401 results about "Signal synthesis" patented technology

The invention provides an unmanned aerial vehicle multi-system navigation decoy system based on intelligent algorithm optimization, and relates to the technical field of unmanned aerial vehicle processing, a sensing module comprises a cognitive radar, a photoelectric / infrared sensor, a magnetic and acoustic sensor and an electromagnetic environment scanning device, and a digital twinning and countermeasure AI module comprises a digital twinning model module and a countermeasure AI engine; the cross-domain multi-source cheating module comprises a multi-system navigation signal synthesis module and a sensor-level cheating module; the reconfigurable intelligent antenna array comprises a metamaterial unit, a real-time beam controller and a biological heuristic intelligent algorithm module, and the system security hiding module comprises an encryption access control unit, a micro-power frequency expansion and hopping unit and a redundant backup and disaster recovery unit. The response time of the system from detection to interference can be remarkably shortened by performing high-fidelity simulation on the flight control logic of the unmanned aerial vehicle and the actual electromagnetic environment in the digital twin environment and combining the hybrid decoy strategy generated by the adversarial AI.

A low voltage ride through control method for a grid-forming inverter based on dynamic internal potential adjustment comprises the following steps: detecting a voltage per unit value of a grid-connected point in real time, and comparing the voltage per unit value with a threshold value to judge a voltage drop event and trigger low voltage ride through control; dynamically calculating active and reactive power reference values through a reactive compensation equation and an active current limiting equation according to the voltage amplitude and the power reference value before falling during the ride-through period; inputting the active reference value into a virtual rotor motion equation to generate a reference phase, and outputting a phase reference signal in combination with a dual-mode phase compensation controller; superposing the reactive reference value with the reference voltage through a reactive voltage regulating ring to generate a voltage amplitude reference signal; synthesizing an internal potential according to the phase and the amplitude reference signal, and obtaining an inductive current reference value through virtual impedance control and current amplitude limiting; and finally, a driving signal is generated through the current inner loop controller and the modulation module. According to the invention, overcurrent can be effectively inhibited, rapid reactive power support is provided, and synchronous stability and smooth transition in a fault period and a recovery process are ensured.

The invention discloses a differential signal synthesis circuit of a double-IQ mixer, which belongs to the technical field of radio frequency microwave testing and comprises two single-ended IQ mixing modules, a 180-degree phase shift module and an in-phase combination module or a power division module. The single-ended IQ frequency mixing module is used for up-converting the single-ended IQ baseband signal to radio frequency or down-converting the radio frequency signal to the single-ended IQ baseband signal; the 180-degree phase shift module is used for converting an input signal into two paths of signals with a phase difference of 180 degrees; and the power division module is used for converting the radio frequency input signal into two paths of signals with the phase difference of 0 degree. According to the invention, the IQ mixer with a differential structure is constructed, so that the microwave band of the IQ mixer is comprehensively improved in the index aspects of local oscillator leakage, even-order component suppression, common-mode interference suppression, signal-to-noise ratio and the like; according to the invention, single-ended IQ mixers with various types and complete frequency bands can be constructed into a differential structure form, and signal indexes in numerous application scenes are improved.

The invention discloses a frequency domain ground penetrating radar transmitting source coding and receiving signal synthesis method and system. The method comprises the following steps: constructing a frequency domain coding continuous wave ground penetrating radar transmitting signal by extracting amplitude and phase information of multiple frequency points of a time domain ultra-wideband transmitting pulse; adopting a fast forward modeling method based on impulse response to realize forward modeling of a coding source emission signal of the typical geoelectric model; in-phase components and orthogonal components of all frequency points are extracted, frequency responses are synthesized into responses of quasi-time-domain transmitted pulses through an inverse Fourier transform method, the high resolution equal to that of time-domain ultra-wideband transmitted signals is obtained, and higher anti-noise performance is achieved. According to the invention, the amplitude phase coding continuous wave transmitting signal is adopted, so that the frequency spectrum shaping of the quasi-time domain pulse of the transmitting frequency spectrum is realized, the resolving power of the synthetic signal is improved, and a theoretical basis is laid for signal synthesis of frequency domain ground penetrating radar hardware design.

The invention discloses a dynamic electromagnetic shielding method for a complex electromagnetic environment and a shielding device thereof, and the method comprises the steps: obtaining real-time voltage data in the complex electromagnetic environment, carrying out the voltage feature analysis, outputting a feature vector of a real-time voltage signal, and analyzing the type of an interference source of a current electric field according to the feature vector, performing interference trend time sequence prediction processing on the feature vector through a pre-trained LSTM model according to the interference source type to obtain a time domain voltage value and a phase deviation value, and performing composite loss coefficient calculation on the time domain voltage value and the phase deviation value to obtain a composite loss coefficient; and performing reverse offset signal synthesis processing on the voltage interference signal according to the calculated composite loss coefficient, performing coil dynamic activation processing on a preset multi-coil array according to the synthesized reverse offset signal, generating a directional offset magnetic field corresponding to the real-time electromagnetic interference, and performing electromagnetic offset shielding on the current electromagnetic interference. According to the invention, transient interference can be responded in time, and the electromagnetic shielding effectiveness can be improved.

This application provides a system for generating a drive signal and a method for generating a drive signal for driving a two-in-one device integrating a first component capable of generating sound and a second component capable of generating vibration. The system includes an audio signal pre-processing module, configured to perform low-frequency filtering and acoustic effect processing on an input signal according to a high-pass filtering parameter to obtain an audio signal; a vibration signal generation module, configured to generate a vibration signal based on an acoustic characteristic of the audio signal or a preset vibration library; a signal synthesis module, configured to superpose the audio signal with the vibration signal to output the drive signal; and an amplitude-limiting control module, configured to determine whether the audio signal and the vibration signal exceeds a maximum allowable range when superposed, and attenuate the audio signal and / or the vibration signal.

The invention discloses a photovoltaic optimization regulation and control method and device based on an MPPT technology, and particularly relates to the technical field of photovoltaic power generation control, and the method specifically comprises the following steps: S1, full-link operation state synchronous collection, S2, DC bus ripple feature extraction, S3, multi-source disturbance quantitative evaluation, S4, cooperative control parameter decision making, and S5, grid-connected signal synthesis modulation. A multi-source disturbance quantitative evaluation system is adopted, the irradiance change gradient, the frequency ratio and the switching noise contribution ratio are subjected to multi-dimensional fusion, a dynamic weight distribution mechanism is established, and parallel optimization of MPPT mode selection, disturbance step length adjustment and PWM phase shift angle is achieved through a cooperative control parameter decision architecture. A response delay bottleneck existing in a traditional serial decision mode is broken through, and a ripple compensation component is dynamically injected while stable output of fundamental current is maintained based on a grid-connected signal modulation strategy of vector synthesis.

The invention discloses an intermediate frequency electro-therapeutic apparatus, which comprises a controller and a waveform synthesis circuit, and is characterized in that the waveform synthesis circuit comprises a first amplitude adjusting circuit, a second amplitude adjusting circuit and a synthesis adjusting circuit, and the controller generates a first PWM signal according to the overall amplitude information; the first amplitude adjusting circuit performs amplitude modulation processing on an input original waveform according to the first PWM signal to generate a first analog waveform signal; the controller obtains amplitude information corresponding to the frequency of the modulation waveform by using the phase accumulator, and generates a second PWM signal; a second amplitude adjusting circuit performs multiplication operation on the second PWM signal and the first analog waveform signal to obtain a second analog waveform signal and obtain an inverted waveform signal; the controller obtains amplitude information corresponding to the frequency of the fundamental frequency waveform by using a phase accumulator, and generates a third PWM signal; and the synthesis adjusting circuit performs multiplication operation on the third PWM signal and the second analog waveform signal or the inverted waveform signal to generate an intermediate frequency treatment waveform.

The invention relates to the technical field of LED illumination control, and discloses a lamp strip brightness control system and method capable of realizing self-adaptive adjustment, and an LED lamp strip. An environment data acquisition module of the system acquires environment illumination intensity data and environment color temperature data in real time to form a multidimensional environment parameter matrix containing a timestamp; a dynamic feature extraction module performs multi-scale decomposition on the matrix, extracts illumination intensity change trend features and color temperature fluctuation features, and constructs dynamic feature vectors; the adaptive decision module calculates a brightness adjustment weight based on the dynamic feature vector, and generates a brightness adjustment instruction in combination with a preset brightness constraint condition; the signal synthesis module converts the brightness adjustment instruction into a pulse width modulation signal, and superposes a high-frequency noise suppression signal to optimize the signal stability; and the driving execution module adjusts the driving current of the LED lamp strip according to the pulse width modulation signal so as to realize self-adaptive brightness adjustment. The system can improve the stability and adaptability of brightness adjustment and improve the visual experience of a user.

The invention discloses a vehicle-mounted CAN bus anti-interference communication system and method based on photocoupling, and the system comprises an anti-interference communication system frame, the anti-interference communication system frame comprises a CAN bus receiving and transmitting module, a photocoupling isolation module, and a signal processing and separating module, the CAN bus receiving and transmitting module is used for receiving and transmitting CAN bus signals, and the photocoupling isolation module is used for receiving and transmitting the CAN bus signals. The photoelectric coupling isolation module is used for realizing transparent conversion of data between an optical signal and an electric signal and realizing electrical isolation of a physical layer while maintaining the integrity of a CAN protocol, and the signal processing and separation module is used for constructing a cooperative processing mechanism of time sequence calibration, differential judgment, logic reconstruction and signal synthesis. According to the invention, based on a physical layer signal isolation mechanism of optoelectronic isolation, a bidirectional independent transmission path of a CAN bus TXD / RXD channel data stream is established, and TXD mapping data and CAN bus effective data in an RXD channel are accurately separated, so that the system reliability in an industrial-grade communication scene can be obviously improved.

The invention discloses an active disturbance rejection controller control method and device, and the method comprises the steps: receiving an actual output feedback signal of a controlled object and a historical output control signal of a controller based on a linear expansion state observer, calculating the total disturbance of a system in real time through a three-order state-space equation, and obtaining a disturbance estimation value; receiving the disturbance estimation value and the control input gain coefficient based on a compensator, calculating a dynamic compensation amount for offsetting the total disturbance of the system, and outputting the dynamic compensation amount to a signal synthesis node; a deviation signal of a set value signal used for defining the target state of a controlled object and a feedback signal actually output by the controlled object is received based on a controller, and an anti-interference basic control signal is generated in combination with the bandwidth of the controller; and subtracting the dynamic compensation amount from the anti-interference basic control signal based on the signal synthesis node to generate an active-disturbance-rejection control amount, outputting the active-disturbance-rejection control amount to a controlled object, and suppressing external interference and internal parameter drift of the controlled object.

The invention relates to the technical field of wireless communication, and provides a power synthesis circuit and a power amplifier. Comprising a first signal input end, a second signal input end, an input impedance matching circuit, a first harmonic suppression circuit, a second harmonic suppression circuit, a first high-pass filter circuit, a second high-pass filter circuit, a low-pass filter circuit and a signal synthesis output end, the low-pass filter circuit comprises a first inductor, a second inductor and a first capacitor; the first end of the first inductor serves as the first input end of the low-pass filter circuit, the first end of the second inductor serves as the second input end of the low-pass filter circuit, the second end of the first inductor is connected with the first end of the first capacitor and the second end of the second inductor and serves as the output end of the low-pass filter circuit, and the second end of the first capacitor is grounded. The power synthesis circuit has the impedance conversion characteristic, and has the advantages of low cost, high isolation, high integration and the like.

The present disclosure proposes a concept of training a machine learning network for use with a ToF camera. Based on a predefined synthetic scene, it is simulated a ground truth time resolved illumination return signal for a light pulse emitted from the ToF camera to the synthetic scene and scattered back from the synthetic scene to the ToF camera. The synthetic scene comprises a plurality of scene points with known distances between each of the scene points and the ToF camera. Based on the ground truth time resolved illumination return signal and a simulation model of the ToF camera, it is then simulated an output signal of at least one ToF pixel capturing the synthetic scene. Based on the simulated output signal of the ToF pixel and the ground truth time resolved illumination return signal, weights of the machine learning network are adjusted to cause the machine learning network to map the simulated output signal of the ToF pixel to an output time resolved illumination return signal approximating the ground truth time resolved illumination return signal.

The invention provides a space optical communication multi-aperture receiving method based on optical and electrical comprehensive synthesis. The number of optical beam combination sub-apertures is intelligently adjusted by adopting densely-arranged multi-aperture optical antennas so as to ensure that light paths and light signals after beam combination are mutually independent; receiving of optical signals and correction of first-order and second-order Zernike aberration are achieved through the optical antenna array with the total number of sub-apertures determined on the basis of the receiving plane; the optical signals pass through the optical beam splitter, one part of the optical signals are input into the coupling energy photoelectric detector to be converted into voltage or current feedback signals to be input into the control module, and the other part of the optical signals are input into the N * 1 self-adaptive light beam synthesis module; coherent beam combination is carried out on the optical signals through the N * 1 adaptive beam combination module to form M paths of mutually independent optical signals; and carrying out direct detection or coherent detection on the M paths of optical signals, converting the M paths of optical signals into M paths of electric signals, and carrying out electrical signal synthesis on the M paths of electric signals. The communication stability is improved, and the independence of the electrical synthesis signal is ensured.

The invention relates to the technical field of neuroacoustics, in particular to a personalized brain wave induced audio generation method and system, and the method comprises the steps: S1, extracting multi-dimensional features of an input audio signal, the extracted dimensions at least comprising a time domain feature, a frequency domain feature, a pitch feature, an emotion feature and a complex feature; s2, on the basis of the multi-dimensional features extracted in the step S1, parameters of four neuroacoustic induction mechanisms are calculated in parallel; and S3, according to the features obtained in the step S1 and the quadruple mechanism parameters obtained in the step S2, signals corresponding to the four mechanisms are fused through a weight distribution strategy and a signal synthesis formula to generate a final brain wave induction audio. The method has the advantages that four mechanisms of rhythm synchronization, harmonic resonance, neural oscillation coupling and binaural beat frequency effect are fused, parameters of all the mechanisms are dynamically adjusted by analyzing music characteristics, and efficient personalized brain wave induction is achieved.

The invention discloses a system and a method for realizing positive and negative weighting in an optical domain, and the system comprises a multi-wavelength light source array which provides multi-channel optical signals, and each wavelength corresponds to an input channel; the adjustable bias photoelectric modulator arrays are in one-to-one correspondence with the light sources, a quiescent working point is biased in a positive / negative slope linear region of a transmission curve through an independent bias circuit, positive and negative weight symbol control is realized, and an input electric signal is loaded; the multi-wavelength micro-ring weighting unit is used for weighting the modulated optical signal by regulating and controlling the transmissivity of the micro-ring; the photoelectric detection unit adopts a single-path detector to receive a composite optical signal and convert the composite optical signal into an electric signal; and the capacitor blocking and signal synthesis unit filters a direct current component, synthesizes an alternating current weighted signal and outputs a real number weighted sum. The system does not need to balance detectors and redundant devices, simplifies hardware architecture, reduces cost and size, reduces power consumption, improves weighting precision and reliability, supports flexible expansion of multi-wavelength channels, adapts to requirements of a large-scale optical neural network, and provides support for optical calculation integration and low-power-consumption landing.

The invention relates to a square wave generation method and system based on a DDS signal transmitter, and belongs to the technical field of digital electronic signal synthesis. The method comprises the following steps: calculating a digital analog signal sampling frequency based on a square wave output frequency set by a user, and obtaining a digital fundamental frequency phase signal according to a phase-locked loop precision range; mapping the digital fundamental frequency phase signal into a sinusoidal amplitude signal according to a digital phase accumulation mechanism to obtain a digital-analog conversion clock, binarizing the sinusoidal amplitude signal, and outputting a square wave output period; dividing a square wave output period into a low level region and a high level region according to the precision range of the phase-locked loop, reading a square wave output frequency set by a user through a random storage address, and outputting a non-offset phase-locked square wave; and constructing an error accumulation self-checking architecture to calculate a frequency control word, and when detecting that the frequency control word has a decimal discarding error, recalculating the frequency control word.

The invention relates to a low-power-consumption clock delay method and system in the technical field of integrated circuits, and the method comprises the following steps: carrying out the phase alignment of a counting clock signal and a to-be-delayed clock signal based on the counting clock signal, and generating a first phase clock alignment signal and a second phase clock alignment signal; extracting rising edge information and falling edge information of the first phase clock alignment signal to obtain a pulse signal; splitting the clock rising edge information and the clock falling edge information to obtain a first pulse filtering signal and a second pulse filtering signal; performing coarse delay on the first pulse filtering signal and the second pulse filtering signal in sequence, and performing signal synthesis processing after coarse delay to obtain a coarse delay clock signal; and performing fine delay on the coarse delay clock signal based on the digital time converter to obtain a fine delay clock signal, thereby solving the problem that the existing delay technology cannot simultaneously realize high delay precision and large dynamic range under the condition of low power consumption.

In a single-message wireless communication network, a system is provided that can instantaneously switch the group formation / integration state from each wireless communication terminal. 【Solution means】Terminals belonging to each group G1 / G2 / G3 include a modulation transmission unit TX that can be switched between a group channel chA / chB / chC and a common channel chZ, a main reception demodulation unit RX1 fixed to the group channel, a sub-reception demodulation unit RX2 fixed to the common channel, muting units 11 and 12 for the outputs of each reception demodulation unit RX1 and RX2, and a signal synthesis unit 13 that synthesizes the outputs of each muting unit 11 and 12, and the output of the signal synthesis unit 13 is used for voice playback. When one terminal transmits an integration / formation command signal on the common channel, other terminals receive it with the sub-reception demodulation unit RX2, perform channel control of the modulation transmission unit TX and adaptive control of each muting unit 11 and 12, and one terminal itself also executes the same control in a transmission event.

The invention provides an aerial electric field measuring device, an aerial electric field measuring method and sounding equipment, the aerial electric field measuring device comprises a shell, a signal processing module, a driving module and a plurality of signal modulation modules, each signal modulation module comprises a sensing assembly and a signal conversion assembly, the first parts of the sensing assemblies are arranged in sensing through holes formed in different wall surfaces of the shell and face different areas of an aerial electric field, and the sensing assemblies rotate according to the same driving electric signal input by the driving module to obtain current signals and rotating speed signals of the different areas in the aerial electric field; the current signal is converted into an alternating current voltage signal through a signal conversion assembly; and the signal processing module is arranged in the shell and is used for synthesizing each alternating-current voltage signal and each rotating speed signal into each component value and synthesizing each component value into an electric field intensity value. According to the invention, each signal modulation module can be prevented from being contacted or collided with a suspended object in the air, and each sensing assembly can rotate at the same time under the condition of consistent rotating speed.

The invention provides a four-plane phased array system based on multi-array-plane dynamic signal synthesis, and belongs to the technical field of wireless communication. The system comprises four symmetrically distributed array planes, each array plane is provided with an independent signal processing module, and the system also comprises a dynamic overlapping region signal synthesis module, a self-adaptive array element activation module, a closed-loop phase correction module and a central synthesis control module. According to the invention, the dynamic signal synthesis of the multi-array-plane overlapping region can be realized, the phase error is reduced, the multi-path interference and nonlinear distortion can be synchronously inhibited, and the array element activation strategy is optimized to improve the response speed and gain stability of the scanning boundary region.

The invention provides a permanent magnet synchronous motor rotating speed control method and system, and belongs to the technical field of motor control. The method comprises the following steps: firstly, constructing a discrete time mathematical model of a motor and an external source system comprising a lumped reference signal and lumped interference, and establishing a composite system model according to the discrete time mathematical model; then, constructing a dimensionality reduction observer to estimate an external source signal, and performing state and input transformation in combination with a regulator equation; thirdly, constructing a constraint set of the transformation system, and decomposing a state variable into a nominal component, a deterministic error component and an uncertain error component; a time-varying constraint tightening set is dynamically constructed according to the error, a model prediction control optimization problem with dynamic tightening constraint is solved online, and a nominal control quantity is obtained; and finally, combining the nominal control quantity and the estimated external source signal to synthesize an actual control voltage. According to the method, interference can be effectively suppressed, system security constraints are strictly ensured, recursion feasibility and closed-loop stability of control are ensured, and the dynamic response speed is increased.

The amplifier circuit includes: a distributor that distributes an input signal into a first signal and a second signal having a phase delayed by 90 DEG from the first signal; a first amplifier which amplifies the first signal and outputs the amplified first signal as a third signal to the first node; a second amplifier which amplifies the second signal and outputs the amplified second signal as a fourth signal to the second node; a first inductor connecting the first node and the second node; a second inductor connecting the first node and the third node; a third inductor connecting a third node to a fourth node for outputting an output signal obtained by combining a fourth signal and a third signal having a phase delayed by 90 DEG from the fourth signal; a fourth inductor connecting the second node and the fourth node; the first capacitor is in shunt connection with the third node; and the second capacitor is connected to the fourth node in a shunt mode, and the inductance of the first inductor and the inductance of the third inductor are larger than the inductance of the second inductor and the inductance of the fourth inductor.

The embodiment of the invention provides a frequency multiplication amplification circuit applied to a phase-locked loop and communication equipment, and the frequency multiplication amplification circuit applied to the phase-locked loop comprises a local oscillator frequency division module which is electrically connected with the output end of the phase-locked loop and is used for receiving a radio frequency signal output by the phase-locked loop and outputting a local oscillator signal according to the radio frequency signal; the frequency mixing module is electrically connected with the output end of the phase-locked loop and the output end of the local oscillator frequency division module, and is used for synthesizing a frequency mixing signal according to the radio frequency signal and the local oscillator signal; wherein the frequency of the frequency mixing signal is greater than that of the radio frequency signal. According to the technical scheme, the frequency multiplication amplification circuit is arranged outside the phase-locked loop, the frequency of the output signal of the phase-locked loop can be amplified, the output frequency of the phase-locked loop can be expanded without changing a core circuit in the phase-locked loop, and the frequency multiplication amplification circuit applied to the phase-locked loop is simple in structure.

Synthetic signal creation and management systems and methods for a vehicle include a cloud-based network configured to generate a software policy for a synthetic signal engine and an electronic control unit (ECU) of the vehicle that is configured to receive the software policy from the cloud-based network, configure the synthetic signal engine based on the software policy, execute the synthetic signal engine to create, based on datapoints for two or more foundational vehicle signals, a synthetic vehicle signal, and output the synthetic vehicle signal. The synthetic vehicle signal could comprises concurrent datapoints for the two or more foundational vehicle signals or datapoints for the two or more foundational vehicle signals, respectively, over a specified duration of time. The synthetic signal engine could also be configured to create the synthetic vehicle signal based further on at least one other previously-created synthetic vehicle signal.

This application proposes an ultra-wideband vector modulation phase shifter and phased array system, comprising a cascaded quadrature signal generation circuit, a quadrature error correction circuit, an I-channel amplitude adjustment circuit, a Q-channel amplitude adjustment circuit, and a quadrature signal synthesis circuit. The quadrature signal generation circuit converts the initial differential signal into an I-channel differential signal and a Q-channel differential signal, and outputs the signals to the quadrature error correction circuit. The quadrature error correction circuit corrects the quadrature error of the received differential signal and outputs the corrected I-channel differential signal and Q-channel differential signal. The I-channel amplitude adjustment circuit and the Q-channel amplitude adjustment circuit adjust the amplitude of the received signal and transmit the adjusted signals to the quadrature signal synthesis circuit. The quadrature signal synthesis circuit combines the two received differential quadrature signals into a target differential signal. The integrated generation and correction circuit structure achieves the expansion of the quadrature signal bandwidth, effectively improving the operating bandwidth of the vector modulation phase shifter.

To provide a communication device capable of encouraging users of communication devices to speak at an appropriate volume.SOLUTION: A communication device 1 includes: a bone conduction microphone 11 that collects the voices of a user and that generates a transmitting signal; a receiver 12 that reproduces sounds based on received signals from an opposite device; a voice transmission line 22 that transmits signals from the bone conduction microphone 11 to the opposite device; a receiving transmission line 24 that transmits the received signal to a receiver 12; and a loopback circuit 25 is placed between the voice transmission line 22 and the receiving transmission line 24 to process the transmitting signals and synthesize the generated sidetone signals with the receive signals. The loopback circuit 25 operates based on any of multiple pre-prepared operating modes to control at least one of the on / off of sidetone and the level of sidetone reproduced by receiver 12 based on the sidetone signal.SELECTED DRAWING: Figure 3

The application discloses a six-tone signal generation circuit system, and relates to the technical field of circuit design, comprising: a quadrature frequency mixing module, a local oscillator driving module, a frequency mixing module, a signal synthesis module and a power amplification module; the quadrature frequency mixing module is used for frequency conversion of input first and second differential quadrature signals to first and sixth output signal frequencies; the signal output by the quadrature frequency mixing module, containing the first and sixth output signal frequencies, is used as the input of the signal synthesis module and the local oscillator signal of the frequency mixing module; the local oscillator driving module is used for amplifying the signal containing the first and sixth output signal frequencies as the local oscillator of the frequency mixing module; the frequency mixing module is used for frequency conversion of input differential signals to second, third, fourth and fifth output signal frequencies; the signal synthesis module is used for synthesizing the above six-tone signals; and the power amplification module is used for wideband amplification of the output six-tone signals and improvement of output power. The circuit system effectively solves the technical problem of multi-tone signal generation in a quantum conditioning circuit.

The present invention discloses a feed network system, belonging to the field of antenna feeding technology. It comprises four 2x2 rectangular arrays of equal-amplitude, 90° network sub-arrays and a power combining network composed of a four-in-one Wilkinson power combiner located at the bottom of the sub-arrays. The four arrays of equal-amplitude, 90° network sub-arrays achieve signal synthesis output through a cascaded four-in-one Wilkinson power combiner. The equal-amplitude, 90° network sub-arrays comprise a first metal ground plate, a first microwave substrate, a first metal signal line, a first prepreg, a second microwave substrate, a second metal ground plate, a second prepreg, a second metal signal line, a third microwave substrate, and a third metal ground plate, stacked sequentially from top to bottom. The microwave substrates are bonded together by prepregs, thereby achieving a feed network capable of connecting four feed points with right-handed equal-amplitude, 90° antenna signals. The present invention reduces the horizontal and lateral dimensions of the feed network, achieving miniaturization and high integration of the antenna array.

The utility model discloses galvanized steel plate heat treatment equipment, belongs to the technical field of steel plate heat treatment, and solves the problems that when the existing steel plate heat treatment equipment is used for carrying out induction heating on a steel plate, the heating quantity is the same when the steel plate with any thickness and width is heated due to the fact that the current is generally kept unchanged. For thin steel plates, the problem of excessive heating may be caused. Comprising a machine shell and a conveying mechanism arranged in the machine shell. When the device is used, a steel plate enters the shell through the conveying mechanism and is subjected to heat treatment through the induction heating coil. The coil control circuit detects the thickness and the width of the steel plate. The width detection module outputs a voltage signal in direct proportion to the width through magnetic field changes. The thickness detection module converts the voltage signal into a voltage signal in inverse proportion to the thickness through a current phase difference. The signals are synthesized to generate comprehensive control voltage, the current amplitude of the induction coil is adjusted, closed-loop control is formed, and excessive heating of the steel plate is avoided.