21 results about "Broadband power amplifier" patented technology

A broadband Doherty power amplifier is provided, which includes a power divider, a carrier power amplifier circuit, a peak power amplifier circuit, and a load modulation network. The carrier power amplifier circuit includes a carrier input matching circuit, a carrier power amplifier, and a carrier output matching circuit. The peak power amplifier circuit includes a peak input matching circuit, a peak power amplifier and a peak output matching circuit. A resistance value of a system load is ZL. An output impedance of the carrier output matching circuit is Zm and meets Zm=ZL(n+1). An output impedance of the peak output matching circuit is Zp and meets Zp=ZL(n+1) / n. The load modulation network is configured to set an impedance of a combination point to be ZQ, whose resistance value is ZL. A method of implementing a broadband Doherty power amplifier is further provided.

The utility model relates to a power amplifier assembly, in particular to a miniaturized split type two-way broadband power amplifier assembly, which comprises an aluminum shell, a power division module shell, two power amplifier module shells and a power supply control device are fixed in an inner cavity of the aluminum shell, a power distribution module is fixed in the power division module shell, a first cover plate is fixed on the power division module shell, and a second cover plate is fixed on the power division module shell. A power amplification module is fixed in the power amplification module shell, a second cover plate is fixed on the power amplification module shell, a third cover plate is fixed above the second cover plate on the power amplification module shell, and a fourth cover plate is fixed above the first cover plate and the third cover plate on the aluminum shell; according to the technical scheme provided by the utility model, the defects that the size is large, the weight is heavy and the power amplification module is inconvenient to replace in the prior art can be effectively overcome.

The invention discloses a broadband power amplifier based on a distributed Balun structure, which comprises an input matching network, a first-stage amplifier, an inter-stage matching network, a second-stage amplifier and a distributed Balun parallel transmission line structure which are connected in sequence, the function of converting differential signals into single-end signals and optimal load matching are achieved through a distributed Balun parallel transmission line structure, the amplifier can achieve broadband load matching and good output power and efficiency in a high-frequency band, meanwhile, parallel transmission lines are additionally introduced, and the overcurrent capacity of an output matching network is improved.

A broadband Doherty power amplifier is disclosed. The Doherty power amplifier includes a main power amplifier and a peak amplifier. Compared to the conventional method of combining the outputs of the main and peak amplifiers before an impedance transformation circuit, this Doherty power amplifier combines the outputs after an impedance transformation circuit in the peak amplifier output path. This eliminates or at least reduces the possible impedance step drop and corresponding impedance step rise for the main output path. This reduction or elimination of the step drop and rise reduces insertion loss and allows for increased efficiency at the first efficiency peak, thus improving the fractional bandwidth of the Doherty power amplifier.

The invention discloses an efficient broadband power amplifier combining parasitic compensation and harmonic control technologies, which comprises an input matching network, a grid bias network, a parallel resonance stabilization network, a field effect transistor, a parasitic compensation network, a harmonic control network, a drain bias network and an output matching network, the design of an input and output matching network is realized by adopting a step type matching structure, the circuit bandwidth is expanded, the output efficiency of the power amplifier is improved by designing a parasitic compensation network, meanwhile, a harmonic control network is designed, and second and third harmonics of the power amplifier are suppressed by utilizing the harmonic control network, so that after being tuned by the harmonic network, a radio-frequency signal is transmitted to the power amplifier. The second harmonic power and the third harmonic power are obviously reduced, so that the harmonic power is converted into fundamental power, the output power is increased, the output efficiency is improved, the circuit structure enables the power amplifier to obtain high-efficiency and high-power capabilities in a broadband, and the circuit structure can be popularized and applied to a 5G wireless communication system.

The utility model relates to the field of radio frequency amplification, and discloses an all-solid-state short-wave broadband power amplifier, which comprises a controller, broadband power modules, a three-way distributor and a three-way synthesizer, the three-way distributor, the three broadband power modules and the three-way synthesizer are connected in sequence, the controller is connected with the broadband power modules and a directional coupler, and the directional coupler is connected with the controller. The input port of the three-way distributor is connected with an input signal. According to the utility model, the input signals are distributed and synthesized, and then are dynamically adjusted through the controller, so that the effects of realizing full-band coverage and guaranteeing the quality of full-band signals without connecting a plurality of traditional narrow-band devices in parallel are achieved, and the requirements of the fields of short-wave communication and the like on broadband high-power signals are met.

The application discloses a broadband microwave solid-state power amplifier design method based on a reconfigurable matching network, and belongs to the technical field of microwave power amplifier design. The method acquires transistor model parameters and a target working frequency band, constructs an initial topology of a reconfigurable matching network containing tunable element nodes and switch switching paths, performs discretization sampling on the target frequency band to obtain a plurality of key frequency points, dynamically adjusts element values and switch on-off states for each key frequency point through an iterative search algorithm to generate a corresponding power matching parameter set, compares the power matching parameter sets of adjacent key frequency points in terms of difference degree, identifies parameter jump intervals with a difference degree exceeding a tolerance threshold, positions mismatch element nodes according to the parameter jump intervals, performs a switch path reconstruction operation, and generates a broadband matching parameter sequence. The application can effectively solve the performance deterioration problem of a broadband power amplifier matching network caused by parameter mutation when working across frequency bands.

The invention provides a harmonic filter integrated in an ultra-short wave power amplifier in a matching manner by using a load traction technology, which comprises the following steps: setting different frequency points for a broadband power amplifier, and determining target impedance values corresponding to the different frequency points based on a preset test condition by combining the load traction technology; determining an input impedance network of the harmonic filter corresponding to the target impedance value according to the target impedance value, and matching an output transmission line corresponding to the input impedance network through impedance conversion by adopting a multi-order elliptical low-pass network model; an elliptical low-pass model is arranged in the harmonic filter, and a transmission zero point is generated through parallel resonance to suppress harmonic waves. According to the method disclosed by the invention, a module cascade matching joint debugging link can be omitted to the greatest extent, functional indexes of the module assembly are correspondingly improved, the volume space is saved, the integrated design is realized, the application, installation and operation are simple and convenient, and the performance is stable and reliable.

This utility model relates to the field of radio frequency communication technology and discloses a multi-band broadband power amplifier module, including a single-chip module, a thermal management module, and a power management module. The single-chip module integrates a dynamic broadband matching module, a multi-stage push-pull amplification module, and a digital predistortion correction module. The output terminal of the dynamic broadband matching module is electrically connected to the input terminal of the multi-stage push-pull amplification module, and the output terminal of the multi-stage push-pull amplification module is electrically connected to the input terminal of the digital predistortion correction module. The output terminal of the digital predistortion correction module is electrically connected to the input terminal of the dynamic broadband matching module. The single-chip module is bidirectionally electrically connected to the thermal management module. In this utility model, by adopting an integrated design, the dynamic broadband matching module, the multi-stage push-pull amplification module, and the digital predistortion correction module are integrated onto a single chip, significantly reducing the overall size, lowering production costs, and improving power amplification efficiency.

This invention provides an ultra-wideband Doherty power amplifier system and control method, comprising a control layer, a physical layer, and an optimization layer. The physical layer employs three parallel gallium nitride high electron mobility transistors, combined with a broadband collaborative synthesis network of a multilayer PCB planar transformer synthesizer with a leakage inductance resonant parasitic absorption mechanism, to achieve bandwidth expansion. The optimization layer introduces an improved MOEA / D algorithm with group delay flatness constraints. The control layer uses an FPGA-embedded model to assist in iterative learning and control of the ILC unit. This invention effectively solves the nonlinear divergence problem caused by strong physical-control coupling in a three-channel amplifier module architecture within the ultra-wideband range, simultaneously achieving high back-off efficiency and fast, stable convergence of the digital predistortion algorithm in the 0.6–4.9 GHz frequency band.

The invention discloses a high-linearity millimeter wave broadband power amplifier based on a cross cold field effect transistor pair, which belongs to the technical field of wireless communication, and comprises a linearizer consisting of a self-adaptive double-voltage path biasing circuit and a cross cold field effect transistor pair, a driving stage module and a power stage module, an input matching network, an inter-stage matching network and an output matching network; the broadband OP1dB performance of the millimeter wave power amplifier can be improved by a linearizer technology combining a self-adaptive dual-voltage path biasing circuit and a cross cold field effect transistor pair and by adjusting the gain pole positions of an input matching network, an inter-stage matching network and an output matching network; and good broadband OP1dB performance can be realized in both small signal performance and large signal performance.

The application provides a rapid detection device and method for evaluating aluminum alloy weld fatigue life, and relates to the technical field of fatigue detection. The device comprises: an ultrasonic excitation and collection module, which comprises a broadband power amplifier and a high-frequency piezoelectric probe, is used for contacting an aluminum alloy weld to be detected, and is configured to inject a group of high-energy and continuously swept-frequency ultrasonic excitation signals into the weld; a receiver, which is integrally integrated with the high-frequency piezoelectric probe, is used for synchronously collecting a first ultrasonic response signal modulated by internal micro-damage of the weld; a feature extraction module is configured to demodulate a high-order harmonic component caused by material fatigue damage from the first ultrasonic response signal; the relative energy ratio of the high-order harmonic component and a fundamental wave component is calculated, a nonlinear resonance spectrum distortion factor is generated; and a life evaluation module, which is embedded with a first fatigue damage physical model, is configured to take the nonlinear resonance spectrum distortion factor as an input parameter, calculate and output a first residual fatigue life of the aluminum alloy weld to be detected.

This invention discloses a silicon-based ultra-wideband power amplifier in the millimeter-wave band. The silicon-based ultra-wideband power amplifier adopts a three-stage cascaded structure, including a wideband input matching network, a driver stage amplifier network on the signal input side, an interstage matching network, a power stage amplifier network on the signal output side, and a wideband output matching network. The driver stage amplifier network is connected to the GSG input probe on the input side via the input matching network. The interstage matching network connects the driver stage amplifier network and the power stage amplifier network. The power stage amplifier network is connected to the GSG output probe on the output side via the wideband output matching network. This invention meets the requirements of multi-band mobile communication by extending bandwidth, and reduces costs using silicon-based technology while meeting output power and efficiency requirements.

This application relates to an impedance determination method, apparatus, broadband power amplifier, storage medium, and program product for a broadband power amplifier. The impedance determination method determines the optimal impedance of the power amplifier tube's package surface based on the performance parameters of the power amplifier tube and the reactance parameters of the broadband power amplifier. It then applies a pull-type processing method to the optimal matching impedance of the power amplifier tube's package surface. This impedance determination method achieves pull-type processing based on the optimal impedance of the power amplifier tube's package surface, obtaining the optimal fundamental impedance at the input end, the optimal second harmonic impedance at the output end, the optimal third harmonic impedance at the output end, and the optimal fundamental impedance at the output end. This allows the broadband power amplifier to maintain broadband operation while simultaneously achieving high efficiency, meeting the wide bandwidth and high efficiency requirements of modern wireless communication technologies.

The application provides a power amplifier architecture for broadband microwave signal mixing and a working method thereof. The power amplifier architecture comprises a continuous wave microwave signal source S1, a synchronization signal source S2, a pulse signal source S3, a broadband phase shifter or a delay device D1, a broadband power amplifier A1, a broadband power amplifier A2, a broadband power amplifier A3, a bridge H1, a bridge H2, an isolation resistor R1, a directional coupler C1, a directional coupler C2, a directional coupler C3 and a directional coupler C4. The power amplifier architecture realized by the application is used for seamless mixing of broadband high-power microwave signals, and the mixing ratio, frequency and signal pattern are not limited, and the cost of a micro-power test system can be greatly reduced.

The present application relates to the technical fields of wideband power amplifier, and especially relates to a wideband power amplifier input control circuit, which comprises: a first operational amplifier circuit, a same-phase input end of which is connected with a related voltage signal of a wideband power amplifier output signal, an opposite-phase input end of which is connected with a voltage signal corresponding to a preset voltage threshold for amplitude stabilization, and an output end of which outputs a voltage signal for amplitude stabilization; a waveband selection circuit, an input end of which is connected with a preset waveband selection control signal, selects and outputs a segmented preset voltage signal corresponding to a frequency waveband of the output signal; a second operational amplifier circuit, a same-phase input end of which is connected with the segmented preset voltage signal, an opposite-phase input end of which is connected with the voltage signal for amplitude stabilization, and an output end of which outputs an attenuation value control voltage signal; and an electrically tunable attenuator, an input end of which is connected with the attenuation value control voltage signal, and an output end of which outputs a working radio frequency signal to the wideband power amplifier. The present application can solve the technical problem of unstable power output amplitude of the wideband power amplifier.

The invention provides a W-band ultra-wideband power amplifier adopting a gain compensation technology, which comprises the following steps: dividing and converting a radio frequency signal by a power distribution network to obtain two paths of differential signals; the first-stage differential driving amplifier is used for performing power amplification on the two paths of differential signals; the first inter-stage matching network matches the two paths of amplified differential signals to generate two paths of first differential interface signals; the second-stage differential driving amplifier carries out power amplification on the two paths of first differential interface signals, and a gain pole is adjusted through a transmission line-capacitor-transmission line pi-type structure; the second inter-stage matching network matches the two paths of amplified first differential interface signals to generate two paths of second differential interface signals; the differential output amplifier comprises a two-tube stacking structure and is used for performing power amplification on the two paths of second differential interface signals; and the power synthesis network combines the two paths of amplified second differential interface signals into an output signal. Therefore, the W-band ultra-wideband power amplifier with ultra-wideband, high output power and miniaturization is realized.

The utility model relates to a power amplifier assembly, in particular to a miniaturized split type single-path broadband power amplifier assembly, which comprises an aluminum shell, a power amplifier module shell, a gain control channel and a power supply control device are fixed in an inner cavity of the aluminum shell, a power amplifier module is fixed in the power amplifier module shell, and a third cover plate is fixed on the power amplifier module shell. A second cover plate is fixed above the third cover plate on the aluminum shell; a first cover plate is fixed above the second cover plate on the aluminum shell; according to the technical scheme provided by the utility model, the defects that the size is large, the weight is heavy and the power amplification module is inconvenient to replace in the prior art can be effectively overcome.

The invention discloses a 6-18GHz broadband power amplifier based on a GaAs (gallium arsenide) process. The power amplifier adopts a three-stage cascade structure, and the input stage circuit model adopts an input matching circuit to construct an S11 pole and realize broadband matching; the driving stage circuit model adopts an L-type inter-stage matching circuit to realize optimal impedance matching with the output stage; the output stage circuit model adopts a broadband matching structure and a microstrip line bias network to construct an S22 pole. The invention further provides a corresponding control method, models of all levels are constructed on the basis of test data blocks, simulation optimization is conducted after cascading, and finally the models capable of accurately predicting the performance of the amplifier are packaged. According to the scheme, the problem that an existing broadband power amplifier model is difficult to fit multi-index precision at the same time is solved, the established model is well matched with measured data in the aspects of small-signal S parameters, output power, efficiency, harmonic characteristics and the like, portability is high, and the method is suitable for design and verification of a large-scale integrated circuit system.

The application discloses a miniaturized high-efficiency wideband power amplifier based on a six-coupled differential inductive pair, which comprises a first-stage differential amplification unit, a six-coupled differential inductive pair, a second-stage differential amplification unit, a drain inductive network and an output balun module; the six-coupled differential inductive pair comprises first to sixth inductors, and six independent inductors used for input matching, inter-stage matching, output matching, harmonic suppression and other functions in a conventional wideband power amplifier are integrated in one integrated inductive pair body. The application realizes the synergistic breakthrough of extreme miniaturization and ultra-wideband performance by integrating the conventional six independent inductors in one integrated differential inductive pair body, deeply fusing the input, inter-stage and output matching networks of an amplification link, and combining the differential transmission line theory and full-wave electromagnetic simulation optimization.

The invention belongs to the field of communication devices, and particularly relates to a broadband power amplifier device for unmanned aerial vehicle communication, which comprises a main body, the main body is mounted on an unmanned aerial vehicle body and comprises a fixed bin, a heat conducting plate is fixedly mounted in an inner cavity of the fixed bin, and at least two groove bodies are formed in the fixed bin; the air pressure bin is provided with a movable shaft, the direction where the movable shaft is located is set to be the first direction, the movable shaft can be driven by atmospheric pressure to axially move in the first direction, and a plurality of tooth grooves are formed in the movable shaft; the conduction mechanism is installed on the fixed bin, the conduction mechanism comprises an adjusting probe, and the two sides of the adjusting probe are in sliding connection with the gradient microstrip impedance line; through the structural design that the air pressure driven conduction mechanism is matched with the gradient microstrip impedance line, the function of precise broadband power adjustment is achieved, the problems that traditional electronic adjustment is slow in response and prone to interference are solved, and the adaptability and transmission stability of communication signals of the unmanned aerial vehicle are improved.