Differential RF Module Flux Orientation for Signal Isolation
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Solution Overview
Problem
In simultaneous communication, the isolation between transmission signals decreases, which affects the performance of radio frequency modules in Carrier Aggregation systems.
Innovation Solution
A radio frequency module is designed with differential power amplifiers, transformers, and baluns, where the direction of magnetic flux in each component is intentionally different to prevent coupling and maintain isolation between signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If simultaneous communication of multiple transmission signals is performed, then communication efficiency is improved, but isolation between signals decreases
Solution Approach 1:
The patent applies dimensionality change by orienting magnetic flux directions of different power amplifiers in different spatial directions. Specifically, the first power amplifier generates magnetic flux in a first direction while the second power amplifier generates magnetic flux in a second direction that is different from the first direction. This spatial separation of magnetic flux vectors reduces mutual interference and maintains signal isolation while enabling simultaneous transmission of multiple signals, thus resolving the contradiction between communication efficiency and signal isolation.
2Adaptability or versatility
If multiple power amplifiers are used for simultaneous communication, then signal transmission capability is improved, but magnetic flux coupling increases
Solution Approach 1:
The patent employs asymmetry by configuring power amplifiers with different magnetic flux generation directions. The first power amplifier and second power amplifier are designed to generate magnetic flux in asymmetrically different directions, breaking the symmetry that would otherwise cause constructive interference and coupling. This asymmetric configuration allows multiple power amplifiers to operate simultaneously without excessive magnetic flux coupling, maintaining signal transmission capability while eliminating harmful interference.
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
This configuration effectively suppresses the decrease in isolation, ensuring reliable simultaneous communication by preventing magnetic flux coupling between signals.
Implementation Method 1
A direction of magnetic flux generated in the first transformer and a direction of magnetic flux generated in the second transformer are different from each other
Implementation Method 2
A direction of magnetic flux generated in the first balun and a direction of magnetic flux generated in the second balun are different from each other
Implementation Method 3
A direction of magnetic flux generated in the first inductor and a direction of magnetic flux generated in the second inductor are different from each other
Data Source
AI summary
A decrease in isolation is suppressed when transmitting both a first transmission signal and a second transmission signal in simultaneous communication. A radio frequency module includes a first transformer and a second transformer. The first transformer is included in a first differential power amplifier to amplify the first transmission signal. The second transformer is included in a second differential power amplifier to amplify the second transmission signal to be simultaneously communicated with the first transmission signal. A direction of magnetic flux generated in the first transformer is different from a direction of magnetic flux generated in the second transformer.