Abstract: The present disclosure relates to the field of sound production, and provides a diaphragm including a dome and a suspension surrounding the dome. The dome includes a first surface fixedly connected to the suspension, and a second surface disposed opposite to the first surface and facing away from the suspension. The dome is provided with a through hole in communication with the first surface and the second surface, and the through hole is adjacent to edges of the dome but does not reach the edges of the dome. The present disclosure further provides a speaker including the diaphragm. The diaphragm and the speaker according to the present disclosure have the advantages of ensuring the strength of the dome while ensuring the leakage of the glue inside the speaker.

Abstract: The present disclosure discloses a speaker assembly including a frame with an accommodation space, a magnetic circuit system and a vibration system accommodated in the frame. The vibration system includes a first vibration system and a second vibration system which are arranged with an interval. The first vibration system includes a first diaphragm and a first voice coil driving the first diaphragm, the second vibration system includes a second diaphragm and a second voice coil driving the second diaphragm to vibrate. The first diaphragm and the second diaphragm have the same vibration direction. The present disclosure has two vibration systems which break through the restriction of the height of the voice coils in the traditional structure and therefore further improve the product performance.

Abstract: The present disclosure provides a speaker including a frame having an accommodating space, a vibration system and a magnetic circuit system that are accommodated in the accommodating space. The vibration system includes a first diaphragm configured to vibrate and produce sound, a voice coil located below the first diaphragm and configured to drive the first diaphragm to vibrate and produce sound, a flexible circuit board electrically connected to the voice coil and elastically supporting the voice coil, and a second diaphragm fixed to the flexible circuit board. The flexible circuit board includes a first fixing portion connected to the voice coil, a second fixing portion disposed opposite to and separately from the first fixing portion, and an elastic arm connecting the first fixing portion and the second fixing portion. An orthogonal projection of the elastic arm toward the second diaphragm is partially located within a range of the second diaphragm.

Abstract: The present disclosure provides a loop antenna system, including a back cover, a main board, a plastic back shell, and a loop antenna. The loop antenna including a first loop radiating unit, a second loop radiating unit, and a connecting member connecting the first loop radiating unit and the second loop radiating unit. Compared with the related technologies, the loop antenna system provided in the present disclosure has the following advantageous effects: by disposing a connecting member over an earphone base, the problem is solved that limitation to the thickness of a conventional entire structure results in that no bracket may be disposed over an earphone base, thereby eliminating the limitation to layout of an antenna by an earphone base. The present disclosure also provides a mobile terminal.

Abstract: A vibration system includes: an external device, a vibrator detachably fixed to the external device, a processor in signal transmission with the vibrator, and a control device configured to control the processor. The processor is configured to receive a wireless signal containing vibration characteristic data sent by the control device, and parse the wireless signal to obtain a drive signal, and the vibrator is configured to receive the drive signal to generate vibration. A method of adding a tactile impression is also provided. With the vibration system and the method of adding the tactile impression provided, a tactile impression experience of the external device can be achieved without changing a structure of the external device.

Abstract: A speaker is provided, including a holder, a diaphragm fixed to the holder, and a voice coil located under the diaphragm and configured to drive the diaphragm to vibrate to sound. The diaphragm includes a diaphragm body, a protruding portion extending from the diaphragm body while being bent towards the voice coil, and a dome fitted to the protruding portion. The protruding portion includes a first wall and a second wall connected to the first wall and parallel to the diaphragm body. The diaphragm body is provided with a suspension disposed around the dome. The speaker of the present disclosure has the diaphragm of an improved structure, which greatly increases the adhesion between the dome and the diaphragm, effectively improves the reliability of the product, reduces the total harmonic distortion, and improves the acoustic performance of the product.

Abstract: An antenna system and a mobile terminal are provided. The antenna system includes a front frame rib connecting a system ground with a first short-axis frame, a slit provided on a first long-axis frame, a radio frequency front end area provided in system ground, and first and second frame-joint points each connecting radio frequency front end area with a metal frame. The first and second frame-joint points are located between front frame rib and slit. The radio frequency front end area includes a feeding point, a matching circuit, an impedance tuning circuit and a switching circuit. The impedance tuning circuit and the switching circuit are adjusted to switch an operating state of antenna system in such a manner that the antenna system operates in different frequency bands. The antenna system includes one operating state in which the antenna system operates in a frequency band ranging from 1710 MHz to 2700 MHz.

Abstract: The present disclosure provides an antenna system of a mobile terminal. The mobile terminal includes a housing, a mainboard accommodated in the housing, a plastic holder covering the mainboard, and a USB interface installed on the mainboard. The antenna system includes a radiator formed on a surface of the plastic holder facing the housing, and a feed end, a first ground point and a second ground point that are disposed on the mainboard. The radiator includes a feed end and a ground feed end spaced apart from each other, a connection end connecting the feed end and the ground feed end, a first stub connected to the ground feed end, and a second stub and a third stub connected to the feed end. The antenna system provided by the present disclosure is more space-saving, and reduces the impact of the USB interface on the antenna.

Abstract: A diaphragm is provided, including a dome and a suspension extending from a periphery of the dome. The dome includes a stack of an aluminum foil layer, a foam layer and a carbon fiber layer. The dome is recessed from the aluminum foil layer toward the carbon fiber layer to form a receiving recess. The receiving recess is arranged surrounding the periphery of the dome. The suspension is partially received in the receiving recess and is fixed to the dome. A sounding device is also provided, the sounding device includes the diaphragm. The diaphragm and the sounding device of the present disclosure have better high frequency acoustic performance and excellent reliability.

Abstract: The present disclosure relates to a thermoforming method, a thermoforming mold, and a thermoforming device.

Abstract: The invention relates to the technical field of communication and discloses a phased array antenna system and a mobile terminal. In the invention, the phased array antenna system includes a first group of antenna unit arrays and a second group of antenna unit arrays, wherein the beam radiated by the first group of antenna unit arrays covers the a first half space, and the beam radiated by the second group of antenna unit arrays covers a second half space, the first half space and the second half space constitutes an omnidirectional space. The phased array antenna system provided by the invention and the mobile terminal achieve the full coverage of the phased array antenna around the mobile terminal, thereby improving the signal sending-receiving efficiency of the mobile terminal.

Abstract: The present disclosure provides a linear vibration motor, including a base having a receiving space, a vibration unit located in the receiving space, an elastic member fixed to the base and suspending the vibration unit in the receiving space, and a coil fixed to the base and opposite to and spaced away from the vibration unit. The vibration unit includes a magnet, the magnet is opposite to and spaced away from the coil, the coil includes a first coil for connecting an electric signal and a second coil insulated from the first coil, and both ends of the second coil are connected to each other to form a closed loop. Compared with the related art, the linear vibration motor in the present disclosure has high reliability.

Abstract: A haptic feedback method for a touch display screen of a vehicle is disclosed. The method includes: acquiring a touch operation of a user from the touch display screen of the vehicle; determining a type of the acquired touch operation, and retrieving a pre-stored feedback signal corresponding to the type of the touch operation, wherein different types of the touch operations correspond to different feedback signals; and transmitting the corresponding feedback signal to an actuator, and driving the actuator to vibrate by using the feedback signal for providing haptic feedback. A haptic feedback system and a haptic feedback control device are also provided.

Abstract: The present disclosure provides a speaker, which includes a frame having receiving space, a magnetic circuit system and a vibration system received in the receiving space. The vibration system includes a diaphragm and a voice coil, the magnetic circuit system includes a lower plate fixed to the frame, a primary magnet fixed on the lower plate, two secondary magnets disposed on both sides of the primary magnet, and an upper plate disposed on the secondary magnet, the upper plate includes a first surface facing towards the diaphragm, a second surface distal from the diaphragm, a fixing groove recessed from the second surface towards the first surface and a fixing hole. The fixing groove includes a bottom surface distal from the second surface. The fixing hole extends from the bottom surface to the first surface. The frame being injection-molded is filled in the fixing groove and the fixing hole.

Abstract: An antenna module includes a first antenna and a second antenna. The first antenna forms multiple operating states. By switching the multiple operating states, the first antenna supports an LTE low frequency of 698-960 MHz and an LTE medium-high frequency of 1710-2690 MHz, and supports multi-carrier aggregation in the band. In each operating state, the first antenna also operates in 5G bands of 3300-3800 MHz and 4800-5000 MHz, the second antenna operates in 5G bands of 3300-3800 MHz and 4800-5000 MHz and a new TDD-LTE band of 5150-5925 MHz. The first antenna and the second antenna together form a 2×2 MIMO of 5G bands of 3300-3800 MHz and 4800-5000 MHz. The antenna module provided by the disclosure has better communication performance.

Abstract: The present disclosure provides a massive MIMO array antenna comprising a PCB substrate and a plurality of antenna groups, each of the antenna groups comprises two feeding networks and one antenna unit, each antenna unit comprises an antenna bracket, a radiating piece and four coupling pieces, each of the feeding networks is electrically connected to two of the coupling pieces and performs coupling differential feeding on the radiating pieces by the two coupling pieces, each of the antenna groups is ±45° orthogonal polarization.

Abstract: The present disclosure provides a linear vibration motor. The linear vibration motor includes: a housing and a stator; a vibrator including a mass with a receiving hole and a first driving member disposed in the receiving hole and fixed to the mass; and an elastic support member. The stator includes a fixed member fixed to the housing and passing through the mass via the receiving hole, and a second driving member fixed to the fixed member and spaced apart from the first driving member. One of the first driving member and the second driving member includes a permanent magnet, and the other includes a coil. A first through hole is formed in the top wall. A second through hole is formed in the bottom wall. Two opposite ends of the fixed member in the vibration direction are respectively embedded into the first through hole and the second through hole.

Abstract: The present disclosure provides a speaker, comprising a basin frame with a receiving space, a vibration system disposed at the basin frame, and a magnetic circuit system configured for driving the vibration system to generate sounds by vibration, the vibration system comprises a diaphragm with an outer edge fixedly held by the basin frame and a voice coil configured for driving the diaphragm to vibrate, the voice coil includes a first voice and a second voice coil fixedly connected to the first voice coil, the first and second voice coils are disposed in parallel and symmetrically, the first and second voice coils are integrally wound molded and the winding direction of the first voice coil is opposite to that of the second voice coil. The speaker provided by the present disclosure could improve utilization of magnetic field, provide better vibration effect and reduce resonance frequency.

Abstract: Disclosed are a diaphragm and a loudspeaker using the diaphragm. The diaphragm comprises an edge, a fixing section formed by the edge's outer edge extending outward, and an intermediate section formed by the edge's inner edge extending inward, wherein the edge is disposed with a plurality of stiffeners extending from the edge and across the edge's inner edge to the intermediate section. The loudspeaker includes the diaphragm. The stiffeners disposed on the edge extend to the intermediate section, which increases strength of the inner of the edge, especially of the curved sections. In this way, strength of the edge and stability and pure tone matters of the diaphragm during practical applications may be improved.

Abstract: The present disclosure provides a speaker, including a first housing having a receiving space, a speaker unit received in the receiving space and provided with a diaphragm configured to vibrate and emit sound, a second housing spaced apart from the first housing, and a connecting member communicating the second housing with the first housing. The diaphragm divides the receiving space into a front acoustic cavity and a rear acoustic cavity, and the diaphragm is spaced apart from the first housing that faces right the diaphragm so as to form the front acoustic cavity. The second housing has an auxiliary acoustic cavity, and the connecting member communicates the auxiliary acoustic cavity with the rear acoustic cavity. The speaker improves a low-frequency performance of the speaker; the electronic apparatus adopting the speaker can utilize an internal unoccupied space as the auxiliary acoustic cavity, thereby improving the low-frequency performance of the electronic apparatus.