446 results about "Phase control" patented technology

The invention provides an acoustic coalescence elimination method for hydrogen bubbles in molten aluminum, and belongs to the technical field of molten aluminum bubble elimination. According to the method, sound field collaborative focusing is achieved by arranging a phase control array transducer set in a molten aluminum smelting furnace, primary gathered sound waves and efficient coalescence sound waves are applied in stages according to bubble size evolution in a double-frequency scanning mode, and the hydrogen bubbles in the molten aluminum are eliminated. A target frequency is dynamically adjusted in combination with a bubble resonance frequency optimization model to match the inherent frequency of a bubble, a sound-bubble coupling dynamic tracking system is used for monitoring bubble evolution triggering stage switching in real time, and a sound field focus point dynamically scans and covers a three-dimensional space area through phase delay control. A delay detection method is adopted to eliminate cavitation bubble interference and accurately measure the hydrogen content, sound intensity and frequency parameters are optimized according to a sound field parameter self-adaptive regulation and control model, and the technical problem that hydrogen bubbles in a molten aluminum deep area are difficult to be effectively driven by sound waves and cannot be fully coalesced and eliminated is solved.

The embodiment of the invention provides a method and device for stably controlling an airplane in the auxiliary landing process, computer equipment and a medium, and the method comprises the following steps: judging whether the airplane is in a gliding stage, if so, activating a gliding stage control law, and if not, controlling the airplane to stably control the airplane through the gliding stage control law. The aircraft is controlled through the elevator centering instruction and the horizontal stabilizer automatic trimming instruction until the aircraft quits the gliding stage, and the gliding stage control law is quitted; if the aircraft enters the pull-up stage from the glide stage, activating the leveling stage control law, generating an elevator control instruction based on the steering column displacement and the steering column displacement nonlinear gain through the leveling stage control law, generating a rudder control instruction based on the pedal displacement signal and the pedal displacement nonlinear gain, and controlling the elevator control instruction and the rudder control instruction according to the pedal displacement signal and the pedal displacement nonlinear gain. And controlling the aircraft through the elevator control instruction and the rudder control instruction until the aircraft is grounded. According to the scheme, the landing quality and safety are improved through the staged aircraft auxiliary landing control law.

A clock generator includes a phase controller configured to generate phase control information in response to comparing a phase of an input clock signal against a phase of a division clock signal, and an oscillator configured to generate a plurality of oscillation signals at an equivalent output frequency but different phases, in response to the phase control information and duty control information. A duty cycle converter is provided, which is configured to generate a plurality of output clock signals at the output frequency by adjusting duty cycles of the plurality of oscillation signals, such that the plurality of output clock signals have duty cycles smaller than the duty cycles of the plurality of oscillation signals. A clock divider is provided, which is configured to generate the division clock signal by dividing the output frequency of one of the plurality of output clock signals, such that the division clock signal has a division frequency smaller than the output frequency. A duty cycle calibrator is provided, which is configured to generate the duty control information for adjusting a duty cycle difference of the plurality of output clock signals, in response to detecting duty cycle differences between the plurality of output clock signals.

The invention discloses a current self-adaptive control system and device for electric vehicle charging, and relates to the technical field of electric vehicle charging control. According to the system, through a charging gun and a negative temperature coefficient thermistor array on a cable, temperature data of a preset weak part in an electric vehicle charging loop are collected; preliminarily estimating local resistance of each node based on local voltage drop and loop current data acquired by the paired differential voltage sampling points; the local resistance is corrected according to the temperature data to obtain a corrected resistance value, and after controlled current excitation of a preset time window is applied, the corrected resistance value is verified and corrected in combination with temperature response to obtain a corrected resistance value; and determining the maximum allowable current-carrying value of each sampling node based on the corrected resistance value, taking the minimum value as the maximum safe current-carrying limit of the charging loop, and adopting phase control and / or periodic on-off control within the maximum safe current-carrying limit to realize current-limiting management and control of the charging loop, thereby improving the safety and reliability of the charging process of the electric vehicle.

The invention discloses a fractional frequency division frequency synthesizer with output signal phase synchronization and frequency modulation continuous wave functions, and the basic structure is a charge pump phase-locked loop. Comprising a phase frequency detector, a first charge pump, a second charge pump, a low-pass filter, a voltage-controlled oscillator, a first buffer, a second buffer, a two-frequency divider chain, an IQ undersampling circuit, a local oscillator generator, a programmable multimode frequency divider, a Delta-Sigma modulator (DSM), a first selector, a second selector, a third selector, a tracking phase accumulator, a numerical control oscillator, an accumulation phase difference register and an atan2 logic circuit. The device comprises a main phase control circuit, a phase adjusting circuit, an enabling control circuit, a waveform generator and a serial peripheral interface. The decimal frequency-division frequency synthesizer can be applied to a general-inductance integrated system, ensures that output signals provided by a plurality of decimal frequency-division frequency synthesizers are consistent in phase in a multi-channel radio frequency transceiving system adopting a multi-chip splicing mode, and can also be applied to the general-inductance integrated system as a sensing signal source; and the speed and the distance of an object can be quickly sensed by the high linearity and the quick chirp capability of an output signal. The decimal frequency division frequency synthesizer is applied to a linear frequency modulation continuous wave radar system, initial phase synchronization can be carried out firstly, then frequency continuous modulation is carried out, and measurement errors can be eliminated. In view of functional similarity of partial modules of the synchronous loop and the FMCW loop, such as a phase frequency detector, a charge pump, a voltage-controlled oscillator and the like, the modules can be shared, so that the power consumption and area cost of the system are remarkably reduced.

The invention discloses a split-phase anti-countercurrent control method and system for a three-phase inverter. The method comprises the following steps: acquiring output power, load power and grid-connected power of each phase of the three-phase inverter in real time; for each phase, calculating the difference between the load power and the output power, if the difference is less than or equal to 0, judging that the phase has countercurrent, and performing corresponding split-phase control; and if the difference is greater than 0, judging that the phase has a countercurrent trend, and carrying out corresponding split-phase control.

The invention discloses a double-frequency phase independent regulation and control metasurface unit and an application method. The metasurface unit comprises a dielectric substrate; the two sides of the dielectric substrate are covered with a first metal layer and a second metal layer respectively. Each of the first metal layer and the second metal layer comprises a metal patch main body and a phase regulation and control structure, the center of the metal patch main body is provided with a circular hollow, and the phase regulation and control structure is arranged in the circular hollow; the phase regulation and control structure of the first metal layer and the phase regulation and control structure of the second metal layer are in 180-degree rotational symmetry; the double-connecting-ring structure is an axisymmetric structure; an open circular split ring resonator is arranged in the double-connecting-ring structure, and an electromagnetic isolating ring group is arranged in the open circular split ring resonator; according to the invention, 360-degree independent phase control on electromagnetic waves at a low-frequency band and a high-frequency band is realized.

The invention discloses an antenna control method, system and device and a computer readable storage medium, and relates to the technical field of communication, and the method comprises the steps: obtaining a target position of a terminal device; generating mechanical platform control information and beam forming control information according to the target position; performing angle control on the mechanical platform according to the mechanical platform control information; performing angle control on the beam forming chip according to the beam forming control information; wherein the mechanical platform is used for carrying out horizontal rotation and / or pitching rotation on the antenna array; and the beam forming chip is used for performing phase control and / or amplitude control on the antenna array. According to the invention, large-range coarse adjustment of the horizontal angle and / or the pitching angle of the antenna array can be carried out by means of the mechanical platform, and small-range fine adjustment of the antenna array can be carried out by means of the beam forming chip, so that the antenna array can flexibly send beams to the terminal equipment, the beam width limitation of a small-size array is broken through, and the antenna array can be flexibly and accurately adjusted. And the signal quality of the terminal equipment is improved.

The invention discloses a differential bridge structure and a differential circuit structure. The differential bridge structure can comprise a differential power division network, a first differential phase shift network and a second differential phase shift network, wherein the differential power division network, the first differential phase shift network and the second differential phase shift network are constructed based on coupling transmission lines; the differential power division network is configured to divide an input signal into two paths of differential signals and output the two paths of differential signals to the first differential phase shift network and the second differential phase shift network respectively; the first differential phase shift network and the second differential phase shift network are respectively configured to output the differential signal as an output signal whose phase difference is a preset difference value including 90 DEG. The differential bridge structure disclosed by the invention has good broadband characteristics, realizes high-precision phase control, and can output and maintain 90-degree phase difference signal output.

Provided is a wireless power transmitting system and device, the wireless power transmitting device including: a signal generator configured to generate an initial signal; a controller configured to output an amplitude control signal and a phase control signal; a phase modulator configured to generate a phase-modulated signal by modulating a phase of the initial signal based on the phase control signal; a power amplifier configured to generate a power signal by amplifying the phase-modulated signal; a voltage converter configured to control a magnitude of a power voltage of the power amplifier based on the amplitude control signal; and an antenna configured to externally output the power signal.

The invention relates to the technical field of optical instruments, and provides a dimple telescope system based on a double-phase regulation and control super lens and a design method thereof, and the dimple telescope system comprises an objective lens, an eyepiece, a first super lens and a second super lens. The first super lens is arranged at the imaging plane position of the objective lens, is a local phase modulation type super lens and is used for implementing local phase modulation on an imaging area; and the second super lens is arranged at the pupil entrance plane position of the eyepiece, is a continuous phase type super lens, and is used for performing phase compensation and wavefront matching on the wavefront passing through the eyepiece. According to the invention, the double-phase collaborative design of the image plane local phase modulation superlens and the entrance pupil plane continuous phase compensation superlens is introduced into the Galileo telescope system, so that the unification of local high-resolution fovea imaging in the view field and the stability of the full-view-field image quality is realized on the premise of not changing the original optical path structure; and the aberration interference problem caused by local modulation of a single super lens is avoided.

The invention provides a power control method and a power control system based on phase dislocation control. The power control method comprises the following steps: acquiring a real-time heating state and an expected heating state of a household appliance; if the real-time heating state does not reach the expected heating state, determining the heating power required by the household appliance; if the heating power required by the household appliance is greater than the single-path rated power of the household appliance, the household appliance enters a high-power heating mode; the high-power heating mode is a heating mode in which at least two paths of heating loads of the heating electric appliance are started in a peak shifting manner for heating. In the embodiment of the invention, the heating power of the household electrical appliance can be improved by arranging at least two heating loads in the household electrical appliance, and the at least two heating loads in the heating electrical appliance can be turned on in a peak shifting manner in a high-power heating mode to prevent surge current superposition generated in the starting process of the heating loads. And the internal circuit of the household circuit is protected, and the UL authentication requirement is also met.

The invention relates to a dual-polarization 2bit transmission type metasurface unit working in a Ka wave band, which can realize four-state phase regulation and control of horizontal polarization and vertical polarization on a specified frequency band. And an implementation scheme with a better system integration advantage is provided for the high-frequency multi-polarization reconfigurable antenna system. The unit is composed of two groups of linearly polarized 2bit reconfigurable units which are orthogonally arranged, and each unit is composed of a pair of active receiving antennas at the bottom and a pair of active transmitting antennas at the top; a pair of PIN diodes are respectively integrated in a receiving antenna and a transmitting antenna, and four discrete phase states are realized through combination of switch states, so that 2-bit phase regulation and control are completed. The invention has the following advantages: 1, low transmission amplitude loss and precise phase gradient characteristic are shown in the dual-polarization Ka wave band, and high-precision wave beam regulation and control can be realized; 2, due to the fact that dual-line polarization adopts a synchronous regulation and control mode, the unit can complete phase control only through two feeder lines, and compared with an independent polarization control scheme, the complexity of a feed and bias network is remarkably reduced, so that interference of a bias circuit on electromagnetic radiation characteristics is effectively reduced; and 3, the emergent wave beam of the transmission type metasurface is located on the same side with the transmission type metasurface, so that the shielding of the feed source can be reduced, the interference of a reflection path is avoided, the aperture efficiency is improved, and the sidelobe is reduced.

Phase-redundant voltage regulator device (300) comprising: a plurality of controller phases (126A, 126B, 227A, 227B, 227C, 227D), each containing an electrically connected controller (116) to receive an input voltage at a controller input (240) and to provide a corresponding output voltage at a controller output (242); a control logic (366); and a set of phase groups of the plural controller phases, which contains a first and a second phase group (374, 376), wherein each phase group contains: a common controller input (V IN ), which is electrically connected to the control inputs of the phase group; a common controller output (V1; V2) which is electrically connected to controller outputs of the phase group; at least one redundant control phase; at least one defined controller phase (126A, 126B) from the plurality of controller phases; at least one replacement controller phase (227C; 227D) of a set of replacement controller phases; and a multi-phase controller (MPC) (122) electrically connected to each specified controller phase of the phase group, the MPC being configured to provide phase fault signals (308A, 310A; 308B, 310B) and a shared current phase control signal (I SHARE )(304A, 306A; 304B, 306B), which were received from each specified controller phase of a corresponding phase group, is transmitted to the control logic (366); wherein the set of substitute controller phases from the plural controller phases contains a first and a second substitute controller phase (227A, 227B), wherein each substitute controller phase contains (227A, 227B, 227C, 227D): a secondary output OR switching unit (118A) which is electrically connected and configured to limit the current flow into a secondary output (206) of the substitute controller phase; a first output switching unit (217) configured to electrically connect the controller output (242) of the substitute controller phase to a first common controller output (V1) in response to a first phase enable signal (316A; 316B); and a second output switching unit (219) configured to electrically connect the controller output (242) of the substitute controller phase to a second common controller output (V2) in response to a second phase enable signal (318A; 318B); where the control logic (366) is electrically connected to: MPCs (122) of each phase group (374; 376) of the set of phase groups, wherein the control logic is configured to the I SHARE -receives phase control signals (304A, 306A; 304B, 306B) from the MPCs and exchanges phase error signals (302A, 308A, 310A; 302B, 308B, 310B) with them; and Substitute controller phases (227A, 227B) of the set of substitute controller phases, wherein the control logic is configured to activate phase enable signals (316A, 318A; 316B, 318B) to the substitute controller phases (227A, 227B) as well as I SHARE -Transmits phase control signals (314A; 314B) to these and receives phase error signals (312A; 312B) from them; wherein the control logic is configured to electrically connect a substitute controller phase (227A, 227B) to a phase group (374; 376) containing a failed controller phase (126A, 126B) in response to receiving a phase fault signal (308A, 310A; 308B, 310B) from an MPC (122).

The invention relates to a rapid calculation method and system for a space magnetic field of a circular coil. The method comprises the following steps: converting an integral expression of a Biot-Savart law into a closed analytical solution containing first and second types of complete elliptic integrals; on the basis of an analytical expression of elliptic integration, the magnetic field intensity and direction generated by the coil at any point in the space can be efficiently and precisely calculated, and the defects that traditional finite element simulation calculation is complex, consumed time is too long, and efficiency and precision of a direct numerical integration method are difficult to consider at the same time are overcome. The method is particularly suitable for application scenes such as WPT system design, multi-transmitting-coil amplitude-phase control optimization and real-time simulation which need to carry out rapid and frequent calculation on the magnetic field. According to the method, full-automatic rapid calculation from physical parameter input to magnetic field result output is achieved, the core advantage of the method is that an analytical formula is utilized, the tedious process of numerical simulation and integration is avoided, and the calculation efficiency is remarkably improved while high precision is guaranteed.

An active transmission type intelligent metasurface and a matching circuit applied to the intelligent metasurface, the circuit comprising: a receiving antenna for receiving an electromagnetic wave signal; a power amplification unit for amplifying the electromagnetic wave signal received by the receiving antenna; a phase coupling unit for modulating the amplified electromagnetic wave signal into electromagnetic wave signals with various phase differences; a phase selection unit for selecting an electromagnetic wave signal with a required phase difference from the electromagnetic wave signals with various phase differences; and a radiation antenna for radiating the electromagnetic wave signal with the corresponding phase difference; the intelligent metasurface comprises a plurality of active transmission intelligent metasurface units arranged periodically to form an N*M array, and each active transmission intelligent metasurface unit in the array comprises an active transmission circuit. The present application realizes the active amplification function which the existing transmission RIS structure does not have and has the 2-bit phase control function, and the present application has low design complexity, low deployment cost and good system performance.

An antenna phase control method is applied to an antenna phase control device and an antenna, the antenna disposed on a moving carrier. The method includes obtaining a location information of the moving carrier; obtaining a destination information of the moving carrier and generating a navigation information according to the location information and the destination information; calculating at least one preset location point in the path and a phase information of the antenna corresponding to the at least one preset location point; and controlling a phase of the antenna according to the phase information when the moving carrier reaches the at least one preset location point. The present disclosure also provides an antenna phase control device.

The invention relates to the technical field of buck-boost converters, and discloses a phase control circuit and method, and a buck-boost system. According to the phase control circuit provided by the embodiment of the invention, the edge change rate of the phase-cut inductive current is slowed down by processing the phase-cut signal, so that when the double-phase reverse buck-boost converter performs phase cutting based on the phase-cut signal, one single-phase buck-boost converter can enter or exit softly, and the other single-phase buck-boost converter can enter or exit softly. Therefore, the ripple of the load voltage signal at the output end of the dual-phase reverse buck-boost converter is ensured to meet the design requirement, and the load connected with the dual-phase reverse buck-boost converter is prevented from working abnormally.

The application discloses a terahertz metasurface reflection unit based on a MEMS switchable delay line, and belongs to the field of radio frequency front-end devices.The unit adopts a sandwich structure of upper and lower glass substrates and a middle bonded metal surface, and a metal radiation patch, a phase delay line and a MEMS switch are integrated on the upper surface.The core is to control the on-off state of the phase delay line through the MEMS switch: when the switch is turned off, the unit is in a reference electrical length;when the switch is turned on, the current path is lengthened, so that the reflection phase lags by about 180 degrees, thereby realizing 1-bit phase coding.The design ingeniously combines the MEMS switch and the delay line, has the advantages of low driving voltage, low reflection loss and high phase control precision in the terahertz frequency band, and provides a feasible hardware solution for the practical application of a reconfigurable intelligent surface in a terahertz communication system.

The present application relates to the technical field of electrified railway control, and discloses a phase control closing method and a heavy haul locomotive circuit breaker, the method comprising: step one, establishing equivalent mathematical models for the heavy haul locomotive, traction substation, AT substation and traction network; step two, establishing a vehicle-network-station simulation model based on a MATALB / Simulink simulation platform; step three, obtaining the influence of different line loads on phase selection closing according to the vehicle-network-station simulation model; and step four, determining a phase control closing scheme and conducting test verification. The phase control closing and opening method of the heavy haul locomotive circuit breaker with the above structure can establish equivalent mathematical models for the heavy haul locomotive, traction substation, AT substation and traction network, and then establish a vehicle-network-station simulation model, analyze the influence of different line loads on phase selection closing, and determine a phase selection closing scheme according to the breakdown characteristics of the circuit breaker and the analysis results. The phase selection closing scheme determined through test verification can achieve the purpose of reducing the overvoltage of the closing system.

A smart lighting device may be configured to be controlled in response to control instructions in messages and / or phase-control signals. The smart lighting device may determine whether to respond to the phase-control signal or the control instructions in messages. The smart lighting device may be configured to recognize whether it is electrically connected to a smart load control device or a non-smart load control device. A load control device may determine whether it is electrically connected to a mixed circuit or a non-mixed circuit. When the load control device determines that the circuit is a mixed circuit, the load control device may transmit phase-control signals and control instructions in messages at the same time. The load control device may determine that a smart lighting device has been added (e.g., electrically connected) to the circuit it is electrically connected to.

This invention relates to the field of power electronics technology, and more particularly to a combined superimposed waveform control system suitable for high-voltage, high-frequency power supplies. The system includes a voltage amplitude control module, a phase angle control module, a modulation signal generation module, and a sorting algorithm module. The voltage amplitude control module takes as input the voltage amplitude setpoint and feedback for each frequency band, and outputs the amplitude of the modulation voltage for each frequency band. The phase control module takes as input the phase setpoint and feedback for each frequency band voltage, and outputs the phase of the modulation voltage for each frequency band. The modulation signal generation module takes as input the amplitude and phase of the modulation voltage for each frequency band, and outputs the target modulation signal required by the high-voltage, high-frequency power supply. The sorting algorithm module takes as input the target modulation signal and the feedback voltage of each module, and outputs the on / off commands for each power module. This invention can effectively avoid the influence of sampling delay and noise, generating a rich variety of voltage waveforms acting on power equipment.

To perform suitable multi-phase control in an on-time control method.SOLUTION: Using output transistors (MH) for a plurality of channels, an input voltage is independently switched; thus, an output voltage is generated. A ramp voltage (Vramp) and an error voltage (Verr) according to an error between a feedback voltage (Vfb) and a reference voltage (Vref_fb) are generated and from these voltages, a comparison signal (Cout) is generated. Based on the comparison signal, the output transistors of the channels are controlled to be on sequentially for a predetermined on period. Every time the level of the comparison signal is changed to an active level, the change direction of the ramp voltage is changed from a first direction to a second direction and after an inverted trigger time elapses, the direction is returned to the first direction. The inverted trigger time is set to be less than or equal to the time obtained by dividing the predetermined on period by the number of channels.SELECTED DRAWING: Figure 7

The application discloses a method and device for orbit transfer control of a lunar spacecraft, and realizes orbit transfer of the spacecraft into a full-parameter target orbit. The method comprises the following steps: a three-impulse control strategy of a far-lunar maneuver, phase control and period control is designed; based on an orbit plane, an arch line and a perigee height, control time and omnidirectional control impulses for orbit transfer from an initial orbit to a first intermediate orbit are determined; based on an orbit phase, a first tangential impulse for orbit transfer from the first intermediate orbit to a second intermediate orbit is determined; and based on an orbit period, a second tangential impulse for orbit transfer from the second intermediate orbit to the target orbit is determined. The first tangential impulse and the second tangential impulse are taken as variables, and a far-lunar maneuver position vector deviation is taken as a fitness value, and a genetic optimization algorithm is used to solve initial values of the impulses. The method solves the problem of orbit control solution caused by nonlinear enhancement of orbit evolution under perturbation influence and complexity of omnidirectional impulse control parameters.

The application provides a spatial sound field real-time generation device based on a light-controlled programmable ultrasonic phased array, realizes continuous phase modulation and amplitude control of array elements, does not need to separately configure a high-voltage pulse circuit or an independent amplifier for each channel, thereby guaranteeing the compactness of the system structure and the low power consumption advantage; the light-controlled phase shift unit independently controls the phase of each ultrasonic element by adjusting the light intensity, realizes accurate regulation and control of the wave front direction; the overall layout of the array and the power input are kept synchronous, thereby guaranteeing the controllability of the amplitude and energy output of the ultrasonic field; the application decouples the phase control and the power driving, effectively avoids the complex wiring problem of multi-channel synchronous control, and improves the flexibility and scalability of array operation; in addition, the introduction of the light-controlled mode significantly simplifies the array driving circuit, realizes parallel control of a large-scale array, and thereby forms an ultrasonic field generation device with high compactness, excellent controllability and high flexibility.

The embodiment of the specification relates to the technical field of super-resolution fluorescence microscopy, and particularly relates to an optical superlens optical sheet endoscopy imaging system and method. Phase control is performed on short-wavelength laser by an optical sheet superlens, so that incident light on a sample is finely adjusted into the form of an optical sheet, the short-wavelength laser after phase control is irradiated on the sample, the optical sheet and the sample interact to excite fluorescence, at the same time, phase control is performed on long-wavelength laser by an OAM light superlens, the obtained OAM light is irradiated on the sample, the OAM light quenches fluorescent substances at a specified position in a fluorescent spot excited by the short-wavelength laser, so that the diffraction area of the fluorescent spot is reduced, finally, fluorescence remaining after OAM light irradiation of the sample is converged on a photodiode for fluorescence power detection, and the resolution of imaging is improved on the basis of scanning of samples such as living cells.

This invention belongs to the field of microwave communication, specifically disclosing a low-parasitic amplitude modulation differential bridge T-type phase shifter. The ground terminals of the differential positive branch phase shifter circuit and the differential negative branch phase shifter circuit are connected to form a differential virtual ground. A first input port is connected to the input terminal of the differential positive branch phase shifter circuit via a matching circuit, and a second input port is connected to the input terminal of the differential negative branch phase shifter circuit via a matching circuit. The output terminal of the differential positive branch phase shifter circuit is connected to the first output port, and the output terminal of the differential negative branch phase shifter circuit is connected to the second output port. A first insertion loss adjustment circuit is connected in parallel between the matching circuit and the phase shifter circuit, and a second insertion loss adjustment circuit is connected in parallel between the phase shifter circuit and the signal output port. This invention reduces the difference in insertion loss between the bridge T-type phase shifter in the reference state and the phase shifter state, thus reducing parasitic amplitude modulation. This invention is applicable to phase control in phased array radar antenna elements.

The invention relates to a cyclotron which enables the production of α- or β-emitting radionuclides. The cyclotron, with a magnetic periodicity of 3, comprises three accelerating cavities connected to the centre, thus not requiring phase control between the cavities, forming a single high-frequency resonator. The six accelerating gaps per turn enable rapid acceleration (the angle ϕ between the accelerating gaps of each cavity being approximately 30°) which is essential for acceleration at the third and sixth harmonics. This cyclotron preferably has an injection system (31) supplied by different types of ion sources, making it possible to efficiently accelerate charged particles having Z / A ratios equal to 1 / 2 and to 1 / 4. The cyclotron may also have stripping extraction means positioned in the cyclotron so as to extract the charged particles and double their state of charge. These particles enable a set of nuclear reactions for producing α-emitting radionuclides.

The application discloses a high-density multi-channel Ku-band radio frequency channel integrated micro module, and belongs to the technical field of radio frequency micro systems. The micro module adopts a three-dimensional stacking architecture, and comprises a four-channel transceiving front end IP, a transceiving frequency conversion IP, a local oscillator source IP and a high-density integrated PCB substrate, and the three IPs are silicon-based packages; a received input signal enters the four-channel transceiving front end IP, is subjected to amplitude and phase control, is transmitted to the transceiving frequency conversion IP through the high-density integrated PCB substrate, is subjected to radio frequency frequency gating filtering, is mixed and frequency-converted to an intermediate frequency output. A transmitted input signal enters the transceiving frequency conversion IP, is subjected to frequency mixing and up-conversion, is subjected to radio frequency frequency gating filtering, is transmitted to the four-channel transceiving front end IP through the high-density integrated PCB substrate, is subjected to amplitude and phase control, and is amplified and output through a power amplifier chip. The application adopts a chip preset grounding ring, a silicon substrate independent cavity and an IP shielding cavity, and solves the complex electromagnetic compatibility problem during communication.