5417results about "Multiple-port networks" patented technology

The invention provides a self-adaptive impedance matching method and system of a microwave frequency band. The method comprises the following steps: performing initial impedance measurement on a plurality of microwave component ports to obtain a complex impedance parameter as a matching reference; in the operation process, a current impedance state and a reflection coefficient are collected through a reflection monitoring mechanism, and a dynamic impedance state vector is constructed; inputting the state information into an adaptive algorithm module, generating a matching parameter vector and configuring an adjustable device to realize real-time adjustment of a matching network; calculating a matching error according to the current reflection state and a target reference value, and driving parameters to be iteratively updated; after the matching precision requirement is met, the final parameters are loaded to the controller to complete actual configuration; meanwhile, the system periodically collects environmental parameters and matching effects, and dynamically judges whether rematching is needed or not so as to maintain long-term stable operation of the system. The method has the capabilities of automatic sensing, closed-loop optimization and environmental change adaptation, and can improve the matching efficiency and signal transmission quality of a microwave system under multi-band and high-dynamic working conditions.

A phase shifter includes an active matrix transistor array. Each transistor of the active matrix transistor array is configured to control a voltage bias across a corresponding voltage-controlled capacitor of voltage-controlled capacitors to control a capacitance of the corresponding voltage-controlled capacitor. The phase shifter further includes signal channels. Each signal channel of the signal channels has a first end and a second end and is AC coupled at a point between the first end and the second end to one or more of the voltage-controlled capacitors. The phase shifter is configured to control a phase shift applied to each corresponding signal channel of the signal channels by setting the voltage bias across each of the one or more of the voltage-controlled capacitors coupled to the corresponding signal channel.

The invention provides a broadband Doherty power amplification circuit based on a coupler balun active load modulation network, which belongs to the field of radio frequency integrated circuits and comprises an input matching network, a self-adaptive biasing circuit, a main power amplifier, an auxiliary power amplifier and an output matching network. And the output matching network consists of two pairs of differential couplers and a section of 30-degree transmission line, so that the Doherty power amplifier has a broadband active load modulation function. Under a 65-nanometer CMOS (complementary metal-oxide-semiconductor transistor) process, in a working frequency range of 40% of relative bandwidth, the power back-off characteristic is good, and the back-off efficiency is high in a broadband range.

An electronic decoder for decoding of block coded wireless communications signals. The electronic decoder comprises at least two electrically interconnected analogue crossbar arrays (1110, 1120) of memristors. An electrical interconnection (1115) between a column (1111) of an analogue crossbar array of the at least two electrically 5 interconnected analogue crossbar arrays (1110, 1120) and a row (1121) of a following analogue crossbar array of the at least two electrically interconnected analogue crossbar arrays (1110, 1120) comprises a current-to-voltage converter (1101). A first analogue crossbar array (1110) of the at least two analogue crossbar arrays (1110, 1120) comprises at least a first row of memristors (1112a) with a single input and a 10 respective output for each column of memristors.

The invention discloses a reconfigurable filter and a design method, relates to the technical field of radio frequency filter chips, and solves the problems that a tuned filter in the prior art cannot realize continuous adjustability, and is large in area and size and high in design complexity. The method comprises the following steps: determining an initial circuit of a quasi-elliptical filter network comprising a first LC structure and a second LC structure which are connected in series; calculating a first capacitance range of a variable capacitor in the first variable capacitor module according to a low-pass filtering network in the initial circuit; calculating parameters of each component in the low-pass filter network equivalent to the high-pass filter network through a frequency conversion method; calculating a second capacitance range of a variable capacitor in a second variable capacitor module according to the high-pass filtering network; optimizing the initial circuit of the reconfigurable filter according to the first capacitance range and the second capacitance range to obtain a reconfigurable filter circuit; the effect of adjusting the upper limit and the lower limit of the frequency by adjusting the voltage is achieved, and the circuit complexity is low.

A multilayer filter includes: an element body formed by laminating a plurality of insulator layers; a first inductor and a second inductor; and a wall portion disposed between the first inductor and the second inductor and grounded, wherein at least the second inductor is a vertical winding type inductor of which a winding axis extends in a direction orthogonal to a laminating direction in which the plurality of insulator layers are laminated, a penetrating portion penetrating in a facing direction in which the first inductor and the second inductor face each other is formed in the wall portion, and a size of the penetrating portion in the laminating direction is larger than a size of one insulator layer.

An apparatus and method for performing closed-loop multiple-output control of radio frequency (RF) matching for a semiconductor wafer fabrication process is provided.

A quadrature coupler includes four ports, four inductors, and six capacitors. The first through third capacitors are coupled in series between the first and fourth ports. A first intermediate node is between the first and second capacitors. A second intermediate node is between the second and third capacitors. The fourth through sixth capacitors are coupled in series between the second and third ports. A third intermediate node is between the fourth and fifth capacitors, and a fourth intermediate node is between the fifth and sixth capacitors. The first inductor is coupled between the first and second ports. The second inductor is coupled between the first and third intermediate nodes. The third inductor is coupled between the second and fourth intermediate nodes. The fourth inductor is coupled between the fourth and third ports. Variable tuning networks may be coupled between the first and fourth ports and the second and third ports.

The invention discloses an impedance matcher, a radio frequency power supply system and a plasma source system. The impedance matcher comprises an impedance matching module, a control module and a plurality of adjustable capacitor modules which are connected in parallel, the first end of each adjustable capacitor module is electrically connected with the first end of the impedance matching module, and the second end of each adjustable capacitor module is grounded; each adjustable capacitor module comprises an adjustable capacitor unit and a switch unit which are connected in series; the control module is used for controlling the switch unit in the at least one adjustable capacitor module to be switched on and controlling the switch unit in the at least one adjustable capacitor module to be switched off when the load is in the current impedance; and the capacitance value of the adjustable capacitor unit in the adjustable capacitor module where the at least one disconnected switch unit is located is adjusted according to the next impedance of the load. According to the invention, impedance matching between the radio frequency power supply module and the load can be realized while the impedance of the load is changed, and impedance matching can be quickly realized.

The invention discloses a power adapter parameter dynamic optimization method for prolonging the service life of equipment, and relates to the technical field of adapter performance optimization, and the method comprises the steps: monitoring and recording the output voltage, current and power factor parameter changes of a power adapter in real time under static and dynamic load conditions by using a test instrument; identifying the trend and reason of abnormal parameter change; performing thermal design optimization and temperature management on the power adapter; performing over-power and over-current limitation on the pulses one by one; introducing a power factor correction circuit; optimizing the switching frequency and the design of an output filter; a load line adjusting circuit is introduced, and space is reserved for dynamic ripples when output current jumps; and evaluating whether the optimization effect reaches an expected target or not. By introducing the power factor correction circuit and the load line adjustment circuit, the power factor of the power adapter is improved, the harmonic pollution is reduced, the stability of the output voltage of the power adapter is improved, and the performance of the power adapter under the dynamic load condition is improved.

Various embodiments provide an antenna assembly and associated systems, devices, and methods. The antenna assembly may include two or more antennas, including a first antenna and a second antenna, coupled to a ground plane. The antenna assembly may further include an isolation network coupled to the ground plane between the first and second antennas. The isolation network may include a conductive structure between conductive antenna portions of the first and second antennas, and an isolation circuit coupled between the conductive structure and the ground plane. The isolation circuit may include a resistor, an inductor, and / or a capacitor (e.g., coupled in parallel with one another). Other embodiments may be described and claimed.

An IPD high-selectivity band-pass filter based on a weak coupling transformer technology comprises an LC parallel resonance circuit, an LC series resonance circuit, an LC parallel resonance circuit and a fourth capacitor C4, and inductors in the LC parallel resonance circuit and inductors in the LC parallel resonance circuit have a weak transformer coupling relation; the coupling coefficient required by the weak coupling transformer provided by the invention is very small and can be realized in a mode of adjacently placing metals on the same layer, so that the structural complexity of the filter is effectively reduced; the band-pass filter is based on an IPD technology, an extra decoupling equivalent inductor is introduced through a weak transformer coupling technology, the extra decoupling equivalent inductor and a parallel capacitor which is connected between the input end and the output end of the filter in a bridging mode form a new resonance path, and a transmission zero point is introduced into an upper stop band and a lower stop band of the filter respectively to improve the selectivity of the filter. According to the invention, the selectivity of the filter can be effectively improved on the premise of not additionally introducing an inductance element and not increasing the order of the filter.

The invention relates to an electromagnetic interference (EMI) filter (100), having line-side terminals (L1-L3) for connecting to an electric supply(S) and load-side terminals (L1′-L3′) for connecting to a load device (L), the EMI filter (100) comprises a load-side passive EMI filter stage (1) connected 5 to the load-side terminals (L1′-L3′) and is configured to suppress common-mode and differential-mode noise. The EMI filter (100) also comprises a line-side active EMI filter stage (3) connected to the line-side terminals (L1-L3) and is configured to suppress differential-mode noise, and at least one intermediate active EMI filter 10stage (2) located between the load-side EMI filter stage (1) and the line-side EMI filter stage (3), configured to suppress common-mode noise. The invention relates also to a method for manufacturing the EMI filter (100).

In order to solve the problem that quick response and distortionless recording of ultrahigh-frequency partial discharge signals are difficult to realize when accidental pulses are generated in the prior art, the invention relates to a dual-channel parallel processing architecture for ultrahigh-frequency partial discharge signals, which comprises a signal cloning circuit and a signal processing circuit, the ultrahigh-frequency partial discharge module is used for receiving ultrahigh-frequency partial discharge signals and synchronously outputting the ultrahigh-frequency partial discharge signals as first target signals and second target signals after lossless copying; the low-gain channel circuit is used for performing buffer transmission for maintaining an original bandwidth and a dynamic range on the first target signal to generate a first gain signal; the high-gain channel circuit is used for performing gain amplification on the second target signal to generate a second gain signal; the digital signal processing unit is used for performing synchronous clock control on the low-gain channel circuit and the high-gain channel circuit; and the FPGA chip is integrated in the digital signal processing unit and is used for performing fusion splicing processing on the first gain signal and the second gain signal based on a waveform fusion splicing algorithm and generating a fusion signal.

The invention provides a multiplexer and a detector. The multiplexer comprises a dielectric substrate, a connecting structure and a plurality of band-pass filters with different working frequencies. A conductive film layer is arranged on the plane of one side of the dielectric substrate and comprises a signal line and a grounding plate located on the side edge of the signal line. The connecting structure is arranged on the conductive film layer and comprises a main branch and a plurality of branches, and the main branch is connected with the branches and serves as an input port of the multiplexer. And the plurality of band-pass filters with different working frequencies are connected with the signal line and the grounding plate. Each band-pass filter comprises a first port and a second port, the first port is connected with the corresponding branch, and the second port serves as an output port of the multiplexer. The signal line, the grounding plate, the connecting structure and the band-pass filter can be located on the same side plane of the dielectric substrate, metal loss and radiation loss are reduced, and integration with other components of the detector is facilitated.

Embodiments disclosed herein include an apparatus that includes a radio frequency (RF) power supply, and a power splitter electrically coupled to the RF power supply. In an embodiment, the apparatus includes a plurality of impedance matches electrically coupled to the power splitter, where the power splitter is configured to split RF power from the RF power supply in order to supply the RF power to each of the plurality of impedance matches. In an embodiment, the apparatus further includes a plurality of chambers, wherein each chamber is electrically coupled to a different one of the plurality of impedance matches.

A method of adjusting an impedance of a power amplifier of a radio frequency system for matching with an antenna switch die is disclosed. In one aspect, the method includes connecting the power amplifier to the antenna switch die via an impedance adjustment circuit, the impedance adjustment circuit including an input node, an output node, a plurality of electrical components arranged between the input node and the output node, and at least one switch configured to selectively electrically connect at least one of the electrical components to the input node and the output node. The method further includes determining an Error Vector Magnitude of the radio frequency system for each of a plurality of states of the at least one switch, and controlling the at least one switch to enter the state of the plurality of states that minimizes the Error Vector Magnitude of the radio frequency system.

The present invention relates to a millimeter-wave low-pass / high-pass reconfigurable filter, comprising a series-parallel reconfiguration structure, a passband compensation inductor, and a ground-direct connection reconfiguration structure, capable of achieving the interchange of a passband and a stopband of the filter in two modes, reconfigurable output in both high and low bands, low loss at the passband and good mirror signal suppression at the stopband, and hardware reuse. The millimeter-wave low-pass / high-pass reconfigurable filter of the present invention has a simple circuit structure, and is suitable for use in a multi-band millimeter-wave reconfigurable transceiver.

An amplifier circuit includes a high frequency input terminal and a high frequency output terminal, amplifiers, an output transformer having an input-side coil and an output-side coil, inductors, and a bypass capacitor. An output end of the amplifier is connected to one end of the input-side coil and one end of the inductor. An output end of the amplifier is connected to the other end of the input-side coil and one end of the inductor. The other end of the inductor, the other end of the inductor, and one end of the bypass capacitor are connected to a midpoint of the input-side coil. One end of the output-side coil is connected to the high frequency output terminal.

In a filter device including at least one acoustic wave resonator, the acoustic wave resonator includes a piezoelectric film having a piezoelectric property and an interdigital transducer electrode that is positioned on an upper surface of the piezoelectric film and that includes a plurality of electrode fingers. When a value double a pitch of the plurality of electrode fingers is defined as λ and a duty of the plurality of electrode fingers is defined as d, a thickness T of the piezoelectric film satisfies formula (1) below. The filter device has a second attenuation pole by using sub-resonance of the acoustic wave resonator on a high-frequency side of a passband of the filter device. 0.154λd≤T≤0.264λd(1), where λd satisfies formula (2) below: λd=λ / (−0.6111×d2−0.1792×d+1.2449) (2).

A matching circuit, a radio frequency front-end circuit, a radio transceiver apparatus, and an electronic device are provided. The radio frequency front-end circuit includes a low noise amplifier and a power amplifier each coupled to an antenna through a matching circuit. The matching circuit includes a transformer, a capacitor, a first switch, and a first inductor element. The transformer is coupled to the power amplifier and the antenna. The capacitor is coupled to the transformer and to the low noise amplifier. The first switch is coupled to the capacitor and to the transformer and is grounded. The first inductor element is coupled to the capacitor and to the first switch and is grounded. A resonant network formed by the first inductor element and the first switch enables the radio frequency front-end circuit to in a wide frequency band.

A filter device includes a body, a ground terminal, and resonators in the body and coupled to each other by electromagnetic field coupling. The resonators include a first resonator coupled to an input terminal, a second resonator coupled to an output terminal, and third and fourth resonators. The second resonator is adjacent to the first resonator in a first direction. The third resonator is adjacent to the first resonator in a second direction perpendicular to the first direction. The fourth resonator is adjacent to the third resonator in the first direction. The third and fourth resonators partially share a path to the ground terminal.

A filter device includes a filter circuit including first and second terminals and series arm resonators along a series arm connecting the first terminal and the second terminal, and an additional circuit connected in parallel at least some of the series arm resonators. The additional circuit includes first, second, and third interdigital transducer electrodes. The first interdigital transducer electrode is connected to a first node at one end portion of a series arm resonator having a lowest anti-resonant frequency of the series arm resonators, the second interdigital transducer electrode is connected to a second node having a potential different from a potential of the first node, the third interdigital transducer electrode is connected to a third node having a potential different from the potentials of the first and second nodes, and the first and second nodes are closer to the first terminal than the third node.

The invention discloses a dither signal filtering and sampling method based on a TFLN laser. The method comprises the following steps: step 1, loading a fundamental wave / second harmonic of a low-frequency dither signal into a photo-generated current of an optical module; 2, the photo-generated current signal loaded with the fundamental wave / second harmonic of the dither signal is amplified through an operational amplifier circuit and then is divided into two paths to be output; 3, after the first path of output in the two paths of output passes through a low-pass RC filter circuit, optical power sampling is carried out to monitor optical power, and the second path of output in the two paths of output is divided into a fundamental wave branch and a second harmonic wave branch; 4, enabling the fundamental wave branch and the second harmonic wave branch to pass through a corresponding frequency-selecting filtering and amplifying circuit and a rear-end amplifying and biasing circuit respectively to obtain a fundamental wave signal and a second harmonic wave signal, and outputting the fundamental wave signal and the second harmonic wave signal to an ADC sampling module for sampling. According to the invention, effective sampling of the fundamental wave and the second harmonic wave of the dither is realized.

An electronic component is provided that includes a substrate, an insulator layer expanding over a surface of the substrate, a planar conductor on the substrate or in the insulator layer and expanding in a plane parallel to the surface of the substrate, and an inductor conductor pattern on the insulator layer or in the insulator layer. When viewed in a direction perpendicular to the surface of the substrate, a length in a longitudinal direction of a region in which a region with the inductor conductor pattern overlapping the planar conductor is represented by Ls, and a distance between the inductor conductor pattern and the planar conductor is represented by d, such that Ls / d is 1 or more and 60 or less.

The invention discloses an ultra-wideband double-compensation type phase shifter, which comprises two one-to-two switches, and a reference state branch and a phase shift state branch which are connected between the two one-to-two switches, the reference state branch comprises a magnetic coupling inductor L1, a capacitor C2, a capacitor C3 and two compensation capacitors C1, the capacitor C2 is connected from the center of the magnetic coupling inductor L1 to the ground, and the capacitor C3 is connected from the center of the magnetic coupling inductor L1 to the ground. The capacitor C3 is connected with the magnetic coupling inductor L1 in parallel to form a magnetic coupling all-pass network, the two compensation capacitors C1 are symmetrically connected to the two sides of the magnetic coupling all-pass network in series, the phase shift state branch comprises an inductance type all-pass network and two compensation inductors L4, the inductance type all-pass network comprises an inductor L2, an inductor L3 and two capacitors C4, the inductor L3 is connected to the two capacitors C4 in series in parallel, and the compensation inductors L4 are connected to the two capacitors C4 in parallel. The inductor L2 is connected to the ground at the center of the two capacitors C4 connected in series, the two compensation inductors L4 are symmetrically connected to the two sides of the inductance type all-pass network in series, the compensation capacitors C1 and the compensation inductors L4 can compensate the phase, the phase frequency response change rate is slowed down, and phase shifting under the extremely wide bandwidth is achieved.

A filter multiplexer for variable bandwidth annealing selection is described. The filter multiplexer has multiple pathways, where each pathway comprises a switch and a filter. Each filter has a different cutoff frequency from the other filters. Switches may be cryogenic switches. Each pathway may be communicatively coupled to an external annealing line. Upon receiving a problem, an annealing bandwidth can be selected, set or configured via the multiplexer to operate a quantum processor with a desired annealing schedule. The multiplexer may be used for calibration of a quantum processor by performing a calibration with a large annealing bandwidth, then calibrating the quantum processor by iterating through all available annealing bandwidths from the multiplexer.

The utility model provides a directional coupler and a radio frequency chip, and relates to the technical field of electronic communication. The directional coupler comprises an input port, an output port, a coupling port, an isolation port and an impedance adjusting network, the impedance adjusting network comprises an access switch, an impedance adjusting module and an inductance unit. The impedance adjusting module comprises an adjustable resistor unit and an adjustable capacitor unit which are connected in parallel; one end of the impedance adjusting module is connected to the isolation port through the access switch, and the other end of the impedance adjusting module is connected to the inductance unit; wherein the inductance unit is used for compensating parasitic capacitance in the directional coupler. According to the scheme, the impedance matching and phase characteristics of the directional coupler can be adjusted according to different working frequencies and environmental conditions through mutual cooperation of the access switch, the impedance adjusting module and the inductance unit, so that the directional coupler can maintain good directivity under various working conditions.

Described herewith are an RF filter assembly for processing a coupled RF power originated from a substrate support assembly of a processing chamber, a chucking circuit for the substrate support assembly, and a method for processing the coupled RF power. The RF filter assembly includes a compensation circuit connected to an electrode of the substrate support assembly and configured to receive the coupled RF power and reduce a reflection of the coupled RF power back to the substrate support assembly; and an RF filter block configured to receive signals processed by the compensation circuit and comprising a plurality of RF filters configured to filter out predetermined frequencies of the coupled RF power. The chucking circuit includes the RF filter assembly. The method includes process and operations of the RF filter assembly.

The disclosure relates to a planar balun structure for routing millimetre-wave radar signals. Example embodiments include a planar balun structure (200) for routing millimetre-wave radar signals, the balun structure (200) comprising: a single-ended side (201); a differential side (203); a half-wavelength path (204) connecting the differential side (203) to the single-ended side (201), wherein the half-wavelength path (204) surrounds the single-ended side (201).