Apparatus and method for amplifying signal and wireless transmitter using the same
AssigneeElectronics and Telecommunications Research Institute
InventorsJoon-Hyung KIM, Kwang-Chun LEE, Gweon-Do JO, Jae-Ho JUNG
Life of this patent
Estimating the term…
Abstract
Provided are a signal amplifying apparatus and method and a wireless transmitter using the same. The signal amplifier includes a polar coordinate converter configured to output an envelope signal and a phase signal by converting a signal to a polar coordinate, a multilevel quantizer configured to output a multilevel quantized signal by quantizing the envelope signal to multiple levels, an amplification state controller configured to control an amplification state using the multilevel quantized signal, and a power amplifier configured to amplify the phase signal according to the controlled amplification state.
Claims15
A signal amplifier, comprising:
- a polar coordinate converter configured to output an envelope signal and a phase signal by converting a signal to a polar coordinate;
- a multilevel quantizer configured to output a multilevel quantized signal by quantizing the envelope signal to multiple levels;
- an amplification state controller configured to control an amplification state using the multilevel quantized signal;
- and
- a power amplifier configured to amplify the phase signal according to the controlled amplification state.
A wireless transmitter, comprising:
- a polar coordinate converter configured to output an envelope signal and a phase signal by converting a signal into a polar coordinate;
- a multilevel quantizer configured to output a multilevel quantized signal by quantizing the envelope signal into multiple levels;
- an amplification state controller configured to control an amplification state by using the multilevel quantized signal;
- and
- a power amplifier configured to amplify the phase signal according to the controlled amplification state.
A method of amplifying a signal, comprising:
- outputting an envelope signal and a phase signal by converting a signal into a polar coordinate;
- outputting a multilevel quantized signal by quantizing the envelope signal to multiple levels;
- controlling an amplification state using the multilevel quantized signal;
- and
- amplifying the phase signal according to the controlled amplification state.
Dependencies are inferred from the claim text.