Abstract: The application belongs to the field of earphone technology, and discloses a type of noise-reducing earphones with adjustable voice. An audio processor processes voice signals. After a digital signal processor (DSP) completes noise reduction, the signals return to the audio processor, where two signals are combined, through another signal wire. Then the signals are transmitted to a digital-to-analog converter (DAC) that transmits the signals to an acoustic amplifier, where the signals are transmitted to a speaker to realize the adjustment of voice.

Abstract: The utility model discloses a dipole antenna placed on a wireless headphone casing, which comprises two metal conductors fixedly attached to the surface of the headphone casing. The metal conductors are connected to a matching circuit disposed on a PCB that is located in the headphone casing. The utility model presents a dipole antenna wherein the metal conductors are integrated with the earphone casing, and become a part of the earphone casing such that antenna signals are not blocked, and better receiving and transmitting signals are obtained. In addition, the metal conductors are not disposed on the PCB without occupying any space of the PCB, so that the PCB has more space for circuit design.

Abstract: The utility model discloses a headphone with motion sensors, comprising a left channel earphone, a right channel earphone and a main electronic circuit. Motion sensors are provided in the main electronic circuit, the left channel earphone and the right channel earphone respectively. The said motion sensors are all linked to a microprocessor. The utility model provides three motion sensors in the headphone casing and the main electronic circuit to sense the neck position of a person who uses or wears the headphone, sending a prompt message after a long time of lowering head. It helps a user to take a rest in time, and relieve his/her neck pressure.

Abstract: The utility model discloses a coupled-feed dipole antenna, which comprises a PCB, a metal patch, an LTCC antenna, and a transmission line. The said LTCC antenna and the transmission line are disposed on the bottom of the PCB, the ground plane is disposed on the top surface of the PCB, the LTCC antenna is connected to the transmission line, and the signal input is transmitted to the antenna through the transmission line. The said metal patch is disposed on the top surface of the PCB, and fixed to the LTCC antenna by soldering. The utility model sets the LTCC antenna and the metal patch together, turning the original monopole antenna into a coupled-feed dipole antenna. By setting the size of a patch (metal sheet), the antenna resonance working frequency can be lowered to a low frequency without increasing the antenna length.

Abstract: The Invention discloses a planar loop antenna, its applications and application methods, which comprises a PCB, a ground plane and a plane antenna. The said ground plane and the plane antenna are fixed on the PCB, and a rectangular cavity is disposed in the center of the plane antenna. The loop antenna proposed in the present invention, by adjusting the lengths of L1 and L2, obtains different operating frequencies, and meets the use of different antenna products. In addition, the present invention is able to support a spectrum system within 1.5-2.6 GHz and a higher LTE spectrum within 3.3-3.9 GHz by adjusting L1 and L2.

Abstract: The present invention belongs to the technical field of antennas and discloses an antenna line for audio and Bluetooth signals. By arranging an input radio frequency choke, the role of insulating a wireless signal from being transmitted to an audio line can be performed. By arranging an output radio frequency choke, the role of insulating the wireless signal from being transmitted to a loudspeaker can be performed. A bendable transmission line can be used as an earphone cable. An audio signal transmission line and a Bluetooth signal transmission line are mixed together, which reduces a PCB wiring space and makes PCB design simpler and smaller. When the audio signal is transmitted to a Bluetooth antenna or another set of wireless signals, the impedance value is very large, so the audio signal could not reach there and will go from an audio signal input port to the loudspeaker without loss.

Abstract: The present invention discloses a broadband antenna composed of lines, comprising a top metal sheet, a bottom metal sheet, and a plurality of lines that are arranged equidistantly in parallel, and attached unto the top metal sheet. The broadband antenna proposed in the present invention is composed of a plurality of lines attached onto a metal sheet. Different antenna frequencies may be obtained by changing the length of the lines. In this way, antennas of lines with different lengths can be designed according to the characteristics of the short-range radio technology, and the matching application of several short-range radio technologies, such as Bluetooth, ZigBee and cellular communication, can be achieved.

Abstract: The utility model belongs to the technical field of antennas, and discloses a probe-fed antenna for Bluetooth speakers, which comprises a casing, loudspeaker, a PCB, a bracket and an antenna. The bracket is fixed inside the said casing, and the loudspeaker is fixed in the middle of the bracket. The antenna, is fixed between the top of the loudspeaker and one end of the bracket. The PCB is fixed between the bottom of the loudspeaker and the other end of the bracket. The PCB in the utility model is placed on the bottom of the bracket, and the antenna is placed on the top of the bracket. In this way, the PCB and the antenna ere kept away from the loudspeaker, such that the product can achieve the smallest size and the best signal transmission/reception effect. At the same time, the antenna is placed on the top of the bracket. Generally, most casings are made of plastic, not metal because it will not affect the antenna effect. Such a design can change the antenna into a part of the metal casing.

Abstract: The present invention discloses a patch antenna composed of several sets of bonding wires connected to each other. The bonding wires are combined into different antenna lengths, and are disposed in radiating slots on one side of the patch. The present invention adopts a mode in which bonding wires are directly combined into an antenna, and patch antennas with different combined bonding wires bear different frequencies. Therefore, in the production, the PCB structure can be designed first, and then the antenna frequency can be designed by product requirements, so that different wireless communications are satisfied, especially the use of millimeter wave radar antennas. Since the antenna is completely composed of bonding wires, when there is a signal input, the current flows from bottom to top in the bonding wires 1, resulting in a higher axial ratio. Furthermore, since the wavelength of high frequencies is short, the antenna of the present invention may be made very small in size.

Abstract: The utility model discloses an adjustable multi-band planar antenna, which comprises a ground plane, a resonance branch A, and a resonance branch B. The three components are all disposed on the top surface of a PCB. The said resonance branch A and resonance branch B assume an “L” shape. The planar antenna in the utility model comprises two resonance branches, which enables the antenna to support multiple bands and multiple systems (such as GSM, NB-IoT, GPS, WCDMA, LTE, Bluetooth). The antenna can perform frequency tuning in a high frequency band or a low frequency band, so that it obtains better transmission and reception effects at a specific frequency.

Abstract: The application belongs to the field of earphone technology, and discloses a type of noise-reducing earphones with adjustable voice. An audio processor processes voice signals. After a digital signal processor (DSP) completes noise reduction, the signals return to the audio processor, where two signals are combined, through another signal wire. Then the signals are transmitted to a digital-to-analog converter (DAC) that transmits the signals to an acoustic amplifier, where the signals are transmitted to a speaker to realize the adjustment of voice.

Abstract: The application belongs to the field of earphone technology, and discloses a type of monitoring earphones intended for autism spectrum disorder. The upper part of headband is fixed with an electroencephalogram signal sensor, and the two sides thereof are respectively secured with No. 1 buckle and No. 2 buckle, which are used to fix No. 1 No. 1 signal processor and No. 2 signal processor on the upper part of the headband. Once the user is found by the application to be not himself/herself, the earphone will play his/her favorite music with Bluetooth, serving the function of music therapy.

Abstract: The application belongs to the field of earphone technology, and discloses an earphone with volume monitoring. If it is found that the external noise is louder than the noise detected by the right-channel microphone 1 and the left-channel microphone 1, the volume will be increased. The left-channel microphone 2 and the right-channel microphone 2 are used to monitor the volume increased by the user. If it exceeds the standard, the earphone will give a prompt. If the volume exceeds the standard, the micro-control unit will prompt the speaker, or immediately stop the volume or restore the volume to an appropriate level.

Abstract: The application belongs to the technical field of hearing aids, and discloses a type of hearing aid with Bluetooth control. There are keys connected to the micro-control unit so that when a signal is generated for the micro-control unit, the micro-control unit connects the signal to a phone via an antenna on the upper part of the Bluetooth module. With low energy technology employed, the power consumption of the Bluetooth module is relatively low. The hearing aid itself can also be adjusted for different audio through Bluetooth, so that different users can make adjustments according to their needs.

Abstract: The present invention discloses a lumped circuit balance converter applied to double-sided parallel lines, comprising a radio frequency transceiver, a balance converter, a filter and a matching network. The filter is connected with the matching network through the balance transmission line. The balance converter comprises a second circuit block, a first circuit block, a third circuit block, a first port, a second port and a third port. A positive polarity of a signal is positioned at the top of the second port and the bottom of the third port. Balance signals are respectively fed to the converter at the top of the second port and the bottom of the third port, and the signals are combined in the first port. The present invention has simple structure and better effect when used, can be easily changed to different required performance, and has good applicability and strong practicability.

Abstract: The present invention belongs to the field of communication technology and discloses a highly elastic antenna made of bonding wires, which comprises a base plate, a line matched transformer, bonding wires, a primary PCB, a secondary PCB and a line inlet. The upper part of the said base plate is provided with a line matched transformer, a bonding wire, a primary PCB and a secondary PCB, one end of the said primary PCB is connected to the line inlet, a line matched transformer is fixed on the upper part of the primary PCB, and the primary PCB is connected to the secondary PCB via bonding wires. In the present invention, bonding wires are employed as a component of antenna radiant elements. As a radiating antenna, the bonding wire may extend into the third dimensional space via its height, thus reducing the space occupied by the antenna on the PCB. One or more bonding wires may be used for different PCB antennas and the resonant frequency may be adjusted by the length or height of the bonding wire.

Abstract: The utility model belongs to the technical field of headphones, and discloses a headphone transmitting and receiving signals through a feed plate antenna with an L-shaped probe, which comprises a wireless circuit board, a panel, a probe, a plate and a PCB. The bottom of the said PCB is provided with a wireless circuit board, the said PCB is electrically connected to the probe, the top of the said PCB is provided with a panel, and the other end of the said probe is electromagnetically coupled with the plate. The utility model may render different geometric shapes with respect to different designs, and its different characteristic designs may support multiple frequency bands, providing high directivity, so that the headphone product itself transmits and receives signals better. In addition, the antenna can be made part of the appearance, which enables the headphone product itself to transmit and receive signals better.

Abstract: A personalized earphone for people with auditory abnormality, includes a microphone, a preamplifier, an analogue-to-digital (A/D) converter, a Bluetooth wireless circuit, a Digital Signal Processing (DSP) module, a digital-to-analogue (D/A) converter, a post-amplifier and a loudspeaker. The microphone is arranged to pick up an ambient noise and deliver information about the ambient noise to the preamplifier, the preamplifier is arranged to convert the ambient noise to a digital signal and input the digital signal to the DSP module. The DSP module is arranged to internally generate a noise-reduction signal that is converted to an original noise, and convert the noise-reduction signal to an analogue signal that is amplified by the post-amplifier and delivered to the loudspeaker. The DSP module is connected with the Bluetooth wireless circuit.

Abstract: Provided is a foldable broadband antenna. The antenna includes two thin metal sheets that are flexible, thus the broadband antenna is bendable and can conform to a planar or curved surface. Thus, the antenna can either installed on a PCB or installed on other substrate. By adjusting the length of the thin metal sheet, different operation frequencies of the antenna can be obtained. Thus, it is possible to design an antenna with different sizes according to specific requirements, thereby the broadband antenna according to embodiments of the disclosure can be used together with different radio techniques, such as GPS, Bluetooth, ZigBee, cellular communications and the like.

Abstract: The present invention discloses a lumped circuit balance converter applied to double-sided parallel lines, comprising a radio frequency transceiver, a balance converter, a filter and a matching network. The filter is connected with the matching network through the balance transmission line. The balance converter comprises a second circuit block, a first circuit block, a third circuit block, a first port, a second port and a third port. A positive polarity of a signal is positioned at the top of the second port and the bottom of the third port. Balance signals are respectively fed to the converter at the top of the second port and the bottom of the third port, and the signals are combined in the first port. The present invention has simple structure and better effect when used, can be easily changed to different required performance, and has good applicability and strong practicability.