Abstract: This application provides an antenna unit and an electronic device. A signal at a C-mode port and a signal at a D-mode port of a same loop antenna in any antenna unit are respectively excited by using two feeds, and the antenna unit is electrically symmetrically disposed, so that the signal at the C-mode port is self-cancelled at the D-mode port, and the signal at the D-mode port is self-cancelled at the C-mode port, to implement signal isolation between the two ports and interference self-cancel, and the signal at the C-mode port and the signal at the D-mode port can be complementary to each other in different radiation directions, to implement two antennas with high isolation and a low envelope correlation coefficient ECC based on the same loop antenna.

Abstract: An antenna includes a grounding plate; a first electric dipole; a first feeding unit, where the first feeding unit includes a first coupling structure coupled to the first electric dipole, and the first feeding unit performs coupled feeding on the first electric dipole through the first coupling structure; a second electric dipole, where the second electric dipole is disposed between the first electric dipole and the grounding plate; a second feeding unit, where the second feeding unit includes a second coupling structure coupled to the second electric dipole, and the second feeding unit performs coupled feeding on the second electric dipole through the second coupling structure; and a magnetic dipole, where the magnetic dipole is electrically connected to the grounding plate, the first electric dipole, and the second electric dipole.

Abstract: An temperature control method including the following steps: driving an temperature control device to generate air circulation for a first server and a second server; monitoring operation state of the temperature control device, the first server and the second server continuously to establish a first learning model; receiving an temperature control state data of the temperature control device, a first state data of the first server, and a second state data of the second server, wherein the first state data includes a first temperature, and the second state data includes a second temperature; inputting the temperature control state data, the first state data, and the second state data into the first learning model to obtain a first temperature prediction value output by the first learning model; and adjusting the temperature control device according to the first temperature prediction value.

Abstract: An antenna-in-module includes a ground plate, three radiating elements, and two feed stubs. A first radiating element and a ground plate are arranged at an interval along a Z-axis and are disposed opposite to each other. The first radiating element and a second radiating element are arranged at an interval along an X-axis. A first gap between the first radiating element and the second radiating element extends along a Y-axis. A third radiating element and the second radiating element are arranged at an interval along the Z-axis and are disposed opposite to each other. At least a part of a first feed stub is disposed in a first aperture that includes space between the first gap and the ground plate. At least a part of a second feed stub is disposed in a second aperture that includes space between the second radiating element and the third radiating element.

Abstract: A heat flow control method, for a data center cooling system, includes determining a plurality of features corresponding to a current scene of the data center cooling system at a first time point; and determining a plurality of cooling parameters at a second time point according to the plurality of features; wherein the data center cooling system utilizes the plurality of cooling parameters to control heat flow at the second time point; wherein the second time point lags the first time point.

Abstract: A fan efficiency control method, for a server, wherein the server comprises a plurality of fans and at least one sensor, the fan efficiency control method includes determining a plurality of system parameters of the plurality of fans of the server; obtaining a current temperature through the at least one sensor, and obtaining a temperature parameter corresponding to a main heat source of the server according to the current temperature; obtaining a modulation function; calculating a speed weight of each fan of the plurality of fans according to the plurality of system parameters, the modulation function and the temperature parameter; and adjusting a speed of one of the plurality of fans according to the speed weight.

Abstract: A cover includes a cover body and a first line layer. The cover body is made of an insulating material, and the first line layer is made of a conductive material. The first line layer is completely built into the cover body, and the first line layer is configured to form a radiator, and is coupled to a radio frequency transceiver circuit of an electronic device. The first line layer includes a plurality of first conducting wires and a plurality of second conducting wires. The plurality of first conducting wires are arranged at intervals in a first direction, and the plurality of second conducting wires are arranged at intervals in a second direction. The plurality of first conducting wires and the plurality of second conducting wires are disposed intersecting each other. The first direction is different from the second direction.

Abstract: An impeller for a diagonal fan includes a hub, a cylindrical part, a conical section shell, a plurality of blades and a plurality of extended blades. The cylindrical part is connected to the hub and extends axially from a lower end of the hub. The conical section shell surrounds the hub. The blades are connected to the hub and an inner surface of the conical section shell. The extended blades are disposed on an outer surface of the conical section shell and project from the outer surface of the conical section shell.

Abstract: An antenna design solution is provided. A metal frame and a PCB ground layer of an electronic device are used to form a slot. Through symmetric feeding and anti-symmetric feeding, the slot can be excited to generate two slot antenna patterns: a CM slot antenna pattern and a DM slot antenna pattern. In addition, the two slot antenna patterns share a same slot antenna radiator.

Abstract: An electronic device includes a decoupling member, a first radiator, a second radiator, a first feed unit, a second feed unit, and a rear cover. A gap is formed between the first radiator and the second radiator, the decoupling member is indirectly coupled to the first radiator and the second radiator, and the decoupling member is disposed on a surface of the rear cover. The decoupling member does not overlap a first projection, and the first projection is a projection of the first radiator in a first direction. The decoupling member does not overlap a second projection, and the second projection is a projection of the second radiator in the first direction. The first direction is a direction perpendicular to a plane on which the rear cover is located.

Abstract: A diagonal fan is disclosed and includes a frame and an impeller. The frame includes an inlet, an outlet, an accommodation space and a guiding wall. The inlet and the outlet are communicated through the accommodation space. The guiding wall is extended along an axial direction to the accommodation space. The impeller is accommodated within the accommodation space and includes a conical section shell. When the impeller is rotated, an airflow flowing is generated. The outer diameter of the hub of the impeller is expended gradually in a direction from the inlet toward the outlet, so that the flowing direction of the airflow is expended gradually around the peripheral of the impeller. A gap having a spacing distance is substantially maintained to form a backflow channel. A backflow is transported through an intake section, a horizontal section and an exhaust section of the backflow channel, and converged with the airflow.

Abstract: A diagonal fan is disclosed and includes a frame and an impeller. The frame includes an inlet, an outlet, and an accommodation space. The inlet and the outlet are communicated through the accommodation space. The impeller is accommodated within the accommodation space and includes a hub, a cylindrical part, a conical section shell and a plurality of blades, wherein the cylindrical part is configured to accommodate a rotor. The cylindrical part includes a plurality of protrusion portions and a plurality of indentation portions disposed on an inner surface thereof, and the plurality of protrusion portions are abutted against an outer surface of a magnetic shell of the rotor.

Abstract: Embodiments of this application provide an electronic device, including a first decoupling member, a first radiator, a second radiator, a first feed unit, a second feed unit, and a rear cover. A first gap is formed between the first radiator and the second radiator. The first radiator includes a first feed point. The second radiator includes a second feed point. The first decoupling member is indirectly coupled to the first radiator and the second radiator, and the first decoupling member is disposed on a surface of the rear cover.

Abstract: An electronic device includes a radiator, a first feed circuit, and a second feed circuit. The radiator includes a first branch. The first feed circuit feeds the radiator at a first end of the first branch, and the second feed circuit feeds the radiator at a first position in the first branch. The first position is in an area with a largest current in the first branch when the first feed circuit performs feeding and the second feed circuit does not perform feeding.

Abstract: An electronic device includes a conductive frame and a first antenna unit. The conductive frame is disposed around a periphery of the electronic device. The first antenna unit includes a first conductive layer and a second conductive layer spaced apart in a thickness direction of the electronic device; a conductive connection portion is configured to connect the first conductive layer and the second conductive layer; and a first conductive frame, is a part of the conductive frame. The conductive connection portion, the first conductive frame, the first conductive layer, and the second conductive layer enclose a first cavity, and the first conductive layer and the first conductive frame are spaced apart to form a first slot of the first cavity.

Abstract: A display stack with millimeter-wave antenna functionality comprising a plurality of adjoining layers, the layers comprising at least a cover layer, a touch sensor panel layer comprising a touch sensor arrangement, and a display panel layer. The touch sensor panel layer comprises a first sensor line grid pattern and a second sensor line grid pattern, the first sensor line grid pattern comprising a plurality of continuous first sensor lines, the second sensor line grid pattern comprising a plurality of continuous second sensor lines. At least a part of the first sensor lines and the second sensor lines are configured to function as radiators for the millimeter wave antenna functionality. This allows providing the millimeter wave antenna in the touch sensor panel structure without the antenna and the touch sensor panel interfering with each other.

Abstract: A broadside antenna includes a first radiation element and a second radiation element arranged at an interval, a first grounding element and a second grounding element arranged at an interval, and a first excitation element. A first gap is formed between the first radiation element and the second radiation element. The first excitation element includes a first feeding structure and a first extension stub that are arranged at an interval. The first feeding structure includes a first feed-in part connected to a feed source. The first extension stub is located on a side of the first feeding structure adjacent close to the first feed-in part. The first extension stub includes a first grounding part adjacent to the first feed-in part. The first grounding part is connected to the grounding surface.