Doherty power amplifier (PA) devices (e.g., packages and modules) including integrated output combining networks are disclosed. In embodiments, the Doherty PA device includes a first amplifier die having a first transistor with a first output terminal at which a first amplified signal is generated, a second amplifier die having a second transistor with a second output terminal at which a second amplified signal is generated, and an output combining network. The output combining network includes, in turn, a combining node integrally formed with the second amplifier die and electrically coupled to the second output terminal. At least one die-to-die bond wire electrically couples the first output terminal to the combining node. The at least one die-to-die bond wire has an electrical length, which is results in a 90 degree phase shift imparted to the first amplified signal between the first output terminal and the combining node.

A communication device includes a power amplifier that generates power signals according to one or more operating bands of communication data, with the amplitude being driven and generated in output stages of the power amplifier. The final stage can include an output passive network that suppresses suppress an amplitude modulation-to-phase modulation (AM-PM) distortion. During a back-off power mode a bias of a capacitive unit of the output power network component can be adjusted to minimize an overall capacitance variation. An output passive network can further generate a flat-phase response between dual resonances of operation.

According to at least one aspect of the disclosure, a front-end module is provided comprising an input configured to receive a radio-frequency signal, an output configured to be coupled to an antenna, a balun coupled to the output, one or more power amplifiers coupled to the input, and an inverter coupled between the one or more power amplifiers and the balun, the inverter being configured to provide output impedance matching to the one or more power amplifiers.

A communication device includes a power amplifier that generates power signals according to one or more operating bands of communication data, with the amplitude being driven and generated in output stages of the power amplifier. The final stage can include an output passive network that suppresses suppress an amplitude modulation-to-phase modulation (AM-PM) distortion. During a back-off power mode a bias of a capacitive unit of the output power network component can be adjusted to minimize an overall capacitance variation. A output passive network can further generate a flat-phase response between dual resonances of operation.

A multi-band power amplifier module includes at least one transmission input terminal, at least one power amplifier circuit that receives a first transmission signal and a second transmission signal through the at least one transmission input terminal, a first filter circuit that allows the first transmission signal to pass therethrough, a second filter circuit that allows the second transmission signal to pass therethrough, at least one transmission output terminal through which the first and second transmission signals output from the first and second filter circuits are output, a transmission output switch that outputs each of the first and second transmission signals output from the at least one power amplifier circuit to the first filter circuit or the second filter circuit, and a first tuning circuit that adjusts impedance matching between the at least one power amplifier circuit and the at least one transmission output terminal.

One example includes a device that is comprised of a pre-power amplifier, a power amplifier, a signal path, and a dynamic bias circuit. The pre-power amplifier amplifies an input signal and outputs a first amplified signal. The power amplifier receives the first amplified signal and amplifies the first amplified signal based on a dynamic bias signal to produce a second amplified signal at an output thereof. The signal path is coupled between an output of the pre-power amplifier and an input of the power amplifier. The dynamic bias circuit monitors the first amplified signal, generates the dynamic bias signal, and outputs the dynamic bias into the signal path.

Provided is a dual-mode power amplifier with switchable operating frequencies, comprising at least two preamplifier circuits, a matching circuit for matching an output signal of each preamplifier circuit, an input transformer T1 with at least two output taps, an output stage amplifier circuit with the same number as the output taps of the input transformer T1, an output transformer T2, a switch S1 and a switch S2; circuit power supply VCC1 is loaded on an input end of the input transformer T1 via switch S1 and switch S2 respectively; operating frequencies of the matching circuit are different. The power amplifier realizes the switching of the maximum output power, supports the signal amplification in more frequency bands, and solves the problems in the prior art that the number of components is too large because more groups of power amplifiers for power amplification are needed for different frequency bands.

One example includes a device that is comprised of a pre-power amplifier, a power amplifier, a signal path, and a dynamic bias circuit. The pre-power amplifier amplifies an input signal and outputs a first amplified signal. The power amplifier receives the first amplified signal and amplifies the first amplified signal based on a dynamic bias signal to produce a second amplified signal at an output thereof. The signal path is coupled between an output of the pre-power amplifier and an input of the power amplifier. The dynamic bias circuit monitors the first amplified signal, generates the dynamic bias signal, and outputs the dynamic bias into the signal path.

A generator including a power combiner is provided. The power combiner includes a plurality of inputs, each input connectable to a respective power amplifier for receiving a respective power signal. A plurality of impedance matching circuit branches is connected to a respective one of the plurality of inputs. Each impedance matching circuit branch includes at least one high pass filter section and at least one low pass filter section through which the respective power signal passes. The impedance matching circuit branches are connected so as to combine the power signals from each power amplifier. An output is provided for outputting the combined power signal.

A Doherty amplifier module includes a substrate, an RF signal splitter, a carrier amplifier die, and first and second peaking amplifier dies. The RF signal splitter divides an input RF signal into first, second, and third input RF signals, and conveys the input RF signals to splitter output terminals. The carrier amplifier die includes one or more first power transistors configured to amplify, along a carrier signal path, the first input RF signal to produce an amplified first RF signal. The peaking amplifier dies each include one or more additional power transistors configured to amplify, along first and second peaking signal paths, the second and third input RF signals to produce amplified second and third RF signals. The dies are coupled to the substrate so that the RF signal paths through the carrier and one or more of the peaking amplifier dies extend in substantially different (e.g., orthogonal) directions.