Symbol power tracking amplification system and a wireless communication device including the same
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United States of America Patent
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Jan 31, 2023
Grant Date -
Oct 8, 2020
app pub date -
May 28, 2020
filing date -
Apr 30, 2018
priority date (Note) -
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Abstract
A symbol power tracking amplification system including: a modem to generate data and symbol tracking signals; a symbol tracking modulator including a control circuit, first and second voltage supply circuits and a switch circuit, the control circuit generates first and second voltage level control signals in response to the symbol tracking signal, the first voltage supply circuit generates a first output voltage in response to the first voltage level control signal, the second voltage supply circuit generates a second output voltage in response to the second voltage level control signal and the switch circuit outputs the first or second output voltages as a supply voltage in response to a switch control signal; an RF block to generate an RF signal based on the data signal from the modem; and a power amplifier to adjust a power level of the RF signal based on the supply voltage.
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