50results about How to "High working frequency" patented technology

An actuating device (1) for carrying out mechanical work by means of a slave piston rod (5) in a hydraulically-operated slave cylinder (2), where the actuating device (1) is made up of a hydraulic pump (3) integrated with a slave cylinder (2) and where the hydraulic pump (3) is driven by a linear electric motor, which consists of a pump piston (7) which is used as rotor in the linear motor at the same time as the pump piston (7) functions as a pumping piston in the hydraulic pump (3) to build up a hydraulic pressure in the slave cylinder (2).

An exemplary semiconductor circuit bus system includes: a first bus comprised of distributed buses and having a first transfer rate; a second bus with a second transfer rate higher than the first transfer rate; a transmission node; a bus interface (IF) to connect the transmission node to the first bus; a router which connects the first and second buses; and a reception node connected to the second bus. The bus IF controls the flow rate of data flowing through the transmission routes of the first bus by reference to information about the amounts of transmissible data of the transmission routes. The router allocates the amounts of transmissible data to the transmission routes of the first bus and provides information about the amounts of transmissible data of the transmission routes for the bus IF and also controls the flow rate of the data flowing through the second bus.

An extensible solid surface antenna reflector made from shape memory materials relates to a extensible antenna reflector, which is to resolve the problem that the prior extensible antenna reflector used in aerospace can not simultaneously meet the requirements of large diameter and working at high frequency. The reflector body thereof (1) is in a shape of paraboloid provided with a round opening in the middle, a first shape memory material ring reinforcing component (2) is fixedly connected with the upper edge of the back surface of the reflector body (1), a second shape memory material ring reinforcing component (3) is fixedly connected with the lower edge of the back surface of the reflector body (1), and a radial reinforcing plates (4) arrayed in a parabolic direction are equipped on the back surface of the reflector body (1) between the first shape memory material ring reinforcing component (2) and the second shape memory material ring reinforcing component (3). The invention is provided with a solid surface, the diameter of the antenna is large, working frequency is high (higher than 40 GHz), surface density of the reflector is low, antenna gain is relatively high, and also structure is simple, system structures and control processes is less, and operation reliability of the system is high.

The invention relates to the technical field of mechanical vibration measurement, and discloses a device for accurately measuring mechanical vibration by photon counter. The device comprises a laser, an optical isolator, an adjustable attenuator, an optical fiber coupler, a single-photon counter and an FPGA post-processing module, wherein the laser enters the optical fiber coupler after passing through the optical isolator and the adjustable attenuator, and then enters into a measured object. The transmitted signal of the object to be measured returns to the optical fiber coupler and is output to the single-photon counter; the mechanical vibration of the measured object is analysed and obtained by the FPGA post-processing module connecting with the output terminal of the single-photon counter. This invention solves the problem that weak mechanical vibration is difficult to measure, and realizes microscopic vibration measurement of light-permeable objects such as nanofiber cavities by using a single photon counter.

The invention relates to a laminated sheet type ceramic delay line, which belongs to the technical field of electronic components. The delay line comprises a plurality of metal wire delay cell laminated bodies and a plurality of metal ground electrode laminated bodies, wherein the plurality of the metal wire delay cell laminated bodies and the plurality of the metal ground electrode laminated bodies are laminated together in a staggered mode; a plurality of the metal wire delay cells are connected in series in turn and are connected to the surface of a device through metallized through holes; and the surface of the device is provided with a signal input end, a plurality of signal output ends, a ground electrode port and a port mark. With the adoption of a low temperature co-fired ceramic (LTCC) technology, a plurality of the metal delay line cells which are connected in series in turn are integrated in a lamination mode, so that the volume and the weight of the delay line are effectively reduced, and the delay line has the characteristics of good insulation property, great merit factors, high self-resonance frequency, wide working bandwidth and the like; and simultaneously, metal delay cells are embedded in a dielectric ceramic body to improve the reliability of the delay line so that the delay line can adapt to various different working environments.

The invention discloses a vehicle-mounted radar antenna. The vehicle-mounted radar antenna comprises a radiation layer, a slab waveguide power distribution layer, a mode conversion layer and a feedingnetwork layer which are sequentially arranged from top to bottom, wherein the feeding network layer outputs multichannel TE10 mode signals, the energy distribution of the multichannel TE10 mode signals output by the feeding network layer is approximate to Taylor distribution, and the mode conversion layer is used for separately converting each channel of the corresponding TE10 mode signal outputby the feeding network layer into a quasi-TEM mode line source signal and sending the quasi-TEM mode line source signals to the slab waveguide power distribution layer, each channel of the corresponding quasi-TEM mode line source signal is divided into two parts by the slab waveguide power distribution layer and then sent to the radiation layer, and the radiation layer radiates planar waves outwards. The radar antenna has the advantages that the working frequency band is high on the basis of a low profile and a high gain.

The invention discloses a millimeter-wave broadband receiver, which includes a V-band channel, a W-band channel, a radio frequency switch and a subsequent frequency conversion channel; the V-band channel and the W-band channel are output to the subsequent frequency conversion channel through the radio frequency switch; the V-band channels and W-band channels are used for the collection and processing of input signals; the subsequent frequency conversion channel is used for frequency conversion of the output signal of the radio frequency switch. The millimeter-wave broadband receiver of the present invention can overcome the problems of the existing assembly technology and the processing precision of the structural parts are not high enough; through the design of the rectangular waveguide-microstrip transition structure, it is convenient for the components of the circuit to be mixed and integrated; the frequency conversion can be reasonably adjusted according to the usage conditions The gain of the channel; the receiver has high out-of-band rejection characteristics, and has excellent working performance such as extremely high operating frequency, wide operating frequency band, small noise figure, low phase noise, and wide intermediate frequency bandwidth.

A dynamic random access memory device may include DRAM memory cells including several lines of memory cells, and line selection circuitry associated with each line. The line selection circuitry may include a first voltage-elevator stage configured to receive two initial control logic signals each having an initial voltage level corresponding to a first logic state, and to deliver two intermediate control logic signals each having an intermediate voltage level above the initial level and corresponding to the first logic state. The line selection circuitry may also include a control circuit to be supplied by PMOS transistors with a supply voltage having a second voltage level greater than the intermediate voltage level, and configured to, in the presence of the two intermediate control logic signals have their first logic state deliver to the gates of the memory cell transistors, a selection logic signal having the second voltage level.