The present disclosure provides a device and a method for adjusting envelope signals for use by an envelope tracking (ET) enabled power amplifier. The device comprises: a controller configured to calculate a difference between a first amplitude of a first envelope signal received at a first time instance and second amplitude of a second envelope signal received at a second time instance; compare the difference with a predetermined threshold; and adjust an output envelope signal corresponding to the first envelope signal in response to determining that the difference is greater than or equal to the predetermined threshold, such that the output envelope signal is adjusted step-by-step from the second envelope signal to the first envelope signal with each amplitude step being less than or equal to a predetermined amplitude step.

The present disclosure provides a device and a method for adjusting envelope signals for use by an envelope tracking (ET) enabled power amplifier. The device comprises: a controller configured to calculate a difference between a first amplitude of a first envelope signal received at a first time instance and second amplitude of a second envelope signal received at a second time instance; compare the difference with a predetermined threshold; and adjust an output envelope signal corresponding to the first envelope signal in response to determining that the difference is greater than or equal to the predetermined threshold, such that the output envelope signal is adjusted step-by-step from the second envelope signal to the first envelope signal with each amplitude step being less than or equal to a predetermined amplitude step.

There is provided a method and system for linear signal processing with signal decomposition. The system including: a decomposition module to receive an analog input signal and perform signal decomposition, the signal decomposition including slicing the analog input signal into a plurality of slices to produce one or more analog components and one or more digital components, the decomposition module directing each component to a separate signal path; and a processing module to perform one or more linear operations on at least one of the signal paths. In some cases, the signal decomposition includes slicing the analog input signal into the plurality of slices by amplitude. In some cases, the analog components include unsaturated slices of the analog input signal and the digital components include saturated slices of the analog input signal.

There is provided a method and system for linear signal processing with signal decomposition. The system including: a decomposition module to receive an analog input signal and perform signal decomposition, the signal decomposition including slicing the analog input signal into a plurality of slices to produce one or more analog components and one or more digital components, the decomposition module directing each component to a separate signal path; and a processing module to perform one or more linear operations on at least one of the signal paths. In some cases, the signal decomposition includes slicing the analog input signal into the plurality of slices by amplitude. In some cases, the analog components include unsaturated slices of the analog input signal and the digital components include saturated slices of the analog input signal.

Examples described herein include methods, devices, and systems which may compensate input data for nonlinear power amplifier noise to generate compensated input data. In compensating the noise, during an uplink transmission time interval (TTI), a switch path is activated to provide amplified input data to a receiver stage including a recurrent neural network (RNN). The RNN may calculate an error representative of the noise based partly on the input signal to be transmitted and a feedback signal to generate filter coefficient data associated with the power amplifier noise. The feedback signal is provided, after processing through the receiver, to the RNN. During an uplink TTI, the amplified input data may also be transmitted as the RF wireless transmission via an RF antenna. During a downlink TTI, the switch path may be deactivated and the receiver stage may receive an additional RF wireless transmission to be processed in the receiver stage.

An electronic device provided includes a communication module, an external module, and a signal integration circuit including first to fourth input ports, and first and second output ports. The first input port is for inputting an input signal. The second input port is for inputting a first L1 band signal. The third input port is for inputting a first L5 band signal. The fourth input port is for inputting a second L1 band signal and a second L5 band signal. The first output port selectively outputs a first output signal and a second output signal. The second output port selectively outputs the first L5 band signal and the second L5 band signal. When the fourth input port is not coupled to an external module, the first output port outputs the first output signal, and the second output port outputs the first L5 band signal.

An electronic device provided includes a communication module, an external module, and a signal integration circuit including first to fourth input ports, and first and second output ports. The first input port is for inputting an input signal. The second input port is for inputting a first L1 band signal. The third input port is for inputting a first L5 band signal. The fourth input port is for inputting a second L1 band signal and a second L5 band signal. The first output port selectively outputs a first output signal and a second output signal. The second output port selectively outputs the first L5 band signal and the second L5 band signal. When the fourth input port is not coupled to an external module, the first output port outputs the first output signal, and the second output port outputs the first L5 band signal.

Circuit and method for inter-symbol and intra-symbol voltage method are disclosed. Herein, a transceiver circuit is configured to determine a voltage target(s) for generating a modulated voltage(s) to amplify a radio frequency (RF) signal modulated in multiple symbols. Specifically, the transceiver circuit will generate multiple voltage targets for any of the symbols to thereby enable intra-symbol voltage modulation when the respective symbol is modulated to carry a selected type of information or generate a single voltage target for any of the symbols to thereby enable inter-symbol voltage modulation when the respective symbol lacks the selected type of information. By dynamically performing inter-symbol and intra-symbol voltage modulation based on the type of information carried in a symbol(s), the modulated voltage can be timely adapted to closely track a time-variant power envelope of the RF signal to thereby avoid potential distortion and protect critical information in the RF signal.

Circuit and method for inter-symbol and intra-symbol voltage method are disclosed. Herein, a transceiver circuit is configured to determine a voltage target(s) for generating a modulated voltage(s) to amplify a radio frequency (RF) signal modulated in multiple symbols. Specifically, the transceiver circuit will generate multiple voltage targets for any of the symbols to thereby enable intra-symbol voltage modulation when the respective symbol is modulated to carry a selected type of information or generate a single voltage target for any of the symbols to thereby enable inter-symbol voltage modulation when the respective symbol lacks the selected type of information. By dynamically performing inter-symbol and intra-symbol voltage modulation based on the type of information carried in a symbol(s), the modulated voltage can be timely adapted to closely track a time-variant power envelope of the RF signal to thereby avoid potential distortion and protect critical information in the RF signal.

Apparatus and methods for power detection with enhanced dynamic range are provided. In certain embodiments, a front end system includes a power amplifier that amplifies a radio frequency (RF) input signal to generate an RF output signal, a directional coupler that generates a sensed RF signal based on sensing the RF output signal from the power amplifier, and a power detector that processes the sensed RF signal to generate a detection signal indicating an output power of the power amplifier. Additionally, the power detector includes two or more detection paths providing different amounts of gain to the sensed RF signal from the directional coupler.