Signal pre-shaping to suppress power supply disturbances

An apparatus configured to generate output signals for transmission, the apparatus comprising:

• a pre-shaping controller configured to:
• detect a triggering condition related to a change in operational status of the apparatus;
• and
• select one of a plurality of pre-shaping vectors based on the triggering condition and past operating conditions of the apparatus during a plurality of most recent time intervals, wherein each of the pre-shaping vectors includes a plurality of values that compensate for effects of voltage variation of a power supply for the apparatus due to the triggering condition and the past operating conditions;
• a signal multiplier configured to, responsive to the pre-shaping controller, apply the respective values of the selected pre-shaping vector to respective information-carrying signals during a plurality of time intervals subsequent to the triggering condition, thereby generating pre-shaped information-carrying signals;
• and
• an active circuit powered by the power supply and configured to generate output signals for transmission during the plurality of subsequent time intervals using the pre-shaped information-carrying signals.

A non-transitory, computer-readable medium storing computer-executable instructions that, when executed by a pre-shaping controller of an apparatus configured to generate output signals for transmission, configure the apparatus to:

• detect a triggering condition related to a change in operational status of the apparatus;
• select one of a plurality of pre-shaping vectors based on the triggering condition and past operating conditions of the apparatus during a plurality of most recent time intervals, wherein each of the pre-shaping vectors includes a plurality of values that compensate for effects of voltage variation of a power supply for the apparatus due to the triggering condition and the past operating conditions;
• during a plurality of time intervals subsequent to the triggering condition, apply the respective values of the selected pre-shaping vector to respective information-carrying signals, thereby generating pre-shaped information-carrying signals;
• and
• generate output signals for transmission during the plurality of subsequent time intervals, wherein the output signals are generated by an active circuit of the apparatus using the pre-shaped information-carrying signals, wherein the active circuit is powered by the power supply.