Tracker Module Supply Modulation for Compact RF Power Amplifiers
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Solution Overview
Problem
Existing power supply control units for radio frequency systems are bulky due to modular configurations, which hinders the miniaturization of communication devices.
Innovation Solution
A tracker module with a module laminate, a first IC chip, and a second IC chip, where the first IC chip includes switches in a switched-capacitor circuit and a supply modulator to generate discrete voltages for a power amplifier, and the second IC chip controls the power amplifier, allowing for efficient power supply management and miniaturization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a power supply control unit is modularized, then it can be supplied with dynamically regulated power supply voltage, but the size of the power supply control unit increases
Solution Approach 1:
The patent combines the power supply control unit and the tracker module into a single integrated module. The power supply control unit includes a power supply circuit with a switched capacitor circuit and supply modulator, while the tracker module includes a control circuit and power amplifier. These previously separate components are merged into one module, allowing dynamic power supply voltage regulation to be applied to the power amplifier without increasing the overall size, as the regulation functionality is integrated within the existing module structure rather than added as a separate unit
2Volume of moving object
If the tracker module is downsized, then the overall communication device size is reduced, but the power supply control functionality may be compromised
Solution Approach 1:
The patent implements a compact power supply control circuit within the tracker module using a switched capacitor circuit that operates in the time domain rather than requiring large physical components. The switched capacitor circuit generates multiple discrete voltage levels by switching capacitors in different configurations, and the supply modulator selectively outputs appropriate voltages to the power amplifier. This time-domain switching approach replaces what would traditionally require large physical voltage regulation components, enabling downsizing of the tracker module while maintaining full power supply control functionality
Solution Approach 2:
The power supply control circuit is segmented into distinct functional blocks: a switched capacitor circuit that generates multiple discrete voltage levels, and a supply modulator that selectively outputs appropriate voltages to the power amplifier based on control signals. This segmentation allows each sub-circuit to be optimized for minimal size while maintaining its specific function, contributing to overall module downsizing without compromising the reliability of power supply control
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 enables the downsizing of tracker modules, radio frequency systems, and communication devices by optimizing power supply management, improving power amplifier control, and reducing the overall size and surface area of the transmission system.
Implementation Method 1
The switched-capacitor circuit is configured to generate a plurality of discrete voltages based on an input voltage
Implementation Method 2
the supply modulator is configured to selectively output at least one of the plurality of discrete voltages to the power amplifier
Data Source
AI summary
A tracker module includes a module laminate, a first IC chip, and a second IC chip. The first IC chip is disposed on the module laminate. The second IC chip is configured to control a power amplifier. The first IC chip includes at least one switch included in a switched-capacitor circuit and at least one switch included in a supply modulator. The switched-capacitor circuit is configured to generate a plurality of discrete voltages based on an input voltage, and the supply modulator is configured to selectively output at least one of the plurality of discrete voltages to the power amplifier. The second IC chip is disposed on the module laminate and coupled to the first IC chip.