US 12,224,712 B2
Method of maximizing power efficiency for power amplifier system and power amplifier system thereof
Chung-Cheng Wang, Hsinchu (TW); Kang-Ming Tien, Hsinchu County (TW); and Tzu-Yun Wang, New Taipei (TW)
Assigned to Rafael Microelectronics, Inc., Hsinchu County (TW)
Filed by Rafael Microelectronics, Inc., Hsinchu County (TW)
Filed on Feb. 21, 2022, as Appl. No. 17/676,773.
Prior Publication US 2023/0268888 A1, Aug. 24, 2023
Int. Cl. H03F 1/02 (2006.01); H03F 3/24 (2006.01); H04B 1/04 (2006.01)
CPC H03F 1/0238 (2013.01) [H03F 3/245 (2013.01); H04B 2001/045 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A method of maximizing power efficiency for a power amplifier system, comprising:
obtaining a power supply voltage;
determining a first voltage level sufficient for a power amplifier of the power amplifier system to output an output power;
determining a second voltage level lower than the first voltage level;
determining whether the power amplifier is activated according to a communication protocol, to generate a determination result;
determining to convert the power supply voltage into a supply voltage having the first voltage level or the second voltage level according to the determination result; and
supplying the power amplifier with the supply voltage.