| CPC H04B 17/13 (2015.01) [H04B 17/102 (2015.01); H04W 4/38 (2018.02)] | 20 Claims |
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1. An electronic device comprising:
a network monitor configured to acquire network environment information related to a radio frequency (RF) transmission signal;
a transceiver configured to generate an envelope signal of the RF transmission signal;
a digital to analog converter (DAC) configured to convert a digital signal into an analog signal;
a sampling rate control block configured to determine a sampling rate of the DAC based on the network environment information;
a transmission (Tx) module including a power amplifier for receiving the RF transmission signal from the transceiver and amplifying the RF transmission signal; and
an envelope tracking (ET) modulator configured to receive the envelope signal from the transceiver and to provide an input power of the power amplifier to correspond to the envelope signal, the ET modulator comprising a linear regulator configured to linearly amplify the envelope signal and a switching converter configured to output a switching current according to a switching frequency,
wherein the ET modulator is further configured to determine a magnitude of the input power provided to the power amplifier based on the network environment information acquired by the network monitor,
wherein the ET modulator is further configured to regulate a bias of the linear regulator and the switching frequency of the switching converter based on the network environment information, and
wherein the network environment information comprises at least one of a bandwidth, a resource block, a sub-carrier spacing, and a modulation scheme.
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