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101 results about "High mode" patented technology

System high mode. System high mode, or simply system high, is a security mode of using an automated information system (AIS) that pertains to an environment that contains restricted data that is classified in a hierarchical scheme, such as Top Secret, Secret and Unclassified.

Differential dual-polarized dielectric resonator antenna

Disclosed is a differential dual-polarized dielectric resonator antenna. The differential dual-polarized dielectric resonator antenna comprises a grounding substrate, and a crossed dielectric resonator arranged on the grounding substrate, wherein the crossed dielectric resonator is equivalent to two rectangular dielectric resonators formed in an orthorhombic manner; a group of differential feed structures are arranged at the two ends of each rectangular dielectric resonator in an mirror image manner separately; and each group of the differential feed structures are electrically connected with one group of differential feed interfaces on the other surface of the grounding substrate. The differential feed way is designed on the basis of the crossed dielectric resonator; the differential feed can suppress an electromagnetic field to be in higher mode in same-phase distribution; a virtual ground formed by the differential feed can suppress influence between orthogonal modes of the two rectangular dielectric resonators which are equivalent to the crossed dielectric resonator; therefore, when a dual-polarized radiation function is realized by the orthogonal modes of the two rectangular dielectric resonators, compared with a single-end dielectric resonator antenna, the differential dual-polarized dielectric resonator antenna disclosed by the invention suppresses a part of stray pattern, remarkably improves port isolation degree and lowers crossed polarization.
Owner:NANTONG UNIVERSITY +1

Dual-electron-beam terahertz wave radiation source in overmode cascading high frequency structure

The invention provides a dual-electron-beam terahertz wave radiation source. The terahertz wave radiation source adopts an overmode cascading folded waveguide traveling-wave amplified high frequency structure, so that the length of a single-section folded waveguide slow-wave structure can be dramatically shortened, and the demand on the magnetic field is reduced. The terahertz wave radiation source adopts the dual-electron beam excitation mode, so that the output power can be improved, and the demand on the negative electrode current emitting density is reduced as well; the input signal adopts a higher mode TE20 mode, so that the dimension of the slow-wave structure can be enlarged, and the processing of the slow-wave structure can be performed conveniently; within the same terahertz wave radiation source, the high power terahertz wave output is realized, and the design and the processing of the terahertz wave radiation source are facilitated; and therefore, the applications of the terahertz wave radiation source in the anti-interference, harmful substance detection, ultra wide band radar long-distance detection and high-resolution imaging radar and the like are promoted.
Owner:INST OF ELECTRONICS CHINESE ACAD OF SCI

Multimode parallel radio frequency receiving method and device orientated to satellite navigation system of next generator

The invention provides a multimode parallel radio frequency receiving method, which comprises the following steps of: (1) receiving a radio frequency signal through an antenna; (2) multiplexing the same radio frequency frontend by different navigation signals; (3) passing a signal output by the radio frequency frontend through a mirror image rejection receiver structure, wherein the mirror image rejection receiver structure is divided into I/Q (In-phase/Quadrature) paths according to the difference of relative phase positions of local oscillators, the I/Q paths respectively comprise a complex filter, the mirror image multiplexing and mirror image reconstruction are realized through the complex filter, and therefore a plurality of navigation signals are received in parallel; and (4) converting respective received mode signals into digital signals. The method provided by the invention has the advantages of simple control logic and high mode multiplexing rate, and is suitable for being integrated with a single digital baseband chip; particularly, the combined navigation and navigation solution of the plurality of navigation signals can be realized through one frequency synthesizer; and the chip area and power consumption of a multimode parallel GNSS (Global Navigation Satellite System) receiver are greatly reduced.
Owner:PEKING UNIV

Multi-layer hybrid-mode hexagonal substrate integrated waveguide filter

The invention discloses a multi-layer hybrid-mode hexagonal substrate integrated waveguide filter which is high in out-of-band selectivity, small in size and low in loss. An included angle is formed between the coplanar waveguide input end and the coplanar waveguide output end of the filter. Due to the loading effect of a hexagonal coupling slot composite structure arranged on a first metal layer, a resonant secondary mode, a left tilted non-resonant higher mode and a right tilted non-resonant higher mode in cavities can be effectively excited, electromagnetic coupling between a filter source and a load can also be excited, and a signal transmission path is effectively increased. In this way, on the basis of an original transmission zero, two transmission zeros are additionally obtained, coupling between a first resonant cavity and a second resonant cavity can be achieved through two symmetrically distributed V-shaped coupling slots formed in a second metal layer, a fourth transmission zero is generated, so that the width of a stop band is increased, and the attenuation of the stop band is increased. Meanwhile, the multi-layer hybrid-mode hexagonal substrate integrated waveguide filter is low in loss and small in size, thereby being suitable for being popularized and applied in the technical field of microwaves and millimeter waves.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA

High temperature superconducting spiral snake structures and methods for high Q, reduced intermodulation structures

InactiveUS6895262B2Reduced peak current densityReduced intermodulation effectMultiple-port networksSuperconductors/hyperconductorsCapacitanceHigh-temperature superconductivity
Novel structures and methods for forming useful high temperature superconducting devices, most particularly resonators, are provided. Structures resulting in reduced peak current densities relative to known structures achieve numerous desirable benefits, especially including the reduced intermodulation effects of earlier resonators. In one aspect of this invention, a spiral in, spiral out resonator is provided, characterized in that it has an odd number of long runs, at least equal to five long runs, where the long runs are connected by turns, and wherein there are at least two sequential turns of the same handedness, followed by at least two turns of the opposite handedness. In yet another aspect of this invention, it has been discovered that reducing the size of the input and output pads of HTS resonators increases the relative inductance compared to the capacitance. Yet another resonator structure is a spiral snake resonator having a terminal end disposed within the resonator. A wide in the middle structure and wide at peak current density resonator structures utilize enlarged width portions of the resonator in those areas where current density is largest. In yet another aspect of this invention, operation of resonators in high modes, above the fundamental mode, reduce peak current densities. Resonators operated in modes in which current in adjacent long runs are in the same direction further serve to reduce current densities, and intermodulation effects. Symmetric current structures and modes of operation are particularly advantageous where far field effects are compensated for.
Owner:SUPERCONDUCTOR TECHNOLOGIES INC

Damping control method of electronically controlled air suspension frame

The invention provides a damping control method of an electronically controlled air suspension frame. A damping control process of the electronically controlled air suspension frame is decomposed into an automobile body high mode, an automobile body middle mode and an automobile body low mode under a straight driving working condition and a steering mode under a steering working condition; the damping control process is achieved according to a switching control strategy; fuzzy supervisory control is applied on a switching process among working modes through a fuzzy supervisory controller; output of a damping force local controller is gradually weighted and final control input of a system is obtained; and a switching basis between the straight driving working condition and the steering working condition is a turn angle of a steering wheel and a switching basis of the automobile body height is the automobile speed, road conditions and duration. The damping control method of the electronically controlled air suspension frame has the advantages of being capable of achieving that real-time tracking is performed on driving working conditions and supervisory control is performed on the switching process through the damping control process, solving the instability and oscillation problems of the system in a mode switching process and improving the integral performance of the electronically controlled air suspension frame under an overall situation working condition.
Owner:JIANGSU UNIV

Dual-mode multi-beam electronic gun for dual-mode traveling wave tube and method for controlling dual-mode multi-beam electronic gun

The invention discloses a dual-mode multi-beam electronic gun for a dual-mode traveling wave tube and a method for controlling the dual-mode multi-beam electronic gun. The dual-mode multi-beam electronic gun comprises a cathode, a shade gate, an internal grid, an external grid and an anode, which are arranged in sequence, wherein the cathode comprises a cathode molybdenum tube, the inside of which is divided into two parts along the axis of the cathode molybdenum tube; the two parts are separated by insulating ceramic; a cathode sponge body is mounted in one part, and a filament filling and sealing insulator is mounted in the other part and is internally provided with a filament; the end face of the cathode molybdenum tube is provided with a plurality of holes; the internal grid controls the electronic beams in partial holes, and the external grid controls the electronic beams in the rest holes so as to implement dual-mode operation. According to the dual-mode multi-beam electronic gun and the method, a high-mode operation state and a low-mode operation state can be provided, and the control voltage is consistent, so that the electronic beams in two modes can be focused by the same magnetic field.
Owner:HUADONG PHOTOELECTRIC TECHN INST OF ANHUI PROVINCE

Application of high-strength high-mode polyethylene fiber to flexible optical cable manufacturing

The invention relates to the application of high-strength high-mode polyethylene fiber to flexible optical cable manufacturing. The manufacturing method comprises the following steps of: (1) releasing an optical fiber and a high-strength high-mode polyethylene fiber, namely, releasing the optical fiber from an optical fiber disk by an optical fiber wire-releasing device, and simultaneously releasing the high-strength high-mode polyethylene fiber from a high-strength high-mode polyethylene fiber cone by a high-strength high-mode polyethylene fiber wire-releasing device and coating the high-strength high-mode polyethylene fiber on the outer part of the optical fiber; (2) extruding sheath materials by a plastic extruding machine, and coating the sheath materials on the outer part of the high-strength high-mode polyethylene fiber to obtain the semi-finished product of the flexible optical cable; and (3) cooling, blow-drying and winding the semi-finished product of the flexible optical cable to obtain the flexible optical cable. Compared with the prior art, the application of the high-strength high-mode polyethylene fiber to the flexible optical cable manufacturing improves the strength and modulus of the flexible optical cable, reduces mass of the flexible optical cable, makes the flexible optical cable possess excellent ultra-violet resistance, anti-corrosion, wear resistance and deflection, and greatly lowers the manufacturing cost of the flexible optical cable, and greatly facilitates the use of the flexible optical cable.
Owner:SURREY HI TECH INC

Network oiling method

The invention relates to a method for adding oil to network, in particularly a network adding oil method that filament middle, high speed spinning generates network and processes pulverization adding oil to filament. Compressed air is blowed in a network device filament channel for ejecting filament in the filament channel, accordingly generating transverse impact to open and dispersedness, occurs higher-mode vibration to confound and wind which has characteristics that: a pulverization oil agent is inlet in the filament channel, direction of inlet is in conformity with the direction of the compressed air blowing in or in side direction of the compressed air blowing in, position of the pulverization oil agent inlet in the filament channel leans to filament inlet port side of the filament channel and is not lower than position of the compressed air blowing in. The method solves problems that many friction points, large filament intension and large filament beam cross section or uneven adding oil to filament beam when monofilament amount is large caused by two working procedures of network and adding oil separated in filament high speed spinning normal production, remedy shortage of large friction force between filament beam and air caused by later filament beam adding pre-network in normal spinning and delaying filament beam amplexus.
Owner:JIANGSU HENGLI CHEM FIBER

Holder mechanical structure multi-objective integrated optimization method based on ISIGHT joint simulation

The invention discloses a holder mechanical structure multi-objective integrated optimization method based on ISIGHT joint simulation. According to the method, a light and small multi-rotor unmanned aerial vehicle holder is used as a research object. The objective of the invention is to solve the problems of multi-objective requirements of a light and small multi-rotor unmanned aerial vehicle pan-tilt system on a structure and low optimization efficiency of a complex finite element simulation model. Appropriate optimization design parameters are selected through sensitivity analysis, an approximation model algorithm is established by utilizing a response surface model and a neural network model, meanwhile, a multi-objective integrated optimization algorithm scheme is established by combining and utilizing an improved genetic algorithm, and light-weight high-mode multi-objective optimization design of the pan-tilt-zoom mechanical system is realized. According to the invention, a joint simulation platform is established based on the integration of an SOLIDWORKS and an ANSYS WORKBENCH by the ISIGHT. A complex pan-tilt structure simulation model does not need to be established, the design cycle and cost are saved when the design requirements are met, and the method has the advantages of being high in efficiency and facilitating engineering implementation.
Owner:BEIHANG UNIV
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