Envelope Tracker Module Asymmetric Terminals for PA Path Efficiency
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Solution Overview
Problem
The efficiency of tracker circuits in envelope tracking systems deteriorates due to the arrangement configuration of voltage output and input paths in power amplifier circuits.
Innovation Solution
A tracker module with a module laminate having asymmetrically disposed external output terminals and integrated circuits, including a switched-capacitor circuit to generate and distribute discrete voltages to power amplifiers, minimizing efficiency loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If voltage output terminals are arranged in a conventional symmetric configuration, then the device structure is simple and easy to manufacture, but the efficiency of the tracker circuit deteriorates due to interference between voltage paths
Solution Approach 1:
The patent applies asymmetry by disposing the first external output terminal adjacent to a first side of the module laminate and the second external output terminal adjacent to a second side of the module laminate, where the first and second sides are different sides of the rectangular module laminate. This asymmetric arrangement separates the voltage output paths spatially, reducing interference between paths and improving tracker circuit efficiency while maintaining a manageable structural complexity.
2Volume of moving object
If multiple voltage paths are integrated in a compact module, then the device size is reduced and integration is improved, but efficiency deteriorates due to path interference and heat accumulation
Solution Approach 1:
The patent segments the voltage output paths by assigning each external output terminal to a different side of the module laminate. This spatial segmentation separates the first voltage path and second voltage path, reducing mutual interference and heat accumulation while maintaining compact integration within the module laminate structure.
Solution Approach 2:
The patent utilizes the dimensional space of the module laminate by distributing terminals across different sides (spatial dimensioning). Instead of concentrating all terminals in one area, the arrangement leverages the two-dimensional layout of the rectangular laminate, placing terminals on adjacent sides to maximize spatial separation within the compact form factor.
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 suppresses efficiency deterioration by optimizing the voltage supply configuration, enhancing the performance of tracker modules and communication devices.
Implementation Method 1
a switched-capacitor circuit (Switched-Capacitor Voltage Balance Stage) that generates, from the voltage, a plurality of voltages having different voltage levels
Data Source
AI summary
An ET module is provided that includes a laminate having a rectangular shape; first and second external output terminals on the module laminate; and a voltage supply circuit that supplies a power supply voltage VETA to a first PA module via the first external output terminal and also simultaneously supplies a power supply voltage VETA to a second PA module via the second external output terminal. The module laminate has first and second sides that form at least a part of an outer shape of the laminate. The first external output terminal is adjacent to the first side, and the second external output terminal is adjacent to the second side. In a plan view of the module laminate, the first and second external output terminals are disposed asymmetrically with respect to a line passing through a midpoint M of the module laminate and parallel to the first and second sides.