Multi-Output NRHPZ Power Converter for Fast RF Supply Modulation
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Solution Overview
Problem
Existing RF power amplifiers face inefficiencies in power management due to the presence of right-half-plane-zero (RHPZ) in their control-to-output transfer functions, which limits the ability to dynamically adjust power supply voltage in response to rapid variations in RF signal amplitude.
Innovation Solution
The implementation of non-right-half-plane-zero (NRHPZ) power converters with buck and boost functionality, incorporating switched-capacitor and magnetic stages, allows for the synthesis of multiple output voltages without RHPZ, enabling efficient power management across varying RF signal conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If conventional RHPZ power converters are used, then the system structure is simple, but the ability to dynamically adjust power supply voltage in response to rapid RF signal variations is limited
Solution Approach 1:
The power converter is divided into multiple functional stages: a first stage (e.g., boost converter) that generates intermediate voltages and a second stage (e.g., buck converter) that regulates final output voltages. This segmentation allows each stage to be optimized for its specific function, enabling faster dynamic response to RF signal variations while maintaining manageable complexity through modular design.
Solution Approach 2:
The converter employs dynamic voltage adjustment capabilities with multiple output voltages that can be rapidly switched and regulated in response to changing RF signal conditions. The control system dynamically modifies duty cycles and switching frequencies to achieve fast response times, transforming the static converter into an adaptive system that tracks envelope variations.
2Loss of energy
If discrete supply modulation is used, then the converter structure is simpler, but the power management efficiency is reduced
Solution Approach 1:
The patent merges multiple converter functions into a unified multi-output architecture where a single converter system provides both boost and buck functionality across multiple output channels. This consolidation eliminates the need for separate discrete converters, reducing overall system complexity while improving power management efficiency through coordinated control and shared components.
Solution Approach 2:
The converter system is designed with universal functionality to handle multiple voltage levels and output configurations simultaneously. The same converter architecture can operate in boost mode, buck mode, or combinations thereof, providing adaptable power management that improves efficiency across diverse operating conditions without requiring specialized discrete converters for each function.
3Loss of energy
If continuous supply modulation is used, then power amplifier efficiency is improved, but the converter complexity increases
Solution Approach 1:
The converter incorporates self-regulating mechanisms where each output stage autonomously maintains its voltage through feedback control. The modular architecture allows each channel to independently adjust its duty cycle and regulation parameters, enabling continuous supply modulation for high power amplifier efficiency while distributing control complexity across multiple independent units rather than requiring a single complex centralized controller.
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 NRHPZ converters enhance power management efficiency by providing flexible voltage adjustment, supporting voltages above the input level, and eliminating RHPZ-related inefficiencies, thereby improving RF power amplifier performance.
Implementation Method 1
The magnetic stage comprises a first plurality of switches and an inductor
Implementation Method 2
The output stage comprises a second plurality of switches and at least one capacitor
Data Source
AI summary
Described are concepts, systems, system architectures, circuits, methods, and techniques directed toward power management and control. In particular, described are concepts, systems, system architectures, circuits, methods, and techniques for implementing power converters that may not have a right-hand pole zero in their linearized, averaged control-to-output transfer function, but that may still have buck and boost functionality.