Power Amplifier Voltage Switching for 5G Waveform Efficiency
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Solution Overview
Problem
Current electronic devices face increased current consumption when applying a constant voltage for transmission signal amplification across different waveforms and modulation schemes in 5G systems, leading to inefficiencies and heat generation.
Innovation Solution
An electronic device with a power amplifier, voltage generator, and communication processor that adaptively adjusts the applied voltage based on the output waveform and modulation scheme, using different DC power sources and lookup tables to optimize voltage levels for efficient power amplification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a constant voltage is applied for transmission signal amplification across different waveforms and modulation schemes, then the amplification performance is maintained, but current consumption increases
Solution Approach 1:
The patent implements dynamic voltage adjustment by switching between different DC power sources (first DC power source and second DC power source) based on the detected waveform type. The communication processor dynamically selects which voltage to apply to the power amplifier - a first voltage for DFT-s-OFDM waveform and a second voltage for CP-OFDM waveform - thereby optimizing current consumption while maintaining adequate amplification performance for each specific waveform condition.
Solution Approach 2:
The patent changes the voltage parameter applied to the power amplifier based on the modulation scheme and waveform type. By detecting whether the transmission signal uses DFT-s-OFDM or CP-OFDM waveform, the system adjusts the DC voltage level accordingly, using different voltage values optimized for each waveform's power characteristics and amplification requirements, thus reducing overall current consumption.
2Use of energy by moving object
If different DC power sources are used for different waveforms, then current consumption is reduced, but device complexity increases
Solution Approach 1:
The patent incorporates a feedback mechanism where the communication processor detects the waveform type (DFT-s-OFDM or CP-OFDM) of the transmission signal and uses this information to control the voltage generator. The detection result feeds back to the voltage selection logic, enabling automatic and adaptive voltage switching without manual intervention, thereby managing the complexity through intelligent control rather than fixed circuit design.
Solution Approach 2:
The communication processor performs multiple functions: it manages communication protocols, detects waveform types, controls the power amplifier, and manages voltage selection. By making the communication processor multi-functional, the patent avoids adding separate dedicated circuits for waveform detection and voltage control, thereby managing device complexity through functional integration while still achieving reduced current consumption.
Data Source
AI summary
According to one or more embodiments of the disclosure, an electronic device may include a power amplifier, a voltage generator, an antenna, and a communication processor. The CP determines whether an output waveform of the transmission signal which is output through the antenna is a first waveform or a second waveform. If the output waveform is the first waveform, the voltage generator generates a first output voltage for amplifying the first waveform by applying a first direct current (DC) power source of one or more first voltages. If the output waveform is the second waveform, the voltage generator generates a second output voltage for amplifying the second waveform by applying a second DC power source of a second voltage shifted by a designated level with respect to the first voltage, based on a peak power of the first waveform and a peak power of the second waveform.