Power Amplifier Supply Voltage Tuning for Lower Mobile Power Use

The patent dynamically adjusts the supply voltage of the power amplifier based on the current transmit power level. Instead of using fixed voltage levels, the system continuously monitors the transmit power and adjusts the voltage to an optimal level that maintains sufficient gain while minimizing power consumption. This dynamic adaptation resolves the contradiction by making the voltage-gain relationship flexible rather than static.

The patent changes the supply voltage parameter according to the transmit power requirements. By establishing a mapping between different transmit power levels and corresponding optimal voltage levels, the system can select the appropriate voltage parameter to achieve the desired gain while consuming minimal power. This parameter adjustment strategy directly addresses the trade-off between power consumption and gain.

The patent segments the transmit power range into multiple fine-grained levels rather than using three broad categories. By dividing the power control range into smaller intervals (e.g., multiple dBm levels), the system can select more precise voltage adjustments for each segment. This fine segmentation allows for more accurate matching between transmit power requirements and voltage levels, improving both power consumption control and classification precision.

The patent applies partial action by adjusting the voltage only to the extent necessary for each specific transmit power level. Instead of using fixed high/medium/low voltage modes, the system applies just enough voltage to achieve the required gain for the current power level, avoiding excessive voltage application. This partial adjustment strategy optimizes power consumption while maintaining sufficient gain precision.