Abstract: A lighting apparatus includes a lamp body, a lamp cover, and a hinge structure formed as an extruded polymer member that connects the lamp body to the lamp cover. The hinge structure has a first fixing portion, a second fixing portion, and a connecting section. The first fixing portion is secured to the lamp body, and the second fixing portion is secured to one side of the lamp cover. The lamp cover rotates relative to the lamp body along the hinge structure. When the lamp body is installed on a ceiling or wall, the lamp cover hangs downward for user access during setup and is then rotated upward to close and seal with the lamp body.

Abstract: Disclosed is a double-capped micromolecule electron donor material, its preparation and application. The micromolecule electron donor material comprises a molecular structure as shown in formula (I). The double-capped micromolecule electron donor material of the application has good solubility, stability, photoelectric property and solution processability, and may be used as an electron donor material for all-micromolecule organic solar cells.

Abstract: A four-port RF hybrid coupler includes a substrate having first and second primary traces and first and second coupled traces on a first surface thereof. The first coupled trace has: (i) a first end configured to provide a first degree of RF coupling to a first end of the first primary trace when the RF hybrid coupler is active, and (ii) a second end configured to provide a third degree of RF coupling to a second end of the second primary trace when the RF hybrid coupler is active. The second coupled trace has: (i) a first end configured to provide a fourth degree of RF coupling to the first end of the second primary trace when the RF hybrid coupler is active, and (ii) a second end configured to provide a second degree of RF coupling to the second end of the first primary trace when the RF hybrid coupler is active. First and second energy cancellation circuits are also provided.

Abstract: A coupler for a communication system, including: a first conductive trace including a first coupling section; a second conductive trace including a second coupling section configured to be adjacent to and spaced from the first coupling section to be galvanically isolated from and coupled to the first coupling section; and a first intermediate conductor provided between and spaced from the first coupling section and the second coupling section to be galvanically isolated from and coupled to both the first coupling section and the second coupling section, where an edge of the first coupling section adjacent to the second coupling section has a first recess, and the first intermediate conductor is provided at the first recess.

Abstract: Provided is a solar cell. The solar cell includes a silicon substrate, a P-type doping structure located on the back surface of the silicon substrate, an N-type doping structure located on the back surface of the silicon substrate, a spacing region located between the P-type doping structure and the N-type doping structure, a first electrode located on a back surface of the P-type doping structure, and a second electrode located on a back surface of the N-type doping structure. In a first direction, the back surface of the P-type doping structure is higher than the back surface of the N-type doping structure, and the first direction is from a front surface of the silicon substrate to the back surface of the silicon substrate. With the solar cell of the present disclosure, more carriers can be generated and successfully collected, improving a cell efficiency.

Abstract: Provided are a solar cell and a method for preparing the solar cell. The solar cell includes a silicon substrate having a front surface and a back surface. The silicon substrate includes a P-type region located on the back surface, an N-type region located on the back surface; and an isolation region located between the P-type region and the N-type region. The solar cell further includes a first electrode disposed in the P-type region, a second electrode disposed in the N-type region, and an electrical connector disposed in the isolation region and configured to electrically connect a part of the P-type region and a part of the N-type region.

Abstract: A lighting apparatus includes a driver housing, and first and second light wings each coupled to two sides of the driver housing. Each light wing includes a lens plate, an LED module for emitting light through the lens plate and out a light opening, a lens entrance for receiving the lens into the light wing, and a lens cover for concealing the lens entrance. The first and second light wings are adjustable with respect to the driver housing.

Abstract: A sound absorption apparatus includes a sound absorption unit. The sound absorption unit includes: a connection member including a first connection surface and a second connection surface arranged opposite to the first connection surface, the first connection surface and the second connection surface being parallel to a flow direction of a cooling air flow, and the cooling air flow being an air flow flowing through the sound absorption unit; and a plurality of sound absorption members each being permeable and including: a third connection surface configured to connect to one of the first connection surface and the second connection surface; and a sound absorption surface surrounding the one of the first connection surface and the second connection surface.

Abstract: A four-port RF hybrid coupler includes a substrate having first and second primary traces and first and second coupled traces on a first surface thereof. The first coupled trace has: (i) a first end configured to provide a first degree of RF coupling to a first end of the first primary trace when the RF hybrid coupler is active, and (ii) a second end configured to provide a third degree of RF coupling to a second end of the second primary trace when the RF hybrid coupler is active. The second coupled trace has: (i) a first end configured to provide a fourth degree of RF coupling to the first end of the second primary trace when the RF hybrid coupler is active, and (ii) a second end configured to provide a second degree of RF coupling to the second end of the first primary trace when the RF hybrid coupler is active. First and second energy cancellation circuits are also provided.

Abstract: A coupler for a communication system, including: a first conductive trace including a first coupling section; a second conductive trace including a second coupling section configured to be adjacent to and spaced from the first coupling section to be galvanically isolated from and coupled to the first coupling section; and a first intermediate conductor provided between and spaced from the first coupling section and the second coupling section to be galvanically isolated from and coupled to both the first coupling section and the second coupling section, where an edge of the first coupling section adjacent to the second coupling section has a first recess, and the first intermediate conductor is provided at the first recess.

Abstract: A method and an apparatus for processing a forwarding entry are disclosed. The method for processing a forwarding entry includes: receiving an entry operation packet through a first data channel; parsing the entry operation packet to obtain forwarding entry operation information; and performing a target operation on a memory based on the forwarding entry operation information, where the target operation includes adding an entry, deleting an entry, or modifying an entry.

Abstract: A solar cell and a preparation method thereof, and a photovoltaic module. The solar cell includes a silicon substrate including a first surface and a second surface that includes first and second regions. A first tunneling and passivation contact structure is provided on the first region, a second passivation structure is provided on the first and the second regions. The second passivation structure on the first region is disposed on the first tunneling and passivation contact structure. A height difference between portions of a surface of the second passivation structure at a side facing away from the substrate on the first region and on the second region is 0.01 ?m to 8 ?m, and/or a height difference between portions of a surface of the second passivation structure at a side facing towards the substrate on the first region and on the second region is 0.01 ?m to 8 ?m.

Abstract: A lighting apparatus includes a light module, a fixing member, a hanging member and an elastic member. The fixing member is fixedly connected to the light module. The fixing member is provided with a side slot. The hanging member is provided with a shaft. The hanging member further includes a hook. The shaft is inserted into the side slot from a side. The shaft is configured to rotate to be in a first state or a second state within the side slot. In the first state the hook is in a vertical position. In the second state the hook is in a horizontal position. The elastic member is fixedly provided on the light module. The elastic member is configured to push upward and press tightly against the shaft to maintain the shaft in the first state or the second state.

Abstract: A lighting apparatus includes an optical component housing, an optical component and a light source. The optical component housing has an optical container and an entrance opening. The entrance opening is disposed on a lateral side of the optical component housing. The optical component housing has a light escape side. The lateral side is at a different plane as the light escape side. The optical component is detachably inserted into the optical container via the entrance opening.a cover manually operable to reveal the entrance opening for inserting the optical component and operable to conceal the entrance opening.a light source. A light is emitted from the light source passing through the optical component and escaped from the light escape side.

Abstract: This application discloses a packet forwarding method and apparatus, a device, and a storage medium. The method includes: obtaining packet configuration information, where the packet configuration information includes a packet parsing rule; parsing a received target packet based on the packet configuration information to obtain a target packet feature; obtaining a packet forwarding rule corresponding to the target packet based on the target packet feature; and forwarding the target packet according to the packet forwarding rule corresponding to the target packet. Because packet features of different service data are different, the different service data is distinguished based on the different packet features, and is forwarded according to different forwarding rules. This implements forwarding control of the different service data, improves service data forwarding efficiency and adjustment precision, and avoids low service data transmission efficiency and incapability of splitting the different service data.

Abstract: Base station antennas are provided. A base station antenna includes a reflector that has a plurality of faces that face in different directions. The base station antenna includes a plurality of arrays of radiating elements that are on the faces, respectively, of the reflector. Moreover, the base station antenna includes a plurality of parasitic elements that are on the faces. Related methods of operating a base station antenna are also provided.

Abstract: A lighting apparatus includes a driver housing, a first LED module, a first lens plate, a second LED module, a second lens plate, a first light wing, a second light wing, a first lens cover and a second lens cover. The first LED module emits a first light. The second LED module emits a second light. The first light wing has a first light opening and a first lens entrance. The first light passes through the first lens plate to escape from the first light opening. The first light wing and the second wing are disposed on two sides of the driver housing. The first lens cover is used for concealing the first lens entrance. The second lens cover is used for concealing the second lens entrance.

Abstract: The present application discloses a sound absorbing device to be placed in an airflow that is in a first direction. The sound absorbing device includes a housing; a plurality of sound absorbing units disposed in the housing to be passed by the airflow, the plurality of sound absorbing units being arranged in a direction perpendicular to the first direction, any two adjacent sound absorbing units being separated by a gap; and a plurality of supports fixed in the housing. The plurality of sound absorbing units are fixed to the housing through the plurality of supports.

Abstract: A lighting apparatus includes a light module, a fixing member, a hanging member and an elastic member. The fixing member is fixedly connected to the light module. The fixing member is provided with a side slot. The hanging member is provided with a shaft. The hanging member further includes a hook. The shaft is inserted into the side slot from a side. The shaft is configured to rotate to be in a first state or a second state within the side slot. In the first state the hook is in a vertical position. In the second state the hook is in a horizontal position. The elastic member is fixedly provided on the light module. The elastic member is configured to push upward and press tightly against the shaft to maintain the shaft in the first state or the second state.