Abstract: A codebook generation method and an electronic apparatus are provided. The codebook generation method includes: collecting a plurality of pieces of electric field information of a plurality of antenna units in at least one millimeter-wave antenna module based on an initial codebook; correspondingly generating a full chain codebook (Full Chain Codebook) based on the electric field information; then, extendedly generating a sub chain codebook (Sub Chain Codebook) based on the full chain codebook; and finally generating, based on the full chain codebook and the sub chain codebook, an optimized codebook (Optimized Codebook) by using a power saving algorithm or a cumulative distribution function 50% gain loss algorithm. Therefore, the electronic apparatus using the optimized codebook is more excellent in power saving efficiency and overall efficiency performance.

Abstract: The present invention provides a rear-door heat dissipation system with a horizontally arranged and series-connected design comprising a heat dissipation cabinet, at least one condenser unit, and a heat dissipation device. The heat dissipation cabinet is provided therein with an active heat source device and a cabinet back door on one side of the heat dissipation cabinet, wherein the cabinet back door is provided with an air circulation unit. The condenser unit is provided on the cabinet back door, comprising a plurality of condensers. Wherein the circulation tube system of each of the condensers comprises a first and second main-channel aluminum tube, and aluminum flat tubes. Each aluminum flat tube has two ends respectively connecting to the first and second main-channel aluminum tube. An airflow channel is formed between each two adjacent aluminum flat tubes to enable air circulation, and each airflow channel is provided with an aluminum fin.

Abstract: The present invention provides a circuitry including a regulator and a control circuit is disclosed. The regulator is configured to receive an input signal to generate an output voltage. The control circuit is configured to select one of a first reference voltage and a second reference voltage to serve as an output reference voltage according to an output signal of the regulator, and generate a control signal according to the output reference voltage to control a voltage level of the output voltage of the regulator.

Abstract: The present invention provides an immersion heat exchange system comprising cooling equipment and heat exchange equipment connected to the cooling equipment. The cooling equipment comprises a primary container and at least one cooling tank provided in the primary container. The cooling tank holds a cooling liquid for an active heat source device to be immersed in the cooling liquid. The heat exchange equipment comprises a secondary container and at least one heat exchange tank provided in the secondary container. The heat exchange tank provided therein with at least one condenser. The condenser divides the heat exchange tank into an input portion and an output portion. There is at least one circulation device corresponding to and working with the input portion and/or the output portion of the heat exchange tank to make the cooling liquid exchanged and circulated between the cooling tank and the heat exchange tank.

Abstract: A heat exchanger module for immersion cooling system includes cooling equipment and heat exchange equipment connected to the cooling equipment. The cooling equipment includes a primary container and at least one cooling tank provided in the primary container. The cooling tank holds a cooling liquid for an active heat source device to be immersed in the cooling liquid. The heat exchange equipment includes a secondary container and at least one heat exchange tank provided in the secondary container. The heat exchange tank is provided therein with at least one condenser. The condenser divides the heat exchange tank into an input portion and an output portion. There is at least one circulation device corresponding to and working with the input portion and/or the output portion of the heat exchange tank to make the cooling liquid exchanged and circulated between the cooling tank and the heat exchange tank.

Abstract: A heat dissipation device for a multipoint heat source includes an evaporator unit and a condenser unit. The evaporator unit includes a multi-channel duct. At least one narrow side of the multi-channel duct has a communication opening in communication with the bottom side of at least one tube of the condenser unit, and a wide side of the multi-channel duct is attached to the multipoint heat source so that a heat conduction medium can be circulated through the evaporator unit and the condenser unit while alternating between a liquid phase and a gaseous phase.

Abstract: A wideband antenna system includes a first metal radiation portion, having a coupling distance with a second metal radiation portion; a first feeding contact and a second feeding contact, electrically connected to the first metal radiation portion and the second metal radiation portion respectively, and close to the coupling distance; a first ground contact, electrically connected to the second metal radiation portion; a second ground contact, electrically connected to the first metal radiation portion; an impedance tuner, electrically connected to the first feeding contact, the second feeding contact, the first ground contact, the second ground contact, and a radio frequency signal source, to switch the first metal radiation portion and the second metal radiation portion; an aperture contact, electrically connected to the first metal radiation portion; and an aperture tuner, electrically connected to the aperture contact.

Abstract: An electronic device having multiple antennas and an antenna configuration method are provided. The antenna configuration method includes: controlling a communication module of an electronic device to electrically connect to a main antenna of the electronic device; determining whether an operating state of the electronic device conforms to a preset usage situation; and controlling the communication module to electrically connect to an auxiliary antenna of the electronic device when the operating state conforms to the preset usage situation, so that the communication module transmits and receives the radio frequency signal by the auxiliary antenna.

Abstract: An electronic device having multiple antennas and an antenna configuration method are provided. The antenna configuration method includes: controlling a communication module of an electronic device to electrically connect to a main antenna of the electronic device; determining whether an operating state of the electronic device conforms to a preset usage situation; and controlling the communication module to electrically connect to an auxiliary antenna of the electronic device when the operating state conforms to the preset usage situation, so that the communication module transmits and receives the radio frequency signal by the auxiliary antenna.

Abstract: A portable electronic device including a front cover, a back cover and a circuit board is provided. The circuit board is located between the front cover and the back cover. The back cover is combined with the front cover and includes a back section, a plurality of side sections and a separator, at least one of the side sections adjacent to the back cover includes a groove close to the back section and a slot far away from the back section, the slot is connected through to the groove, a first antenna unit and a second antenna unit are defined at the side section by the groove and the slot. The separator is located in the groove and the slot.

Abstract: A portable electronic device including a front cover, a back cover and a circuit board is provided. The circuit board is located between the front cover and the back cover. The back cover is combined with the front cover and includes a back section, a plurality of side sections and a separator, at least one of the side sections adjacent to the back cover includes a groove close to the back section and a slot far away from the back section, the slot is connected through to the groove, a first antenna unit and a second antenna unit are defined at the side section by the groove and the slot. The separator is located in the groove and the slot.

Abstract: An electronic device includes a conducting element, a supporting element, and a multiband antenna is disclosed. The conducting element is connected to the ground of the electronic device by a high impedance connection. The supporting element has a supporting surface, and the supporting surface and the conducting element are perpendicular. The multiband antenna is disposed at the supporting surface and includes a radiating element, and the radiating element and the conducting element form a coupling capacitor.

Abstract: An electronic device includes a conducting element, a supporting element, and a multiband antenna is disclosed. The conducting element is connected to the ground of the electronic device by a high impedance connection. The supporting element has a supporting surface, and the supporting surface and the conducting element are perpendicular. The multiband antenna is disposed at the supporting surface and includes a radiating element, and the radiating element and the conducting element form a coupling capacitor.