and a downlink transmission duration; configuring a processor generate a received signal code according to the input signal; configuring the processor to sample the received signal code by using a signal window to generate a target pattern; configuring the processor to dynamically compare the target pattern with the predetermined pattern according to the TDD configuration, positions of the received downlink transmission durations and positions of the received uplink transmission durations stored in a memory of the repeater, and determine whether the target pattern matches to the predetermined pattern.

Abstract: A firmware updating method and a firmware updating system are provided. A host can individually transmit firmware update files to a terminal device, and the host checks by an algorithm whether each of the firmware update files needs to be compressed before each of the firmware update files is transmitted. For the firmware update file that needs to be compressed, the host uses a compression algorithm to reduce a file size of the firmware update file.

Abstract: An antenna structure is provided. The antenna structure includes a first radiation element, a second radiation element, and a feeding element. The first radiation element includes a first radiation portion, a second radiation portion, and a feeding portion. The second radiation element includes a third radiation portion, a fourth radiation portion, and a grounding portion. The third radiation portion and the first radiation portion are separate from each other and coupled to each other, the third radiation portion and the second radiation portion are separate from each other and coupled to each other, and the fourth radiation portion and the first radiation portion are separate from each other and coupled to each other. The feeding element is electrically connected with the feeding portion and the grounding portion. A junction between the feeding element and the feeding portion is defined as a feeding point.

Abstract: A mobile device and an antenna module thereof are provided. The antenna module includes a substrate, a first antenna and a second antenna. The first antenna and the second antenna are disposed on the substrate. The substrate includes a substrate body, a first ground layer and a second ground layer. The first ground layer includes a first slot, the second ground layer includes a second slot, and a vertical projection of the first slot onto substrate body at least partially overlaps with a vertical projection of the second slot onto substrate body. The first slot and the second slot are located between the first antenna and the second antenna, and the first antenna is located closer to the first slot and the second slot than the second antenna.

Abstract: An electronic device and an electromagnetic shielding frame are provided. The electromagnetic shielding frame includes a ring-shaped portion and a plurality of soldering tabs that extend from the ring-shaped portion along a protruding direction. The soldering tabs are spaced apart from each other and are in a ring-shaped arrangement. At least one of the soldering tabs has a patterned slot layout so as to be defined as a patterned tab. A portion of the patterned slot layout of the patterned tab arranged away from the ring-shaped portion has a layout distance. The patterned slot layout is arranged along a first direction and a second direction. The first direction and the protruding direction have a first angle therebetween that is smaller than 90 degrees, and the second direction and the protruding direction have a second angle therebetween that is smaller than 90 degrees.

Abstract: A connection establishing system and method for a mesh network is provided, the mesh network includes a first transceiver and a second transceiver, the method includes performing a secure connection procedure including: transmitting, by the second transceiver, a secure connection request signal including a identifier to the first transceiver. The first transceiver encrypts the authentication message by using a public key corresponding to the identifier to generate a secure connection response signal and transmit the same to the second transceiver, the second transceiver decrypts the secure connection response signal by a private key to generate a decryption message and transmits an association request signal including the decryption message to the first transceiver.

Abstract: A wireless communication method used in a wireless communication device, wherein the wireless communication method includes the steps of: establishing a link with a first access point, and obtaining a backhaul SSID of a self-organizing network including the first access point from the first access point; referring to the backhaul SSID to obtain first access point information of the first access point and second access point information of a second access point within the self-organizing network, wherein each of the first access point information and the second access point information includes a BSSID; and selecting one of the first access point and the second access point to perform a wireless network connection according to the first access point information and the second access point information.

Abstract: A radio-frequency device and a radio-frequency component thereof are provided. The radio-frequency component includes a signal transmission line and a first electrostatic protection module coupled to the signal transmission line. The first electrostatic protection module includes a first wire layer including a first wire coupled to the signal transmission line, a first cell layer disposed corresponding to the first wire layer and including a first conductive body and a plurality of first non-conductive portions, a first grounding layer coupled to the first wire layer and the first cell layer, a first dielectric layer disposed between the first wire layer and the first cell layer, and a second dielectric layer disposed between the first cell layer and the first grounding layer. A vertical projection of the first conductive line on the first dielectric layer at least partially overlaps with that of the first cell layer on the same.

Abstract: A beam forming device, a calibration method and a calibration system using the same are provided. The beam forming device includes a processor, a memory unit, a baseband circuit, and a plurality of antenna modules. The antenna modules each includes multiple antenna elements, and multiple phase shifters and multiple of amplifiers respectively corresponding to the antenna elements. The memory unit stores a reference codebook, a plurality of calibration codebooks and instructing data, each of the plurality of calibration codebooks includes a plurality of records of calibration control data divided by a plurality of target patterns, and a plurality of predetermined phase differences that are different from each other respectively existed between the plurality of calibration codebooks and the reference codebook. The instruction data is used for instructing the beamforming device to use one of the reference codebook and the plurality of calibration codebooks in transmitting and receiving signals.

Abstract: A mobile device including a metal housing, a substrate, a grounding metal element, a first radiation element, a second radiation element, and a switch element is provided. The metal housing includes a body portion and a slot disposed on the body portion. The substrate is disposed on the metal housing. The grounding metal element is disposed on the metal housing and coupled to the metal housing. The switch element is disposed on the substrate, and the switch element is coupled between the second radiation element and the grounding metal element. When the switching element is switched to a first mode, a first radiation pattern is generated by the first radiation element and the second radiation element, when the switching element is switched to a second mode, a second radiation pattern is generated by the first radiation element and the second radiation element.

Abstract: A lens adjustment device includes a base assembly, a lens assembly, a light blocking member and an elastic member. The lens assembly is disposed on the base assembly and is rotatable relative to the base assembly along an axis. The light blocking member is disposed between the base assembly and the lens assembly. The light blocking member is rotatable relative to the lens assembly and the base assembly. The light blocking member is movable along the axis between a first predetermined position and a second predetermined position. The elastic member abuts against the light blocking member to provide an elastic force for moving the light blocking member from the second predetermined position toward the first predetermined position such that the light blocking member abuts against the base assembly.

Abstract: An antenna structure includes a substrate, a first radiating element, a second radiating element, a first inductor, a ground element, a first conducting element and a feeding element. The first radiating element is disposed on the substrate. The second radiating element is disposed on the substrate. The second radiating element includes a feed receiving portion. The first inductor is coupled between the first radiating element and the second radiating element. The first conducting element is coupled between the feed receiving portion and the ground element. The feeding element is coupled between the feed receiving portion and the ground element and for feeding in a signal.

Abstract: A wireless communication system includes a base station, a customer premise equipment (CPE) and a repeater. The repeater includes a down-link circuit and an up-link circuit. The down-link circuit includes a first receiving antenna array and a first transmitting antenna array, and the up-link circuit includes a second receiving antenna array and a second transmitting antenna array. The down-link circuit is separated from the up-link circuit with a first predetermined distance.