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70results about How to "Realized gain" patented technology

On-chip antenna electrical property test system and method

The invention provides an on-chip antenna electrical property test system. A millimeter wave test system comprises a vector network analyzer, a millimeter wave controller, a triplexer, a millimeter wave receiving module, and an S parameter test module, and realizes signal generation and receiving measurement. A millimeter wave probe is in connection with the output port of the S parameter test module through a waveguide tube; a probe bench system and a microscope system are in mutual cooperation to realize reliable contact between a probe contact and an on-chip antenna feeding point; a three-shaft rotary table system comprises a lower orientation rotary table, a first L-shaped cantilever, a second L-shaped cantilever, a pitching rotary table, an upper orientation rotary table and a rotary table controller; the millimeter wave receiving module is installed above the three-shaft rotary table system; the input port of the millimeter wave receiving module is provided with a horn receiving antenna which aligns the on-chip antenna at the centre of sphere; a master control computer controls a whole system. The on-chip antenna electrical property test system can accurately measure the standing-wave ratio, directional diagram characteristics and gains of an on-chip antenna.
Owner:CHINA ELECTRONIS TECH INSTR CO LTD

Copper hydrogenation catalyst, especially for converting oxalate to ethylene glycol, method of preparing the catalyst and applications thereof

A copper catalyst for producing ethylene glycol by hydrogenation of an oxalate. The catalyst includes a carrier, an additive, and an active component. The carrier is ceramic or metallic honeycomb. The additive is Al, Si, Ba, Ca, Ti, Zr, Fe, Zn, Mn, V, La, Ce, an oxide thereof, or a mixture thereof. The active component is copper, and the active component and the additive are coated on the carrier to form a coating layer. The additive accounts for 5-90 wt. % of the carrier, the active component accounts for 1-40 wt. % of the carrier, and the copper accounts for 5-50 wt. % of the coating layer.
Owner:TIANJIN UNIV

A vector modulation phase shifter for reconfigurable antenna array beamforming

InactiveCN111726096ASuppression of common mode effectsReduce phaseGain controlAmplifier modifications to raise efficiencyGilbert cellSoftware engineering
The invention relates to a vector modulation phase shifter for reconfigurable antenna array beamforming, comprising: an input balun for converting a single-ended input signal into a differential inputsignal; an orthogonal signal generator, wherein the differential input signal passes through the orthogonal signal generator to generate two paths of orthogonal differential signals, namely an I-pathsignal and a Q-path signal; a variable gain amplifier comprising an I-path variable gain amplifier used for carrying out amplitude modulation and vector synthesis on the I-path signal, and a Q-path variable gain amplifier used for carrying out amplitude modulation and vector synthesis on the Q-path signal; and an output balun used for converting the differential signal into a single-ended signaland outputting the single-ended signal. The variable gain amplifier is suitable for the SiGe BiCMOS process, the balun of a transformer structure is adopted, phase and amplitude imbalance is reduced,the bandwidth of orthogonal signals is widened through the low-coupling-coefficient quadrature coupler, and the amplitude control precision is improved through the variable gain amplifier achieved bycontrolling bias currents combined with the Gilbert cell.
Owner:HEFEI UNIV OF TECH

Clean recovery and production method for waste copper and copper-containing waste

The invention discloses a clean recovery and production method for waste copper and copper-containing waste. The method comprises the following steps of: sorting and classifying the copper-containing waste, and cleaning the sorted waste copper by adopting a sulfuric acid solution to obtain qualified copper and a low-grade copper sulfate solution; dissolving the qualified copper into a copper sulfate solution to obtain a high-grade copper sulfate solution; processing and granulating the sorted copper-containing material or electronic garbage, and dissolving the granulated copper-containing material into a sulfuric acid solution to obtain a low-grade copper sulfate solution and waste slag; sequentially performing extraction and back extraction on the low-grade copper sulfate solution to obtain a high-grade copper sulfate solution; and performing electro-deposition on the high-grade copper sulfate solution to produce a cathode copper or copper product blank, and processing the copper product blank into various copper products. By the method, the high-content waste copper material can be effectively recovered, the waste copper material with low copper content can also be effectively recovered, and the recovery rate reaches 99 to 100 percent. According to the method, pollutants are not discharged, and any fuel is not adopted; and the method is reasonable in design, simple in process, strong in practicability and easy to popularize and implement.
Owner:河南萃海再生资源有限公司

Interference signal suppression device and method of suppressing strong interference signals

The invention discloses an interference signal suppression device, which comprises a low noise amplifier module, a signal conversion module, a signal processing module and a power amplifier module. Inputted radio frequency signals are processed by the low noise amplifier module, the signal processing module and the signal conversion module and are then amplified and outputted by the power amplifier module. The signal conversion module is used for carrying out gain control on the signals inputted by the low noise amplifier module, carrying out first conversion processing on the signals after gain control, outputting the signals to the signal processing module, carrying out second conversion processing on the signals outputted by the signal processing module and outputting the signals to thepower amplifier module. The signal processing module is used for controlling the signal conversion module for gain control and carrying out gain compensation processing on the signals after first conversion processing. The invention also provides a method of suppressing strong interference signals. According to the device and the method disclosed in the invention, the communication quality of network communication equipment can be improved, the reliability of a communication system is improved, and the effect of expanding the application scenario of the communication system can be achieved.
Owner:广州开信通讯系统有限公司

Headbox for a machine for producing a fibrous web

The invention relates to a headbox which comprises a feed device feeding the at least one fiber suspension, a perforated distribution pipe plate arranged immediately downstream thereof and having a plurality of channels arranged in lines and columns, an intermediate channel arranged downstream thereof, extending over the width of the headbox and having a plurality of means for dosing a fluid in partial fluid streams to the at least one fiber suspension in a preferably adjustable / controlled manner, the means being spaced apart from each other in the width direction of the headbox and the individual means comprising a plurality of dosing channels having respective dosing channel openings and an opening center line, arriving at different levels and being connected to a common supply channel. The headbox further comprises a downstream turbulence generator having a plurality of flow channels arranged in lines and columns and a headbox nozzle which is directly contiguous to the turbulence generator and which has a nozzle gap. The headbox according to the invention has a system pressure loss which is substantially composed of a first pressure loss between the feed device and the intermediate channel and a second pressure loss in the turbulence generator, the second pressure loss and the first pressure loss being in a ratio ranging from 8:1 to 1:1, preferably from 4:1 to 1:1, particularly from 2:1 to 1:1.
Owner:VOITH PATENT GMBH

Gain recycling system of liquefied natural gas (LNG) cold energy

The invention relates to a gain recycling system of liquefied natural gas (LNG) cold energy. Heat is absorbed from a refrigeration space and is used for vaporizing low-temperature LNG and a power cycle is constructed between a refrigerant temperature and an LNG temperature, and output power is used for driving a compression refrigeration system and producing cold energy; the gain output of LNG cold energy is achieved by the three-time liquefaction and three-time evaporation of a low-pressure and low-temperature refrigerant steam in the compression refrigeration system and three parts of cold energies are respectively derived from cold energy released from the vaporization process of LNG, cold energy released from rewarming process of low-temperature LNG and cold energy output by the compression refrigeration cycle driven by the power cycle which is driven by the temperature difference between LNG and the refrigeration space. The gain recycling system is applicable to application occasions which are smaller in LNG consumption scale and not suitable for comprehensive recycling of power and cold energy and has flow fluctuations, the cold energy is used as only energy output form for recovering energy, and the gain recycling system has the advantages of very strong feasibility and high efficiency and has good potential for industrialization promotion.
Owner:深圳市开迩文科技有限公司

Switch matrix and test system

PendingCN113612545ACompensate for performance impactRealize channel consistency compensation functionTransmission monitoringRadio frequencyInsertion loss
The invention provides a switch matrix and a test system, and belongs to the technical field of wireless communication transmitting and receiving channel switching test. The switch matrix is an M * N radio frequency matrix, and the M * N radio frequency matrix comprises M * N radio frequency channels, and at least one amplifier module and one attenuator module which are connected to each radio frequency channel; wherein the amplifier module is used for compensating insertion loss on an M * N radio frequency matrix channel; and the attenuator module is used for compensating the consistency of the M * N radio frequency matrix channels. The attenuator module included in the switch matrix can compensate for the consistency of the radio frequency matrix channel so as to dynamically and adaptively adjust the gain of the switch matrix channel and dynamically and adaptively adjust the consistency of the switch matrix channel. The arranged amplifier module compensates for the insertion loss on the radio frequency matrix channel. the influence of traditional matrix insertion loss on the performance of a signal link is compensated.
Owner:NANJING RFLIGHT COMM ELECTRONICS CORP
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