Abstract: This application describes multi-band antenna systems and base stations. An example antenna system a frequency selective surface (FSS); at least one radiating element array on a first side of the FSS; and at least one feeding network corresponding to the at least one radiating element array, wherein the at least one feeding network corresponding to the at least one radiating element array is connected to the FSS according to a direct current connection manner or a segmented direct current connection manner, or the at least one feeding network corresponding to the at least one radiating element array is integrated on the FSS.

Abstract: A rapid-click switch includes a button switch, at least one triggering component, an active reset mechanism, and a control module. When the button switch is pressed, the at least one triggering component is switched on and then deactivated to trigger the control module, and the control module controls the active reset mechanism to drive the button switch to rapidly return to an initial position before being pressed.

Abstract: A housing and a foldable electronic device are provided. The housing includes a middle plate, the middle plate includes a first middle plate and a second middle plate that are connected to each other, and materials of the first middle plate and the second middle plate are different. The first middle plate and the second middle plate are mated with each other to form a hinge accommodating region and a non-hinge accommodating region on the middle plate, at least a portion of the first middle plate forms at least a portion of the non-hinge accommodating region, and at least a portion of the second middle plate forms at least a portion of the hinge accommodating region. The middle plate of the housing provided in this application uses a split-type structure and uses different materials, thereby maintaining stable chemical performance when implementing reduction of a body weight.

Abstract: Disclosed in the present invention is a short-range optical potentiometer module, comprising a potential base body provided with a key slot, and a potential key which is mounted inside the key slot and can be displaced up and down, wherein a reset member for resetting the potential key is also arranged inside the key slot, an optical pair transistor composed of a photosensitive element and a light-emitting element is arranged inside the potential key, the optical pair transistor can be displaced up and down along with the potential key, a key base is internally provided with a fixed grating corresponding to the optical pair transistor, the reset member is sleeved on the grating, and the grating is configured such that the flux of light received by the photosensitive element from the light-emitting element changes along with the up-and-down displacement of the potential key, thereby causing an electrical signal generated by the photosensitive element to change along with the displacement of the potential key.

Abstract: An FSS unit includes a radiation assembly, a receiving assembly, and a transmission assembly that are stacked and spaced apart. There is space between the radiation assembly and the receiving assembly. A metal shielding member and a feed network component are located in the space, the metal shielding member is configured to shield at least one of the transmission assembly and the feed network component, and a cavity of the metal shielding member is configured to place the transmission assembly or the feed network component.

Abstract: A heat dissipation device for an underwater equipment is provided. The heat dissipation device includes a heat dissipation shell coaxially arranged around outside of the underwater equipment and a water permeating component. The heat dissipation shell includes a cylindrical shell body. The water permeating component has a conical structure and is provided with multiple first water inlets, and is arranged at two ends of the heat dissipation shell and is connected with the shell body to form a heat dissipation chamber together with the shell body and the housing of the underwater equipment. Through the above structure, heat generated by the underwater equipment can be dissipated through the liquid in the heat dissipation chamber and the heat dissipation shell after the underwater equipment is buried, and thus the heat dissipation efficiency for the underwater equipment buried under the silt in the shallow water area can be improved.

Abstract: A base station antenna is disclosed. The base station antenna includes a feed mechanism and at least one antenna module. Each antenna module includes at least two antenna units, and each antenna unit has a first sub-radiation phase slope. In each antenna module, first sub-radiation phase slopes of the at least two antenna units are different, and each antenna unit is connected to the feed mechanism through a corresponding feeder that is in a one-to-one correspondence with the antenna unit, where the feeder has a second sub-radiation phase slope. The antenna unit and the corresponding feeder form one radiating element, and a radiation phase slope of each radiating element is a sum of the first sub-radiation phase slope of the antenna unit and the second sub-radiation phase slope of the corresponding feeder.

Abstract: This application provides an electronic device. The electronic device includes a light-transmitting cover plate, a display screen, a potting portion, and a support. The light-transmitting cover plate has a first region and a second region, and the first region is disposed around the second region. The display screen is disposed on a side of the light-transmitting cover plate, the display screen includes a display region and a bending region, the display region is attached to the second region, and a vertical projection of the bending region on the light-transmitting cover plate is located in the first region. The potting portion includes the bending region. The support and the potting portion form an annular structure, the annular structure is disposed around the display region, and both the support and the potting portion are fixedly connected to the first region.

Abstract: This application relates to the field of communication technologies, and provides an antenna system, a base station, and a frequency selective architecture. The antenna system may include a frequency selective architecture, a first antenna array, and a second antenna array. The first antenna array operates on a first operating band, and the second antenna array operates on a second operating band. The first antenna array and the second antenna array are disposed opposite to each other in a third direction, and the frequency selective architecture is located between the first antenna array and the second antenna array. The frequency selective architecture includes a frequency selective structure and a shielding shell. The shielding shell is mounted on the frequency selective structure.

Abstract: The present application discloses a data secrecy method for a submarine cable system with a failure and a submarine cable system. The method includes: determining a first disaster tolerance set in response to that a failure occurs to a first branch; and replacing a target optical signal in a first optical signal with a virtual optical signal. The first branch is any branch in the submarine cable system. The first disaster tolerance set includes at least one wavelength used for optical signals for transfer from a first terminal station to the first branch. The first optical signal is an optical signal output from the first terminal station. The target optical signal includes optical signals corresponding to the respective wavelengths in the first disaster tolerance set. The virtual optical signal is an optical signal that does not carry data content.

Abstract: This disclosure provides an antenna system to improve communication flexibility. The antenna system includes a radio frequency unit, a divider, a first modulator, a second modulator, a first antenna and a second antenna. The radio frequency unit is configured to generate a first radio frequency signal. The divider is configured to divide the first radio frequency signal into first and second radio frequency sub-signals. The first modulator is configured to adjust a first electrical downtilt of the first radio frequency sub-signal and send the adjusted first radio frequency sub-signal to the first antenna for transmission. The second modulator is configured to adjust a second electrical downtilt of the second radio frequency sub-signal and send the adjusted second readio frequency sub-signal to the second antenna for transmission. The adjustion is based on a target downtilt of the first radio frequency signal and a mechanical downtilt of the first or second antenna.

Abstract: Systems and methods for LiDAR point cloud processing are disclosed that can include a point cloud data acquisition module configured to receive point cloud data, a spatial smoothing module configured to generate a fitted surface from the point cloud data using a predetermined kernel size, where the fitted surface provides an estimation of locations of points in the point cloud data, a pose adjustment module configured to perform pose adjustment on a LIDAR frame of the point cloud data by calculating an error between points on the fitted surface and corresponding data points in the point cloud data, and adjusting a pose of the LiDAR frame to minimize the error, and a convergence determination module configured to assess a convergence of the pose adjustment by comparing a change in pose adjustment to a threshold value, where if the change exceeds the threshold value, the kernel size is updated.