Tracker Module Laminate Layout for Thermal Isolation in PA Supply Modulation
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Solution Overview
Problem
The existing power supply modulation circuit in Patent Document 1 suffers from efficiency deterioration of the power amplifier circuit due to heat generation, affecting the voltage output characteristics of the pre-regulator circuit and the supply modulator.
Innovation Solution
A tracker module is designed with a module laminate separate from the substrate of the pre-regulator circuit, featuring a switched-capacitor circuit and a supply modulator that generate and selectively output discrete voltages to an amplifier, thereby isolating the heat-generating components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the switched-capacitor circuit and supply modulator are integrated on the same substrate as the pre-regulator circuit, then device complexity is reduced, but heat generation causes efficiency deterioration of the power amplifier circuit
Solution Approach 1:
The patent divides the power supply modulation system into two separate modules: a pre-regulator circuit on one substrate and a tracker module (containing switched-capacitor circuit and supply modulator) on another substrate. This segmentation isolates the heat-generating tracker module from the power amplifier, preventing thermal interference while maintaining functional integration within each module.
Solution Approach 2:
The patent extracts the heat-generating components (switched-capacitor circuit and supply modulator) from the common substrate with the pre-regulator circuit and places them on a separate module laminate. This extraction removes the source of heat interference from the power amplifier's thermal environment, resolving the efficiency deterioration problem.
2Loss of energy
If the tracker module is separated from the pre-regulator circuit substrate, then heat impact on the power amplifier is reduced, but device complexity increases
Solution Approach 1:
The patent merges the switched-capacitor circuit and supply modulator onto a single module laminate, creating an integrated tracker module. This consolidation reduces the number of separate components and interconnections needed, offsetting the complexity increase from physical separation while maintaining thermal isolation benefits.
Solution Approach 2:
The patent introduces a module laminate as an intermediary carrier that hosts both the switched-capacitor circuit and supply modulator. This intermediary structure facilitates the integration of multiple functions on a separate substrate, managing the complexity of thermal isolation through a standardized interface layer.
3Manufacturing precision
If the switched-capacitor circuit generates multiple discrete voltages, then voltage output characteristics are improved, but heat generation increases
Solution Approach 1:
The patent moves the multi-voltage generation function to a separate dimensional plane (different substrate) from the power amplifier. By implementing the switched-capacitor circuit on a module laminate rather than the same substrate as the power amplifier, the patent achieves precise voltage control while isolating the thermal effects in a different spatial dimension.
Data Source
AI summary
A tracker module is provided that includes a module laminate separate from a substrate on which a switch is disposed that is included in a pre-regulator circuit configured to convert an input voltage into a regulated voltage; a switched-capacitor circuit configured to generate a plurality of discrete voltages based on the regulated voltage; and a supply modulator configured to selectively output at least one of the plurality of discrete voltages to an amplifier. A switch and a capacitor included in the switched-capacitor circuit and a switch included in the supply modulator are disposed on the module laminate.