An exemplary structure has an output stage; a driver stage; and a power stage connected between the driver stage and the output stage. The power stage includes a first transistor and a second transistor connected in series between the driver stage and the output stage. The power stage also includes a third transistor and a fourth transistor connected in series between the driver stage and the output stage. An inductor has a first terminal electrically connected to a first node between the first transistor and the second transistor and a second terminal electrically connected to a second node between the third transistor and the fourth transistor. The inductor is configured to provide impedance matching between common-gate stages of the power stage.

A wave shaping circuit reduces slope magnitudes during increasing and decreasing voltage transitions. The wave shaping circuit includes a first switch that receives an input voltage having at least two voltage values where an input voltage transition between the at least two voltage values has a first slope magnitude; an inductor connected in series with the first switch; a second switch connected in a parallel arrangement with the first switch and the inductor; and a capacitor having a first end connected between the inductor and an output port and a second end connected to ground. When the input voltage begins the input voltage transition to a higher voltage value, the first switch turns on and the second switch turns off, such that the inductor limits current flow from the input voltage, decreasing a second slope magnitude of an output voltage transition to less than the first slope magnitude.

A transmission module includes n oscillator modules and a phase command signal generator. Each of the oscillator modules includes a voltage controlled oscillator and an amplification circuit. The voltage controlled oscillators output transmission high-frequency signals having the same frequency and synchronized among the n oscillator modules by synchronous control based on a common reference signal. The amplification circuits each perform power amplification for the transmission high-frequency signal from a corresponding one of the voltage controlled oscillators and output the resultant signal. Phases of the transmission high-frequency signals synchronized among the n oscillator modules and output from the voltage controlled oscillators are separately controlled according to respective n phase command signals from the phase command signal generator.

Systems and methods that integrate a directional coupling function with directivity that does not have output loss are disclosed. For example, a power amplifier circuit arrangement includes an input terminal to receive an input signal; amplifier circuitry including a first amplifier stage, a second amplifier stage, and a virtual ground node, where an input of the first amplifier stage is coupled to the input terminal, an output of the first amplifier stage is coupled to an input of the second amplifier stage via the virtual ground node, and an output of the second amplifier stage is coupled to the input of the first amplifier stage via feedback circuitry; an output terminal coupled to the output of the second amplifier stage, the output terminal to output an amplified signal; and a directional coupler terminal coupled to the virtual ground node.

A system having a set of power amplifiers each having a primary inductive structure configured to provide an output signal. A secondary inductive structure is configured to inductively couple to each of the primary inductive structures. A transmission line is provided with a signal trace and a ground trace. The signal trace of the transmission line is connected to a first end of the secondary inductive structure. A return path from a second end of the secondary inductive structure is coupled via a resonant network to the ground trace of the transmission line, in which the return path is spaced away from the secondary inductive structure to minimize inductive coupling to the primary structures.

A method of minimizing power consumption of an electronic device is provided. The method includes receiving a signal through a plurality of receivers of the electronic device, checking a status of the received signal, determining whether the received signal satisfies a preset amplifier control condition based on the status of the received signal, and adjusting a gain of an amplifier, which is connected to a receiver of the plurality of receivers, in response to the preset amplifier control condition when the preset amplifier control condition is satisfied.

A variable-gain power amplifying technique includes generating, with a network of one or more reactive components included in an oscillator, a first oscillating signal, and outputting, via one or more taps included in the network of the reactive components, a second oscillating signal. The second oscillating signal has a magnitude that is proportional to and less than the first oscillating signal. The power amplifying technique further includes selecting one of the first and second oscillating signals to use for generating a power-amplified output signal, and amplifying the selected one of the first and second oscillating signals to generate the power-amplified output signal.

An apparatus and method for controlling wireless transmission. The apparatus, which controls a transmitter that provides an output signal by upconverting and amplifying an input signal, includes a memory configured to store first calibration data representing a saturation power and a linear gain of a reference transmitter as functions of operating conditions of the reference transmitter. A controller may be configured to estimate a saturation power and a linear gain of the transmitter of the apparatus based on operating conditions of the transmitter and the first calibration data. The controller may generate at least one control signal for controlling an operation of the transmitter based on a saturation power difference between the estimated saturation power and a target saturation power and a linear gain difference between the estimated linear gain and a target linear gain.

This disclosure provides systems, methods, and devices for wireless communication that support a reference signal configuration to account for a compression factor due to transmit nonlinearity. In a first aspect, a transmit device is configured to receive an indicator of a scaling factor from a transmit device including a power amplifier. The scaling factor is based on an input power scaling associated with a linear region operation of the power amplifier, an input power scaling associated with a non-linear region operation of the power amplifier, a compression factor, or a combination thereof. The transmit device is further configured to receive shared channel resource elements (REs) from the transmit device during a slot, and recover the received shared channel REs based on the scaling factor. Other aspects and features are also claimed and described.

The embodiments described herein include amplifiers configured for use in radio frequency (RF) applications. In accordance with these embodiments, the amplifiers are implemented to generate a shaped envelope signal, and to apply the shaped envelope signal to transistor gate(s) of the amplifier to provide gate bias modulation. So configured, the shaped envelope signal may facilitate high linearity in the amplifier.