Abstract: A method of reducing memory effect of a power amplifier (PA), for a look-up table (LUT) based memory digital pre-distortion (DPD) circuit of an electronic device is disclosed. The method comprises generating a pre-distorted signal according to a LUT including parameters of an input signal amplitude and an input signal delay associated with a bandwidth of a signal inputted to the memory DPD circuit, and outputting the pre-distorted signal to the PA for improving the nonlinearity of the PA.

Abstract: A method of reducing memory effect of a power amplifier (PA), for a look-up table (LUT) based memory digital pre-distortion (DPD) circuit of an electronic device is disclosed. The method comprises generating a pre-distorted signal according to a LUT including parameters of an input signal amplitude and an input signal delay associated with a bandwidth of a signal inputted to the memory DPD circuit, and outputting the pre-distorted signal to the PA for improving the nonlinearity of the PA.

Abstract: According to at least one aspect, a communication system is provided. The communication system includes a power amplifier configured to amplify an input signal to generate an amplified output signal and provide the amplified output signal to an antenna, a power supply coupled to the power amplifier and configured to provide power to the power amplifier based on a power supply control signal, and a controller coupled to the power supply. The controller is configured to identify a target transmit power level for transmission of a wireless signal, generate the power supply control signal based on the target transmit power level using information indicative of a relationship between the target transmit power level and a setting of the power supply, generate performance information indicative of a characteristic of the communication system when the wireless signal is transmitted, and update the information indicative of the relationship using the performance information.

Abstract: According to at least one aspect, a communication system is provided. The communication system includes a power amplifier configured to amplify an input signal to generate an amplified output signal and provide the amplified output signal to an antenna, a power supply coupled to the power amplifier and configured to provide power to the power amplifier based on a power supply control signal, and a controller coupled to the power supply. The controller is configured to identify a target transmit power level for transmission of a wireless signal, generate the power supply control signal based on the target transmit power level using information indicative of a relationship between the target transmit power level and a setting of the power supply, generate performance information indicative of a characteristic of the communication system when the wireless signal is transmitted, and update the information indicative of the relationship using the performance information.

Abstract: A current-rectifying device includes a switching component and an impedance transformer. A conductance between first and second nodes of the switching component is controlled based on a voltage between high-impedance control and control-reference nodes of the switching component to determine an amount of current that is permitted to flow between the first and second nodes. The impedance transformer includes a positive input node electrically connected to one of the first and second nodes based on AC voltage swings, a negative input node, a positive output node electrically connected to the high-impedance control node, and a negative output node, and which senses an AC voltage swing derived from the AC input voltage with the positive input node and the negative input node, and provides an AC voltage swing between the high-impedance control and control-reference nodes that is greater than the AC voltage swing derived from the AC input voltage.

Abstract: A current-rectifying device includes a switching component and an impedance transformer. A conductance between first and second nodes of the switching component is controlled based on a voltage between high-impedance control and control-reference nodes of the switching component to determine an amount of current that is permitted to flow between the first and second nodes. The impedance transformer includes a positive input node electrically connected to one of the first and second nodes based on AC voltage swings, a negative input node, a positive output node electrically connected to the high-impedance control node, and a negative output node, and which senses an AC voltage swing derived from the AC input voltage with the positive input node and the negative input node, and provides an AC voltage swing between the high-impedance control and control-reference nodes that is greater than the AC voltage swing derived from the AC input voltage.