Peak Amplifier Power Gating in Doherty RF Amplifiers
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The power consumption of amplification devices in radio base stations, particularly in local 5G communication services, remains high due to low usage frequency, necessitating a reduction in power consumption without compromising communication services.
Innovation Solution
An amplification device with a peak amplifier and a carrier amplifier, along with a measurement unit and control unit circuit, that measures transmission power and controls the power supply of the peak amplifier to be turned off when a decrease in transmission power is detected, allowing for independent power management and reduced power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the amplification device operates continuously to maintain communication services, then the reliability of communication service is improved, but the power consumption increases
Solution Approach 1:
The amplification device dynamically adjusts its operating state based on traffic conditions. The control unit switches between a first state (both peak and carrier amplifiers operating) and a second state (only carrier amplifier operating) to adapt to varying transmission power requirements, thereby reducing power consumption while maintaining service reliability
Solution Approach 2:
The control unit periodically monitors transmission power and switches the amplification device between different operational states based on detected traffic conditions. This periodic monitoring and state switching enables the system to reduce power consumption during low-traffic periods while ensuring reliable service during high-traffic periods
2Use of energy by moving object
If the peak amplifier is turned off to reduce power consumption, then the power consumption is reduced, but the transmission power capability decreases
Solution Approach 1:
The system dynamically controls the peak amplifier's power supply based on detected transmission power levels. When transmission power decreases below a threshold, the control unit turns off the peak amplifier's power supply. This dynamic control reduces power consumption while maintaining sufficient transmission power capability through the carrier amplifier alone during low-traffic conditions
Data Source
AI summary
An amplification device includes a peak amplifier and a carrier amplifier that are disposed in respective signal paths independently of each other. The amplification device further includes a measurement circuit that measures a transmission power for transmitting a radio signal obtained by combining an output signal from the peak amplifier and an output signal from the carrier amplifier, and a control circuit that performs control to turn off a first power supply of the peak amplifier in a case where a decrease in the transmission power is detected.