Tracker Module Switched-Capacitor Supply for Stable PA Voltage
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Solution Overview
Problem
Existing power amplifier modules in mobile communication devices face degradation of power supply voltage due to multiple variable discrete voltage levels, which affects power-added efficiency (PAE).
Innovation Solution
A tracker module, power amplifier module, and radio-frequency module are designed with a switched-capacitor circuit and supply modulator to generate and select discrete voltages based on radio-frequency signals, preventing voltage degradation by dynamically adjusting power supply voltages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If multiple variable discrete voltage levels are supplied to the power amplifier to improve power-added efficiency, then power-added efficiency is improved, but power supply voltage degradation occurs
Solution Approach 1:
The patent implements dynamic voltage adjustment by supplying multiple variable discrete voltage levels to the power amplifier based on the envelope signal. The voltage selection is dynamically changed according to the signal characteristics, allowing the system to adapt to different operating conditions and improve power-added efficiency while maintaining voltage stability through controlled dynamic transitions.
Solution Approach 2:
The patent changes the voltage parameter by providing multiple discrete voltage levels (e.g., V1, V2, V3, V4) instead of a single fixed voltage. The supply modulator selects appropriate voltage levels based on the envelope signal, thereby changing the operating parameters of the power amplifier to optimize efficiency while preventing voltage degradation through intelligent selection.
2Use of energy by moving object
If discrete voltage levels are generated and selected dynamically, then power-added efficiency is improved, but device complexity increases
Solution Approach 1:
The supply modulator is designed to perform multiple functions: it generates discrete voltage levels, selects appropriate voltages based on the envelope signal, and supplies them to the power amplifier. This multi-functional component reduces the need for separate circuits for each function, thereby managing device complexity while achieving improved power-added efficiency.
Solution Approach 2:
The switched-capacitor circuit pre-generates multiple discrete voltage levels before they are needed by the power amplifier. By preparing the voltage options in advance and having the supply modulator simply select from these pre-generated levels, the system reduces real-time computational complexity while maintaining the ability to dynamically adjust voltage for efficiency improvement.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively prevents power supply voltage degradation, improving power-added efficiency (PAE) by dynamically adjusting voltage levels according to radio-frequency signals, enhancing the performance of power amplifier modules in mobile communication devices.
Implementation Method 1
a first supply modulator and at least one switch in a switched-capacitor circuit. The switched-capacitor circuit is configured to generate a plurality of discrete voltages
Implementation Method 2
The first supply modulator is configured to generate a first power supply by selecting at least one of the plurality of discrete voltages
Data Source
AI summary
A tracker module includes a module laminate configured to provide interconnections to circuit components arranged on the module laminate, at least one integrated circuit arranged on the module laminate, and a first output terminal and a plurality of second output terminals that are configured to output signals externally of the tracker module. The at least one integrated circuit includes a first supply modulator and at least one switch in a switched-capacitor circuit. The switched-capacitor circuit is configured to generate a plurality of discrete voltages, the plurality of discrete voltages being supplied to the plurality of second output terminals to output. The first supply modulator is configured to generate a first power supply by selecting at least one of the plurality of discrete voltages, the first power supply is provided to the first output terminal to output.