10results about How to "Improve launch performance" patented technology

The invention discloses a micro electro mechanical system (MEMS) ultrasonic transducer, which comprises a transmitting unit, a receiving unit, a transmitting unit and a receiving unit, the decoupling space is positioned between the transmitting unit and the receiving unit; wherein the surface, opposite to the receiving unit, of the transmitting unit is a curved surface. According to the invention, the surface, opposite to the receiving unit, of the transmitting unit is set to be the curved surface, so that the transmitting performance is improved on the premise that the receiving performance is not reduced.

The present application belongs to the technical field of electromagnetic detection, and relates to a composite impedance matching network of a controllable source electromagnetic exploration system and a design method. The composite impedance matching network comprises a topology structure of a CIMN composed of a fixed capacitor CF and an ICLC part in series, and is integrated in a transmitting system of the controllable source electromagnetic exploration system. The CIMN adopts a new combined matching method and related optimization design, improves the wideband current transmission performance in terms of compensation range and power loss, proposes a new combined matching topology structure, and illustrates the corresponding wideband matching function through mathematical derivation and analysis. In combination with the wideband transmission requirement of the controllable source electromagnetic method and the limited power supply condition, a parameter optimization scheme and a control strategy of the composite impedance matching network are designed. The CIMN can better adapt to the wide working frequency range of the CSEM transmitter, improve the matching bandwidth, and reduce the power loss.

This application relates to the field of antenna technology, disclosing an antenna and a communication device. The antenna includes a main board, a radiating structure, a parasitic structure, and a feeding structure. The radiating structure is disposed on the main board and includes high-frequency stubs and low-frequency stubs. The parasitic structure is disposed on the main board and includes high-frequency parasitic stubs and low-frequency parasitic stubs. The high-frequency parasitic stubs are electromagnetically coupled to each other, and the low-frequency parasitic stubs are also electromagnetically coupled to each other. The feeding structure is connected to both the high-frequency and low-frequency stubs, providing electrical signals to them. Through this method, this application enables a single antenna to support communication needs from 2G to 5G and multiple Wi-Fi frequency bands.

The application provides a preparation method of a high-beryllium-content beryllium copper alloy material, which comprises the following steps: melting metal raw materials containing pure copper and a beryllium copper master alloy to obtain an alloy liquid, casting the alloy liquid to obtain an ingot, uniformly treating the ingot to obtain a homogenized casting blank, hot-rolling the homogenized casting blank to obtain a hot-rolled blank, annealing the hot-rolled blank to obtain an annealed blank, performing a cyclic "cold rolling-intermediate annealing" process on the annealed blank, and finally performing finish rolling and product annealing on the alloy strip to prepare the high-beryllium-content beryllium copper alloy material. The method can solve the problems of the second phase component of the high-beryllium-content strip being inconsistent, the strip being cracked, side-bent and wrinkled, and a large number of processing passes in the prior art.

The invention aims to provide an efficient heat dissipation router for network communication, and relates to the technical field of communication equipment, the efficient heat dissipation router comprises a base assembly, the base assembly comprises a balancing weight and an anti-skid pad, and the balancing weight is used for keeping the router stable; the shell assembly comprises a shell, a cover plate, a dustproof plate, a mounting rod, a connecting rod, a sleeve rod and a first antenna assembly and is used for air flow entering and signal transmitting. The mainboard assembly comprises a circuit board and a supporting spring, damping protection is carried out through the supporting spring and the second antenna assembly, and the problem that a traditional router is poor in heat dissipation effect is solved.

The application relates to the technical field of semiconductor photoelectric devices and thin film manufacturing, and particularly discloses a preparation method of a light detector based on a sputtering hybrid semiconductor thin film. The prepared light detector comprises, from bottom to top, a transparent conductive substrate, a bottom charge transport layer, a hybrid semiconductor light absorption layer, a top charge transport layer and a metal electrode. The hybrid semiconductor light absorption layer is prepared by using a magnetron sputtering process based on target self-heating. The thermal electron emission effect of the target self-heating is used to excite high-density plasma at a low working voltage, to rapidly and lowly damage the target for sputtering, and to form a dense and pure-phase hybrid semiconductor thin film. The application uses a multi-dimensional method of adjusting the cathode surface magnetic flux, adjusting the working voltage and target self-heating to improve the plasma density in the chamber. While realizing high-speed deposition of 30-500 nm / min, the hybrid semiconductor thin film defect density is reduced and the photoelectric performance of the light absorption layer is improved.

The application relates to a preparation method of a dual-ligand protected electrochemiluminescence gold nanocluster and application of the electrochemiluminescence gold nanocluster in detection of hOGG1. The electrochemiluminescence gold nanocluster is synthesized in a one-step method with methionine and beta-cyclodextrin as dual ligands. The obtained water-soluble electrochemiluminescence gold nanocluster has good biocompatibility, high electrochemiluminescence efficiency and complete nanomaterial performance. When the specific electrochemiluminescence gold nanocluster is used as an ECL luminophore, and an hOGG1 ECL sensor with triethylamine (TEA) as a co-reactant is applied to detection of human 8-oxoguanine DNA glycosylase (hOGG1), the sensor has higher sensitivity and shows good sensing potential. The sensor is simple to operate, has good repeatability, and has important scientific significance and application value for early clinical diagnosis.

The application relates to the technical field of optical display, and provides a vehicle-mounted HUD sunlight backflow suppression method based on a radiation refrigeration material, which comprises the following steps: acquiring a key heat generation area in a vehicle-mounted HUD affected by sunlight backflow; determining the type of the radiation refrigeration material according to the structural form of the key heat generation area; wherein the type of the radiation refrigeration material at least comprises a radiation refrigeration film or a radiation refrigeration coating; pre-treating the key heat generation area to obtain a target area to which a matching material is coated or attached; coating or attaching the radiation refrigeration material prepared in advance to the corresponding target area based on the determined form type, and blocking the heat absorption caused by the sunlight backflow through the high sunlight reflection characteristic of the radiation refrigeration material, and forming a preset radiation heat dissipation channel through the high mid-infrared emission characteristic to dissipate the heat accumulated in the target area. The application can effectively suppress the severe temperature rise problem caused by the sunlight backflow focusing in the HUD.

The invention relates to the technical field of high-speed optical communication components and driving circuits, in particular to a stability optimization method based on an electric absorption modulator in a specific bias voltage interval, which comprises the following steps: adjusting a parallel matching resistor of an EAM modulation port from 50 ohm to 70 ohm, and forming a stable working area with TDECQ fluctuation not exceeding 0.5 dB in a bias voltage interval of-1.3 V to-1.6 V. According to the invention, on the premise of not introducing an additional compensation circuit or a signal processing algorithm, the sensitivity of TDECQ to the bias voltage is significantly reduced, and the signal integrity, production consistency and environmental robustness of the light emitting module are improved.

The utility model relates to the field of router antennas, in particular to a router antenna with a folding function. The router antenna with the folding function comprises a router body, supporting frames, main antennas and auxiliary antennas, the supporting frames are arranged on the left side and the right side of the router body respectively, the main antennas are rotationally arranged on the front sides in the supporting frames respectively, and the auxiliary antennas are hinged to the rear ends of the main antennas respectively. According to the utility model, through the design of the main antenna and the auxiliary antenna, the signal receiving and transmitting capability can be effectively enhanced, the network performance is improved, meanwhile, the unique foldable design is very practical, and the router is small in size and convenient to carry and store in a folded state; and when the antenna needs to be used, the antenna is unfolded, the signal coverage range can be expanded, the use requirements of a user in different scenes are met, and portability and signal quality are both considered.