Abstract: A method for manufacturing a golf ball having a multi-layered pattern is provided. Firstly, a semi-finished product of the golf ball is provided and includes a ball-shaped body and a base layer covering an outer surface of the ball-shaped body. Then, the semi-finished product of the golf ball is rotated at a predetermined rotation speed, and a color paint is applied to the semi-finished product of the golf ball by spraying from each of an upper position, a middle position, and a lower position. The multi-layered pattern includes an upper-layer pattern area, a mid-layer pattern area, and a lower-layer pattern area that are different in color from each other.

Abstract: A method and system for inspecting deviation in dynamic characteristics of a feeding system are provided, and the method includes: exciting the feeding system and detecting vibrations of a subcomponent of a component to be inspected of the feeding system to generate a monitoring excitation signal in a monitoring mode; calculating, by a modal analysis method, monitoring eigenvalues and monitoring eigenvectors of the monitoring excitation signal; determining, by a modal verification method, similarity between the monitoring eigenvalues and standard eigenvalues of a digital twin model and similarity between the monitoring eigenvectors and standard eigenvectors of the digital twin model; determining that the dynamic characteristics of the subcomponent are deviated, when the monitoring eigenvalues and monitoring eigenvectors are not similar to the standard eigenvalues and standard eigenvectors. Therefore, the subcomponent whose dynamic characteristics are deviated can be sensed remotely and precisely.

Abstract: A multi-board mid-plane includes a disk backplane board (DBB) having a front side and a rear side. Venting holes are provided within the DBB extending between the front side of the DBB and the rear side of the DBB. The multi-board mid-plane also includes a controller backplane board (CBB) having a front side and a rear side. The front side of the CBB includes venting holes provided within the CBB extending between the front side of the CBB and the rear side of the CBB. A top fabric plane board (TFPB) and a bottom fabric plane board (BFPB) are provided for connecting the DBB with the CBB. A combination of the DBB and the CBB has a venting ratio that is equal to a lower of the venting ratio of the DBB and the venting ratio of the CBB.

Abstract: An antenna structure includes a substrate and a plurality of radiation units, each radiation unit comprising a first radiator and a second radiator. The first radiator is positioned on a first surface of the substrate and includes a first radiation portion and a feed point. The feed point is electrically connected to the first radiation portion for feed current and signals to a corresponding radiation unit. The second radiator is positioned at a second surface of the substrate and is symmetrical with the first radiator about the substrate. The second radiator includes a second radiation portion and a ground portion. The ground portion is electrically connected to the second radiation portion to provide grounding for the radiation unit. The antenna structure has a good radiation efficiency and good isolation between radiators to reduce cross-interference.

Abstract: An antenna structure with wide radiation bandwidth includes a first radiation portion, a ground portion, a connection portion, a second radiation portion, and a feed portion. The ground portion is positioned at a plane perpendicular to plane of the first radiation portion. The ground portion is grounded. The connection portion connects to one side of the first radiation portion. The second radiation portion connects to one side of the connection portion away from the first radiation portion. The feed portion is electrically connected to the connection portion and the second radiation portion for feeding current and signals to the antenna structure.

Abstract: An antenna structure includes a substrate and a plurality of radiation units, each radiation unit comprising a first radiator and a second radiator. The first radiator is positioned on a first surface of the substrate and includes a first radiation portion and a feed point. The feed point is electrically connected to the first radiation portion for feed current and signals to a corresponding radiation unit. The second radiator is positioned at a second surface of the substrate and is symmetrical with the first radiator about the substrate. The second radiator includes a second radiation portion and a ground portion. The ground portion is electrically connected to the second radiation portion to provide grounding for the radiation unit. The antenna structure has a good radiation efficiency and good isolation between radiators to reduce cross-interference.

Abstract: An antenna structure with wide radiation bandwidth includes a first radiation portion, a ground portion, a connection portion, a second radiation portion, and a feed portion. The ground portion is positioned at a plane perpendicular to plane of the first radiation portion. The ground portion is grounded. The connection portion connects to one side of the first radiation portion. The second radiation portion connects to one side of the connection portion away from the first radiation portion. The feed portion is electrically connected to the connection portion and the second radiation portion for feeding current and signals to the antenna structure.

Abstract: A multi-board mid-plane includes a disk backplane board (DBB) having a front side and a rear side. Venting holes are provided within the DBB extending between the front side of the DBB and the rear side of the DBB. The multi-board mid-plane also includes a controller backplane board (CBB) having a front side and a rear side. The front side of the CBB includes venting holes provided within the CBB extending between the front side of the CBB and the rear side of the CBB. A top fabric plane board (TFPB) and a bottom fabric plane board (BFPB) are provided for connecting the DBB with the CBB. A combination of the DBB and the CBB has a venting ratio that is equal to a lower of the venting ratio of the DBB and the venting ratio of the CBB.

Abstract: An antenna structure includes a feed unit, a grounding unit, a first radiating unit, a second radiating unit, third radiating unit, fourth radiating unit, and a fifth radiating unit. The grounding unit is spaced apart from the feed unit. The first radiating unit is electrically connected to the feed unit. The second radiating unit is electrically connected to the grounding unit. The third radiating unit is electrically connected to the first radiating unit, the second radiating unit, and the fourth radiating unit. The fifth radiating unit is electrically connected to the feed unit and couples with the fourth radiating unit.

Abstract: An antenna structure includes a main antenna, a diversity antenna, and at least one accessorial antenna. The main antenna extends in a main antenna direction. The diversity antenna is spaced apart from the main antenna and extends in a first radiation direction substantially parallel to the main antenna direction. The at least one accessorial antenna extends in a second radiation direction which is substantially perpendicular to either the main antenna direction or the first radiation direction.

Abstract: An electronic device includes a radio frequency power amplifier, a storage device, at least one processor, and one or more modules that are stored in the storage device and executed by the at least one processor. The one or more modules includes a power obtaining module, a comparing module, and an indicating module. The power obtaining module obtains an output power of the radio frequency power amplifier. The comparing module compares the output power of the radio frequency power amplifier obtained by the power obtaining module with at least one pre-determined value, and the comparing module outputs a comparing result according the comparison of the output power and the at least one pre-determined value. The indicating module generates an alerting signal according to the comparing result output from the comparing module, for indicating electromagnetic radiation of the electronic device.

Abstract: An electronic device includes a radio frequency power amplifier, a storage device, at least one processor, and one or more modules that are stored in the storage device and executed by the at least one processor. The one or more modules includes a power obtaining module, a comparing module, and an indicating module. The power obtaining module obtains an output power of the radio frequency power amplifier. The comparing module compares the output power of the radio frequency power amplifier obtained by the power obtaining module with at least one pre-determined value, and the comparing module outputs a comparing result according the comparison of the output power and the at least one pre-determined value. The indicating module generates an alerting signal according to the comparing result output from the comparing module, for indicating electromagnetic radiation of the electronic device.

Abstract: An antenna structure includes a feed unit, a grounding unit, a first radiating unit, a second radiating unit, third radiating unit, fourth radiating unit, and a fifth radiating unit. The grounding unit is spaced apart from the feed unit. The first radiating unit is electrically connected to the feed unit. The second radiating unit is electrically connected to the grounding unit. The third radiating unit is electrically connected to the first radiating unit, the second radiating unit, and the fourth radiating unit. The fifth radiating unit is electrically connected to the feed unit and couples with the fourth radiating unit.

Abstract: An antenna assembly includes a first antenna, a second antenna, and at least one connecting member. The first antenna includes a radiator and at least one connecting portion connected to the radiator, and the radiator is a part of a housing of a wireless communication device. The at least one connecting member is connected to the at least one connecting portion to fix the first antenna to the wireless communication device to feed current to the first antenna and the second antenna.

Abstract: A wireless communication device includes a cover, an antenna, and an adjusting member. The adjusting member is slidably mounted to the cover and is made of non-conductive materials. The antenna includes a extending portion, the extending portion is sandwiched between the cover and the adjusting member. The adjusting member contacts and partially overlaps with the extending portion, the adjusting member slides relative to the cover to change contact positions of the extending portion and the adjusting member.

Abstract: An antenna module includes an antenna, a connecting member attached to the antenna, a sliding board configured for sliding relative to connecting member, and a radiation member attached to the sliding board. When the sliding board is slid by a user, the radiation member makes contact with or separates from the connecting member, enabling one antenna module to receive and transmit wireless signals of different wavelengths.

Abstract: A wireless communication device includes a cover, an antenna, and an adjusting member. The antenna includes a first radiator and a second radiator separate from the first radiator. The adjusting member is slidably mounted to the cover and is made of conductive materials. The adjusting member is positioned between and connecting the first radiator and the second radiator. The adjusting member is slid relative to the cover to change connection positions of the adjusting member relative to the first radiator and the second radiator.

Abstract: A wireless communication device includes a cover, an antenna, and an adjusting member. The adjusting member is slidably mounted to the cover and is made of non-conductive materials. The antenna includes a radiator, the radiator is mounted on the cover and is shielded by the adjusting member. The adjusting member slides relative to the cover to shield different areas of the radiator.

Abstract: An antenna module includes an antenna, a number of conductive elements, and a connecting element. The conductive elements and the connecting element are made of conductive material. The conductive elements are adjacent to the antenna, and the connecting element allows for the connection of different numbers of the conductive elements to the antenna depending upon the desired working frequency for the antenna to increase a current length of the antenna.

Abstract: A wireless communication device includes a printed circuit board (PCB), a main antenna, an auxiliary antenna, and a metal member. The main antenna, the auxiliary antenna, and the metal member are positioned on the PCB. The metal member is spaced from the auxiliary antenna to allow current to be coupled from the auxiliary antenna to the metal member. Thus, the main antenna and the auxiliary antenna jointly form an orthographic electromagnetic field.