31results about How to "Achieve high concentration" patented technology

The invention discloses a microwave power amplifier chip carrier and a preparation method thereof. The microwave power amplifier chip carrier includes: a high-silicon aluminum alloy substrate, a chip pad and a film capacitor, wherein the chip pad includes a chip welding metal layer and a carrier welding metal layer. Film capacitors include adhesive layers, dielectric layers, and electrode metal layers. The manufacturing method includes the following steps: providing a surface-polished high-silicon aluminum alloy substrate, sequentially forming an adhesive layer and a dielectric layer in the film capacitor region on the first surface of the substrate; forming a metal layer on the surface of the substrate; and performing scribing after forming a carrier welding metal layer on the second surface of the substrate. The microwave power amplifier chip carrier and manufacturing method provided by the present invention integrate the microwave power amplifier chip pad and the chip capacitor into one body, which can effectively reduce the manufacturing process steps of microwave components and reduce the difficulty of the process. In addition, the chip carrier also has excellent heat dissipation performance, grounding performance and reliability.

The invention relates to an integrated motor speed reduction driving system for a helicopter empennage. The integrated motor speed reduction driving system comprises a disk type motor and a two-levelspeed change mechanism, wherein the disk type motor comprises a stator, a rotor, a roller bearing and a bearing bracket; the two-level speed change mechanism comprises a speed change box body, an output shaft, two gear pairs, a middle shaft and a synchronizer. The improvement is that: the integrated motor speed reduction driving system further comprises a split type middle transmission mechanism;the middle transmission mechanism comprises a rotary sleeve arranged on the output shaft in a sleeving manner, a rotary bracket, a first rotary body, a second rotary body, a third rotary body and thelike. The split type structure of the integrated motor speed reduction driving system reduces non-uniform stress on the output shaft, avoids the impact influence on the output shaft in a gear shiftingprocess, and guarantees stable operation of a helicopter tail rotor. A power end of the integrated motor speed reduction driving system for the helicopter empennage is directly output from a rotor end of the disk type motor, so that high integration of the integrated structure of a motor speed reducer is realized; the disk type motor is powered by an APU or a battery, so as to fulfill the aim ofelectrically driving a helicopter to be balanced or change the direction.

The invention provides a method and device for integrating resources. The method for integrating resources comprises the following steps of: setting a priority level for a downlink time slot in a cell according to a predetermined time slot selecting rule; setting a priority level for carrier frequency in the cell according to a predetermined carrier frequency selecting rule; and distributing the user service to the carrier frequency with the highest priority level and the time slot with the highest priority level. According to the method and device for integrating resources, the priority levels of the time slot and the carrier frequency in the cell are set according to the predetermined time slot selecting rule and the predetermined carrier frequency selecting rule, and the user is distributed to the specific time slot of the specific carrier frequency in consideration of the time slot centralization and the carrier frequency centralization when the channel is distributed for users in response to the calling request initiated by the users, thereby realizing the highly centralized user distribution and achieving high efficiency and energy conservation of a TD-SCDMA (Time Division-Synchronization Code Division Multiple Access) system.