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101 results about "Impedance Converter" patented technology

The negative impedance converter (NIC) is a one-port op-amp circuit acting as a negative load which injects energy into circuits in contrast to an ordinary load that consumes energy from them. This is achieved by adding or subtracting excessive varying voltage in series to the voltage drop across an equivalent positive impedance.

Ultra-wideband miniaturized Vivaldi antenna

The invention belongs to the technical field of communication, and particularly relates to an ultra-wideband miniaturized Vivaldi antenna. The antenna comprises a dielectric substrate, wherein the upper surface of the dielectric substrate comprises a main body Vivaldi antenna, four resistors, two rectangular metal patches and an artificial surface plasma, wherein the main body Vivaldi antenna is provided with an exponential gradually-changed slot; a feed network is arranged on the lower surface and comprises six impedance conversion microstrip transmission lines, a fan-shaped transmission line and a circular groove; the main body antenna and the dielectric substrate are placed in a centered alignment manner, the four resistors are placed at the tail end of the main body antenna, and the rear sides of the resistors are connected with the two rectangular patches; the artificial surface plasma is placed in the main body antenna gradual change gap; and the multi-section impedance transformer and the microstrip-to-slot line structure of the feed network are aligned with the circular slot of the main body antenna. According to the invention, the ultra wide band, miniaturization and high radiation gain are realized by designing the main body antenna, slotting the edge, loading the resistor, carrying out the artificial surface plasma and the like. The working frequency band of the antenna ranges from 0.2 GHz to 18 GHz, and the antenna has the characteristic of miniaturization.
Owner:FUDAN UNIVERSITY

Hydro-generator shaft insulation multi-parameter monitoring method and system

The invention provides a hydro-generator shaft insulation multi-parameter monitoring method and system, and the method comprises the steps: employing a common excitation proportion method, introducing a high-frequency excitation current source through a grounding brush, loading a high-frequency voltage on the basis of a shaft voltage, respectively detecting an oil film voltage and an insulation pad voltage, and calculating a voltage amplitude ratio, analyzing oil film capacitance and insulation capacitance based on the high-frequency signal; a co-excitation polling method is adopted, high-frequency excitation current paths are sequentially switched through a polling device, high-frequency current flows through different impedance branches, high-frequency and low-frequency voltage signals are separated through a frequency-selecting filter, and oil film impedance and insulation impedance are analyzed; an independent excitation method is adopted, a high-frequency excitation source is independently introduced from a bearing bush, a frequency-selecting filter or an impedance converter is combined, independent measurement of oil film impedance and insulation impedance is achieved, and oil film thickness and insulation parameters are calculated. According to the invention, multi-parameter monitoring of bearing insulation can be realized.
Owner:HUANENG LANCANG RIVER HYDROPOWER CO LTD

Ripple signal processing circuit, high-voltage power supply circuit, and high-voltage power supply device

The embodiment of the invention provides a ripple signal processing circuit, a high-voltage power supply circuit and high-voltage power supply equipment, the ripple signal processing circuit comprises a high-pass filter and a voltage follower circuit, the high-pass filter is used for obtaining a voltage input signal and outputting a ripple signal in the voltage input signal, and the voltage follower circuit is used for outputting the ripple signal in the voltage input signal. And the impedance converter is used for receiving the ripple signal, performing impedance conversion and outputting an output signal to an oscilloscope. In the technical scheme, the equivalent resistance of the high-pass filter is equal to the resistance after the internal resistance of the high-pass filter and the resistance of the voltage follower circuit are connected in parallel. Therefore, the equivalent resistance of the high-pass filter is not affected by the internal resistance of the oscilloscope. When the capacitance of the high-pass filter is fixed, the larger the resistance value of the internal resistor of the high-pass filter is, the lower the cut-off frequency of the high-pass filter is, and the frequency of the ripple signal detected by the oscilloscope is lower.
Owner:HUAWEI TECH CO LTD

High-performance tight-coupling phased-array antenna applying frequency-variable impedance matching layer

The invention belongs to the technical field of microwave antennas, and particularly provides a tight coupling phased-array antenna based on an application frequency-variable impedance matching layer, so as to solve the challenges of the existing phased-array antenna in the aspects of dynamic adjustability and environmental adaptability. The three-order Chebyshev impedance converter comprises a reconfigurable surface loaded with a diode, a bow-tie type dipole, a double-Y balun, a three-order Chebyshev impedance converter, a coaxial feed port, a metal floor, a dielectric layer, a grounding metal sheet and a metal chip resistor. The three-order Chebyshev impedance transformer, the chip resistor and the double-Y balun are cascaded to carry out broadband balanced feed on the dipole, and the dielectric constant and the magnetic conductivity of the dielectric substrate are changed through the on-off of the diode, so that the impedance matching and radiation characteristics of the phased-array antenna are improved. According to the invention, dynamic requirements of modern communication and radar systems on antenna performance can be met.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA

Microwave synchronous dielectric conductive perforation and electrodeless ultraviolet continuous running water disinfection device and method

The invention belongs to the technical field of water treatment and wastewater treatment, and provides a microwave synchronous dielectric conduction perforation and electrodeless ultraviolet continuous running water disinfection device and method. The continuous running water disinfection device comprises an electrodeless ultraviolet lamp tube, a microwave source, an air cooling device, a single ridge waveguide, a lampshade and a quartz water pipe; the single-ridge waveguide comprises a single-ridge resonant cavity, the bottom of the single-ridge resonant cavity is provided with a rectangular ridge protruding upwards, and the top of the single-ridge resonant cavity is provided with a strip-shaped gap. The electrodeless ultraviolet lamp tube is arranged along the strip-shaped gap, the quartz water pipe penetrates through the single-ridge resonant cavity, the part, located in the single-ridge resonant cavity, of the quartz water pipe is marked as a disinfection section, and the disinfection section is located above the rectangular ridge and located in the irradiation range of the electrodeless ultraviolet lamp tube; the microwave source feeds microwaves into the single-ridge resonant cavity through the coaxial cable via the waveguide coaxial converter and the impedance converter. According to the invention, the electroporation effect of the continuous flowing water body and the collaborative disinfection of ultraviolet rays can be realized, and the water disinfection effect in the prior art is enhanced.
Owner:SICHUAN UNIV

Imaging element and imaging device

An image sensor (1) includes: a pixel array (40) in which pixels (30) are arranged in a matrix; impedance converter circuits (61) for each column, each of which receives a pixel signal from at least one pixel (30); and an AD converter (64) for each column that converts from analog to digital signals output from the impedance converter circuits (61). The pixel array (40) includes, for each column, N pixel groups (100) each including K or more pixels (30) consecutively arranged in a column direction. Each of the N pixel groups (100) includes a vertical signal line (50) connected to L or more pixels (30) among the K or more pixels. In each column, each of the N vertical signal lines (50) of the N pixel groups (100) is connected to the input of one of the impedance converter circuits (61), and the output of each of the impedance converter circuits (61) is connected to the AD converter (64).
Owner:NUVOTON TECH CORP JAPAN

Solid rocket engine thrust regulation and control system and method based on microwave field

The invention discloses a solid rocket engine thrust control system and method based on a microwave field. The solid rocket engine thrust control system comprises a combustion chamber shell, an annular heat insulation layer arranged around the inner wall of the combustion chamber shell and an annular grain. An empty runner is formed in the middle of the grain; the inner side of the front end of the combustion chamber shell is connected with the heat insulation layer and the igniter; the igniter is mounted on the inner wall of the grain; the gas outlet end of the combustion chamber shell is sequentially provided with a spray pipe convergent section, a spray pipe throat and a spray pipe expansion section. A pressure sensor, a temperature sensor and a force transducer are distributed on the outer side of the expansion section of the spray pipe, and the pressure sensor, the temperature sensor and the force transducer transmit acquired engine performance parameters to a monitoring terminal through electric signals; the monitoring terminal outputs electric signals to the impedance converter and the microwave power supply according to working condition requirements, the intensity of a microwave field is changed, and thrust regulation and control of the solid rocket engine are achieved. The size of microwave output is adjusted according to working conditions, and thrust regulation and control of the solid rocket engine are achieved.
Owner:XI AN JIAOTONG UNIV

Impedor pull rod maintenance assembly frame

The utility model relates to the technical field of impedor pull rods, in particular to an impedor pull rod maintenance group frame which comprises a storage rack, supporting legs are arranged at the bottom end of the storage rack, storage plates are installed on the end sides of the supporting legs, plate cavities are formed in the storage plates, penetrating openings are formed in the middle of the storage rack in a penetrating mode, and the penetrating openings are communicated with the storage plates. A transverse plate is installed on the inner side of the storage rack, a plate cavity is formed in the transverse plate, a plate hole is formed in the bottom end wall of the transverse plate, a guide cavity, a dripping hole and a fixed opening are formed in the top end wall of the storage rack, and a spiral disc is installed on the inner side of the fixed opening. The disc cavity of the storage disc is used for storing lubricating liquid dripped from the plate hole, after the storage disc is full of the lubricating liquid, the storage disc is taken down, the storage disc is poured into the disc storage cavity of the spiral disc, the lubricating liquid is convenient to drip from the guide cavity and the dripping hole again and circulate, the lubricating liquid is convenient to reuse, the fixed opening is in threaded connection with the spiral disc, the fixed opening and the spiral disc are convenient to disassemble and assemble, and the spiral disc is convenient to take down. And the spiral disc is cleaned.
Owner:无锡苏嘉法斯特汽车零配件有限公司

Microelectromechanical system microphone array capsule

The present invention relates to a microelectromechanical system (MEMS) microphone array capsule. In one embodiment, a MEMS microphone includes a MEMS microphone die; an acoustic sensor array formed into the MEMS microphone die, the acoustic sensor array comprising a plurality of MEMS acoustic sensor elements, wherein respective ones of the plurality of MEMS acoustic sensor elements are tuned to different resonant frequencies; and an interconnect that electrically couples the acoustic sensor array to an impedance converter circuit.
Owner:INVENSENSE INC

Method and device for testing a voltage converter

The present invention relates to a device (50) for testing a voltage converter (10, 20), having a frequency response analyzer (60) and an impedance converter (70). The frequency response analyzer (60) is configured to measure an electrical transfer function over a predefined frequency range. The frequency response analyzer (60) has a test signal output (61) for outputting a test signal for the voltage converter (10, 20), a reference signal input (64) for receiving a reference signal which is applied to the voltage converter (10, 20) for the purpose of testing the voltage converter (10, 20), and a response signal input (67) having a predefined input impedance (68) for receiving a response signal from the voltage converter (10, 20). The impedance converter (70) comprises an impedance converter input (71), which has a variable input impedance (72) which can be adjusted to an impedance of the voltage converter (10, 20), and an impedance converter output (75), which is coupled to the response signal input (67) and has an output impedance (74) matched to the input impedance (68) of the response signal input (67).
Owner:OMICRON ELECTRONICS GMBH

Method and device for improving beam duty cycle using colored noise

The present invention provides a method and device for increasing the beam duty cycle by using colored noise, and relates to the field of particle accelerators and signal processing technology. The method comprises: generating a digital noise signal through a finite impulse response filter; converting the digital noise signal into two branch signals of equal magnitude and opposite sign through a phase shifter; and loading the two branch signals onto a transverse electrode plate after each of the two branch signals passes through an attenuator, an amplitude modulator, an impedance converter, and an all-pass network in sequence, thereby obtaining an extracted beam subjected to transverse excitation. The present invention can effectively improve the impact of the current traditional RF-KO sweep mode on beam extraction, making the time structure of the slow extraction beam more uniform, promoting the widespread application of precise point scanning, and improving treatment efficiency.
Owner:LANZHOU KEJIN TAIJI NEW TECH CO LTD +1

Dielectric Spectroscopy Sensor

The present invention includes a transmission line in which a connection line and an impedance converter are connected and a measurement surface which is brought into direct or indirect contact with a measurement target object M and outputs an electromagnetic wave to the measurement target object. The connection line has a first characteristic impedance that is the same as that of a dielectric spectroscopy system. An end on the connection line side of the impedance converter has the first characteristic impedance, and an end on the measurement surface side thereof has a second characteristic impedance different from the first characteristic impedance.
Owner:NIPPON TELEGRAPH & TELEPHONE CORP

Transmission and reception device with broadband high-frequency power amplifier, in particular an N-channel Doherty amplifier with active load modulation

The invention relates to a transmission and reception device with a broadband HF power amplifier, in particular an N-way Doherty amplifier with active load modulation. The object of the invention is to provide a high-power transmission and reception device suitable for high-power and broadband applications and having a transmission power of more than 10 Watts to approximately 2000 Watts by means of appropriate design measures in combination with electronic components, starting from a transmission and reception device with a module (GSZ) having a configurable HF high-power amplifier (HPA) that operates between and below two power back-off points and comprises a main power amplifier (DM) with an amplifier core and at least one peak power amplifier (DP1) with an amplifier core, wherein a digital input signal distributor (ET) is provided, which is connected to the input of the main power amplifier (DM) and to the input of the at least one peak power amplifier (DP1) and has a plurality of outputs, and an output combiner connected to the output of the amplifier core of the main power amplifier and the output of the at least one peak power amplifier is provided. This object is achieved according to the invention, in which an additional multiharmonic transformation line (LAH) is provided at the amplifier core output of a main power amplifier (DM) and at the amplifier core output of at least one peak power amplifier (DP1) and a circulator (Z1) connected to the output of an impedance converter (AN1) or an output combiner (C). By means of the circulator (Z1), the upstream main power amplifier (DM) and at least one peak power amplifier (DP1) are protected from overvoltage and overcurrent on the output side, because the circulator (Z1) transfers energy to a collecting resistor (W1) connected to the circulator (Z1). The invention belongs to the field of broadband amplifiers, in particular broadband Doherty amplifier circuits.
Owner:IAD GESELLSCHAFT FUER INFORMATIK AUTOMATISIERUNG & DATENVERARBEITUNG MBH

Broadband dipole antenna and radar system

The utility model provides a broadband dipole antenna and a radar system. The broadband dipole antenna comprises a dielectric substrate, a first radiation oscillator and a first impedance converter which are arranged on the top layer of the dielectric substrate, a second radiation oscillator and a second impedance converter which are arranged on the bottom layer of the dielectric substrate, and an antenna interface, the first end of the first impedance converter is connected with the signal end of the antenna interface, and the second end of the first impedance converter is connected with the feeder line end of the first radiation oscillator; the first end of the second impedance converter is connected with the grounding end of the antenna interface, and the second end of the second impedance converter is connected with the feeder line end of the second radiation oscillator; the first radiation oscillator and the second radiation oscillator are arranged in a left-right axial symmetry mode, and the first radiation oscillator and the second radiation oscillator are both of a gradual change structure. According to the antenna, the radiation oscillator is of a gradual change structure, resonance can be achieved in a wide frequency range, the working frequency range of the antenna is widened, and the percentage bandwidth of the antenna is effectively improved.
Owner:南昌理工学院

Broadband radio frequency voltage sampling device based on magnetic alloy material

The invention relates to the technical field of synchronous particle accelerators, and provides a broadband radio-frequency voltage sampling device based on a magnetic alloy material, and the device comprises a capacitance voltage division circuit, one end of which is used for connecting a radio-frequency high-voltage end; the multiple is used for adjusting the sampling ratio; one end of the broadband impedance converter is connected with the other end of the capacitance voltage division circuit; the broadband impedance transformer comprises a first magnetic alloy ring and a first multi-core twisted wire; and the radio frequency N-type connector is connected with the other end of the broadband impedance converter, and the radio frequency N-type connector is a voltage sampling output port. According to the broadband radio frequency voltage sampling device based on the magnetic alloy material provided by the invention, the first magnetic alloy ring has very high magnetic conductivity and has a relatively low quality factor Q value, so that the broadband radio frequency voltage sampling device has an excellent broadband, and the low-frequency band characteristic of the impedance conversion circuit is greatly improved; the problem of broadband of a radio frequency voltage sampling circuit and the problem of poor performance of a low frequency band are well solved.
Owner:INST OF MODERN PHYSICS CHINESE ACADEMY OF SCI

Impedance converter and distributor

To provide an impedance converter capable of obtaining satisfactory characteristics in a wide band.SOLUTION: With the impedance converter 1 in which the low-band impedance converting circuit 12 and the high-band impedance converting circuit 11 are connected in parallel between the input terminal IN and the output terminal OUT, and with a circuit configuration in which the phase of the pass characteristic of the high-pass filter formed by the high-band impedance converting circuit 11 is delayed with respect to the phase of the pass characteristic of the low-pass filter formed by the low-band impedance converting circuit 12, the phases of the pass characteristics can be matched when the frequency bands are combined. As a result, an impedance converter having favorable impedance conversion performance in a wide band is realized.SELECTED DRAWING: Figure 1
Owner:NIPPON ANTENNA CO LTD

An ultra-wideband cavity filter

The embodiment of the present invention relates to the field of microwave communication technology and discloses an ultra-wideband cavity filter, comprising: a first RF coaxial connector, a second RF coaxial connector, a housing cavity, a single-ridged waveguide body disposed in the housing cavity, a first impedance converter, a second impedance converter, a first stripline, and a second stripline; multiple pairs of symmetrical grooves are disposed on both sides of the single-ridged waveguide body; one end of the single-ridged waveguide body is connected in sequence to the first impedance converter, the first stripline, and the first RF coaxial connector, and the other end is connected in sequence to the second impedance converter, the second stripline, and the second RF coaxial connector; the first RF coaxial connector and the second RF coaxial connector are respectively fixed at both ends of the outer surface of the housing cavity. Through the above method, the cavity filter realized by the embodiment of the present invention not only improves the operating frequency bandwidth and power capacity, but also makes the installation and tuning of the equipment more convenient.
Owner:SHENZHEN PUFANG ZHONGZHI PRECISION TECH CO LTD

A low-frequency, broadband, high-power, compact impedance converter

The present invention relates to a low-frequency, broadband, high-power, compact impedance transformer, comprising a rectangular coaxial impedance transformer and a coaxial quick-connect connector connected to the rectangular coaxial impedance transformer. The rectangular coaxial impedance transformer comprises a base plate and a cover plate, which are fixedly connected by bolts. An inner conductor is provided at the upper end of the base plate, and an interface is provided at the lower end of the base plate, through which the coaxial quick-connect connector connects to the inner conductor. The present invention employs a rectangular coaxial coiled structure for the impedance transformation section of the inner conductor to reduce its axial length. The inner conductor is disposed on a dielectric plate C and secured via a dielectric plate D, thereby resolving the difficulty of mechanically processing the dielectric plate D. Furthermore, the overall compact design meets the client's requirements for a smaller installation space.
Owner:AVIC FORSTAR S&T CO LTD

An ultra-wideband power amplifier based on reactive harmonic network and its design method

The present invention discloses an ultra-wideband power amplifier based on a reactive harmonic network and a design method thereof, comprising an input matching circuit, a low-order harmonic control network, a high-order harmonic reactance control network, and a fundamental wave output matching circuit, wherein the low-order harmonic control network is used to short-circuit the second harmonic and open the third harmonic; the high-order reactive harmonic network is composed of a series-parallel short stub and an impedance converter, so that the high-order harmonic impedance is equivalent to the fundamental wave impedance. Compared with the prior art, the present invention adopts a reactive harmonic network to transform the reactance value of the high-order harmonic, compensate its resistance value, and make its impedance equivalent to the fundamental wave impedance, so as to better control the high-order harmonics at the output end, and can achieve matching within a wide frequency band, overcoming the problem that the power amplifier spans an octave and the fundamental wave and the harmonic have different impedances at the same frequency; the low-order harmonic control network not only ensures the efficiency of the power amplifier, but also avoids the overlap of the second and third harmonics with the high-order harmonics.
Owner:广州旭诚信息技术有限公司

Electrical amplifier

An exemplary embodiment of the invention relates to an electrical amplifier (10) comprising a differential preamplifier (PA) having a first output port and a second output port, and a downstream amplifier stage (DAS) having a first output unit and a second output unit; wherein the first output unit is connected to the first output port of the differential preamplifier (PA) and the second output unit is connected to the second output port of the differential preamplifier (PA); and wherein a negative impedance converter is electrically located in at least one of said differential preamplifier (PA) and said downstream amplifier stage (DAS).
Owner:SKOYA LTD

Pseudo-Doherty load modulation balanced amplifier

The present application relates to a pseudo-Doherty load modulated balanced amplifier (PD-LMBA), and to a mobile communication base station comprising the PD-LMBA. The present application relates to a load modulated balanced amplifier (PD-LMBA) and to a mobile communication base station comprising the PD-LMBA. According to the invention, the PD-LMBA comprises a phase offset unit comprising at least one shunt series circuit connected to the ground, each shunt series circuit comprising an impedance transformer and a termination circuit arranged between the impedance transformer and the ground, the termination circuit is configured to present an RF short circuit to the impedance transformer at a first frequency within or near the frequency band, where the impedance transformer is configured to transform the RF short circuit to an RF open circuit at the first frequency. The phase offset unit further comprises at least one parallel resonant circuit arranged between the input and the output of the phase offset unit, where an impedance of the at least one parallel resonant circuit corresponds to an RF open circuit at a second frequency outside the frequency band. The first frequency is closer to a center frequency of the frequency band than the second frequency.
Owner:AMPLEON NETHERLANDS

An amplitude-adjustable 10ps ultra-fast differential Gaussian pulse generator

ActiveCN115085697BPulse generation by semiconductor devices with avalanche effectBandpass filteringPulse shaping circuits
The present invention relates to an ultra-fast 10ps differential Gaussian pulse generator with adjustable amplitude. The generator comprises a pulse shaping circuit, a high-voltage conversion circuit, a low-voltage conversion circuit, a high-voltage regulation circuit, an avalanche circuit, a first low-voltage regulation circuit, a first step circuit, a second low-voltage regulation circuit, a second step circuit, a differential circuit, a bandpass filter, and an impedance converter. The ultra-fast picosecond differential Gaussian pulse generator disclosed herein utilizes avalanche technology, with the adjustment circuit added to the avalanche circuit to achieve adjustable pulse amplitude.
Owner:CETC (QINGDAO) RADIO TECH CO LTD

A new balanced-unbalanced matching impedance converter device

The present invention discloses a novel balanced-unbalanced matching impedance converter device. The device comprises impedance converters with eight impedance conversion ratios, a fixing plate, and a PVC chassis. The impedance converter for each impedance conversion ratio comprises a ferrite core transformer, an input resonant capacitor, an output resonant capacitor, an unbalanced input terminal, a balanced output terminal, a PVC pipe, and a PVC pipe sleeve. The ferrite core transformer is composed of a toroidal core, a primary winding, and a secondary winding. The toroidal core is composed of multiple stacked toroidal manganese-zinc ferrite cores, and the primary and secondary windings are each wound with multiple strands of silver wire. An input resonant capacitor is connected in parallel between the primary windings, and the unbalanced input terminal is an N-type female connector. An output resonant capacitor is connected in parallel between the secondary windings, and the balanced output terminal is a 4mm banana connector. The present invention can achieve eight types of impedance conversion.
Owner:GUANGDONG INST OF METROLOGY

Device and method for testing ideal shielding coefficient of multi-frequency cable

The invention belongs to the technical field of cable shielding coefficient testing, and relates to a multi-frequency cable ideal shielding coefficient testing device and method. The device comprises a digital level oscillator, a power amplifier, an impedance converter, a fixed straightening device, an interference level digital frequency-selecting electric meter and an induction level digital frequency-selecting electric meter. Hardware fitting units are arranged at the two ends of the fixed straightening device, and each hardware fitting unit comprises a cable connecting hardware fitting, a current testing hardware fitting and a voltage testing hardware fitting; during testing, the cable connection fitting is connected with the current testing fitting; one end of the impedance converter is connected with one current test fitting, and the other end of the impedance converter is connected with the other current test fitting; one end of the interference level digital frequency-selecting ammeter is connected with one voltage test fitting, and the other end is connected with the other voltage test fitting; one end of the induction level digital frequency-selecting ammeter is connected with the voltage test fitting, and the other end is connected with the to-be-tested cable. The problem that the ideal shielding coefficient of the multi-frequency cable cannot be tested is solved.
Owner:XIAN XIDIANGUANG CABLE CO LTD +1

Semiconductor device and doherty amplifier circuit

The invention provides a semiconductor device and a Doherty amplifier circuit. The semiconductor device includes: a package (30) including a base and an output lead; a first semiconductor chip (40a) including a main amplifier that amplifies the first signal and a first output pad that outputs the amplified first signal; a second semiconductor chip (40b) including a first peak amplifier that amplifies a second signal and a second output pad that outputs the amplified second signal; a third semiconductor chip (40c) including a second peak amplifier that amplifies a third signal and a third output pad that outputs the amplified third signal; the first end of the first impedance converter is electrically connected to the first output bonding pad and the output lead, and the second end of the first impedance converter is electrically connected to the second output bonding pad and the third output bonding pad; a first matching circuit that matches the impedance of the first output pad and the impedance of the first terminal with each other; and a second matching circuit matching the impedance of the second output pad and the impedance of the second terminal with each other.
Owner:SUMITOMO ELECTRIC DEVICE INNOVATIONS

RF generating device and semiconductor manufacturing apparatus including the same

A radio frequency (RF) generating device for generating RF output signals is provided. The RF generating device includes: a controller configured to generate an RF control signal and a gain control signal; a plurality of RF signal generators, each RF signal generator being configured to generate an RF signal having at least one of a frequency and a phase determined based on the RF control signal; a plurality of RF amplification modules, each RF amplification module being configured to receive the RF signal generated by a corresponding RF signal generator and generate an RF amplification signal by controlling a gain of the RF signal based on the gain control signal; an RF switch module configured to select at least one of the RF amplification signals generated by the RF amplification modules and generate an RF output signal in a form of a multi-level pulse based on the selected at least one of the RF amplification signals; and an impedance converter connected to an electrode of an external load and configured to convert a load impedance into a target impedance having a target range, the load impedance being an impedance of the external load.
Owner:SAMSUNG ELECTRONICS CO LTD

A gradual impedance transformer and a method of processing the same

This invention relates to the field of graded impedance converter technology, and more particularly to a graded impedance converter and its processing method. The graded impedance converter includes: a graded section consisting of a beveled outer conductor and a core wire passing through the interior of the beveled outer conductor, and an assembly section disposed at one end of the graded section. The processing method includes: mixing and curing polytetrafluoroethylene (PTFE) dispersion powder with an extrusion aid to form a blank; extruding the blank through an annular gap while simultaneously coating the inner conductor to form a wet blank insulation layer; during the extrusion process, adjusting the extrusion speed according to the temperature anomaly region, adjusting the preheating temperature according to the interface distance between the rigidity anomaly region and the inner conductor, and compensating the extrusion pressure of the annular gap according to the vibration intensity and the area of ​​the rigidity anomaly region; subsequently, drying, sintering, copper tube drawing and beveling, and assembly are performed to obtain the graded impedance converter. This invention achieves continuous impedance transformation of the graded impedance converter.
Owner:嘉兴翼波电子有限公司

Impedance converter of network cable analyzer

The utility model relates to the technical field of network cable analyzer calibration, in particular to an impedance converter of a network cable analyzer, which comprises two RJ45 adapter interfaces, four N-type radio frequency interfaces and four impedance conversion modules, each N-type radio frequency interface is connected with the input end of one impedance conversion module, and the other N-type radio frequency interface is connected with the output end of the other impedance conversion module. The output end of each impedance conversion module is connected with the two RJ45 adapters respectively; the impedance conversion module comprises a first balun transformer, a second balun transformer and a third balun transformer, the first balun transformer is connected with the second balun transformer and the third balun transformer in sequence, the first balun transformer is used for achieving impedance conversion and conversion of unbalanced end signals and differential balance signals, and the second balun transformer is used for achieving differential balance signals. And the second balun transformer and the third balun transformer are used for dividing one path of input into three paths of output. According to the utility model, broadband measurement requirements of calibration of a network cable analyzer can be met, full-project calibration of different regulation requirements can be completed, and the problem of characteristic impedance matching of 100 omega or 150 omega of the characteristic impedance of a twisted pair is solved.
Owner:GUANGZHOU GRG METROLOGY & TEST CO LTD +2

A KAQV multi-frequency shared power distributor

The invention discloses a KAQV multi-frequency shared power distributor, which belongs to the field of waveguide technology. It includes an axial multi-frequency shared waveguide and four sidewall branch waveguides. The axial multi-frequency shared waveguide is a signal transmission channel for the Ka transmitting frequency band and the QV frequency band. The sidewall branch waveguides for transmitting the Ka receiving frequency band signals are distributed along the axial direction, and the sidewall branch waveguides are distributed in a four-way symmetrical manner relative to the axial multi-frequency shared waveguide. Each sidewall branch waveguide includes a filter and a step waveguide impedance converter, and the filter is a two-stage filter cascade design. The present invention has the characteristics of large relative bandwidth, low cross-polarization, and low standing wave ratio, and has a compact structure and is easy to process. The present invention solves the problem of difficulty in suppressing high-order modes when used over 2 times the frequency and the problem of the Ka-band structure being too small to be processed, and at the same time completes low-frequency broadband impedance matching. In a bandwidth close to 3 times the frequency, it can effectively improve the influence of high-order modes on the radiation pattern of the feed system and reduce the level of antenna cross-polarization, which is suitable for engineering promotion.
Owner:THE 54TH RESEARCH INSTITUTE OF CHINA ELECTRONICS TECHNOLOGY GROUP CORPORATION

High frequency plasma light source

This invention relates to a high-frequency plasma light source (1), wherein, in the operating state, a quasi-capacitively coupled plasma is formed by at least two plasma anchors (6, 7), thus the plasma region with the highest energy density is spatially decoupled from the plasma anchors (6, 7). The high-frequency plasma light source (1) includes: - a pressure chamber (5) containing a gaseous medium, in the operating state, a luminescent plasma is formed within the pressure chamber; - an impedance converter (4) assembly connected to the pressure chamber (5) and including a coupling pin (8) for coupling electromagnetic waves into the high-frequency plasma light source (1) and having an internal guide... The inner conductor (9) and the outer conductor (9b) are coaxial conductors (9a) and (9b), wherein a dielectric pressure seal (13) and at least one conductive or dielectric connector (10, 12) are provided between the inner conductor (9a) and the outer conductor (9b), an inner conductor plasma anchor (6) extending into the pressure chamber (5) and electrically and mechanically connected to the inner conductor (9a) of the coaxial conductor (9), and an outer conductor plasma anchor (7) having a first end (7a) located in the pressure chamber (5) and a second end (7b) mechanically connected to the inner surface of the pressure chamber (5).
Owner:NYANCY GMBH