US 11,683,016 B2
ISO-gain implementation for a WiFi symbol-power-tracking architecture
Grant Darcy Poulin, Carp (CA)
Assigned to SKYWORKS SOLUTIONS, INC., Irvine, CA (US)
Filed by SKYWORKS SOLUTIONS, INC., Irvine, CA (US)
Filed on Jan. 5, 2021, as Appl. No. 17/141,312.
Claims priority of provisional application 62/958,901, filed on Jan. 9, 2020.
Prior Publication US 2021/0218374 A1, Jul. 15, 2021
Int. Cl. H03F 1/42 (2006.01); H03F 3/24 (2006.01); H04L 5/00 (2006.01); H04W 84/12 (2009.01)
CPC H03F 1/42 (2013.01) [H03F 3/245 (2013.01); H03F 2200/36 (2013.01); H03F 2200/451 (2013.01); H04L 5/0007 (2013.01); H04W 84/12 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A power amplifier module comprising:
an input configured to receive an input radio-frequency signal, the input radio-frequency signal including a series of data symbols, the series of data symbols including a plurality of pilot tones;
an output configured to provide an output radio-frequency signal;
a power amplifier having a signal input to receive the input radio-frequency signal and a power supply input to receive a supply voltage, the power amplifier configured to amplify the input radio-frequency signal to provide the output radio-frequency signal; and
a controller to receive an indication of a peak output power level of an upcoming data symbol in the series of data symbols, to adjust at least the supply voltage provided to the power amplifier based on the peak output power level of the upcoming data symbol, and to configure the power amplifier module to maintain a substantially constant gain over the series of data symbols, wherein maintaining the substantially constant gain includes detecting a respective amplitude of each pilot tone of the plurality of pilot tones and correcting a gain of the power amplifier responsive to detecting a gain variation between at least two pilot tones of the plurality of pilot tones.