Systems and methods for dynamically adjusting parameters of an active electrical device
A system for adjusting various parameters of an active electronic component based on sensed characteristics of the active electronic component and/or characteristics of the input or output power.
1 . An electrical system comprising:
an active electrical component configured to receive a variable parameter; and
a power management system configured to:
sense variation of the variable parameter; and
adjust an amount of electrical power supplied by a variable power supply to the active electrical component in response to the sensed variation of the variable parameter and based on a time constant, the time constant corresponding to a slew response time of the variable power supply and determined by:
varying the variable parameter,
determining an effect on at least one of a linearity, output power, efficiency, or signal-to-noise ratio of the active electrical component, and
generating the time constant in response to the effect.
2 . The electrical system of claim 1 , wherein the variable parameter comprises a voltage.
3 . The electrical system of claim 1 , wherein the active electrical component comprises an amplifier or a switch.
4 . An electrical system comprising:
an active electronic device configured to receive an input signal and generate an output signal;
an envelope tracking system configured to generate an envelope signal of the input signal, the envelope signal tracking a variation in an amplitude of the input signal, and the envelope signal having an envelope bandwidth; and
a control system configured to vary a bias power provided to the active electronic device, wherein the control system is further configured to:
determine whether a variation of the envelope signal is above a threshold level, the threshold level corresponding to a bias power provided to the active electronic device that optimizes at least one of efficiency, linearity, power out, or gain;
in response to the variation of the envelope signal being above the threshold level, vary the bias power between a threshold bias power and a maximum bias power based on the amplitude of the input signal; and
in response to the variation of the envelope signal not being above the threshold level, maintain the bias power at the threshold bias power.
5 . The electrical system of claim 4 , wherein the active electronic device comprises an amplifier or a switch.
6 . The electrical system of claim 4 , wherein the input signal is a pulsed signal, and the control system is configured to vary the bias power provided to the active electronic device by providing a voltage level to a drain terminal between a first voltage and a second voltage during a duration of a pulse of the pulsed signal and providing a voltage level to the drain terminal equal to a third voltage in-between pulses.
7 . The electrical system of claim 6 , wherein the first voltage and the second voltage can vary from one pulse to another.
8 . The electrical system of claim 6 , wherein the third voltage is lower than the first voltage and the second voltage.
9 . The electrical system of claim 6 , wherein the control system is configured to vary the bias power provided to the active electronic device by providing a voltage level to a gate terminal between a fourth voltage and a fifth voltage during the duration of the pulse and providing a voltage level to the gate terminal equal to the fifth voltage in-between the pulses.
10 . The electrical system of claim 9 , wherein the fifth voltage has a value that turns off the active electronic device.
11 . The electrical system of claim 1 , wherein the power management system comprises a processing system that executes a machine learning (ML) algorithm to generate the time constant.
12 . The electrical system of claim 1 , wherein the power management system is configured to generate the time constant of the active electrical component further in response to respond to the sensed variation in the variable parameter.
13 . The electrical system of claim 4 , wherein the control system is further configured to vary the bias power provided to the active electronic device based on a current sensed at a drain terminal.
14 . The electrical system of claim 6 , wherein the control system is further configured to vary the bias power provided to the active electronic device by providing a voltage level to a gate terminal between a third voltage and a fourth voltage during the duration of the pulse.
15 . The electrical system of claim 4 , wherein the envelope tracking system is configured to generate the envelope signal of the input signal using a weighted filter that utilizes weights determined based on a slew response time of the control system for tracking peaks of the amplitude of the input signal.
16 . The electrical system of claim 4 , wherein a rate that the bias power is varied is based on the envelope bandwidth.