9 results about "Broadband power amplifier" patented technology

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 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.

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.

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 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 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 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.