RF Module Transformer Layout for Compact Low-Interference Amplification
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Solution Overview
Problem
The existing difference amplifying type power amplifiers in radio frequency modules are bulky due to numerous circuit elements, leading to increased size and potential interference that deteriorates signal quality.
Innovation Solution
A radio frequency module design with a power amplifier configuration that separates amplifying elements and transformers across opposite sides of a module board, utilizing a first and second transformer with coils connected in specific configurations to reduce size while maintaining signal quality, and incorporating a low noise amplifier on one surface and power amplifier components on the other to ensure isolation and efficient signal processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a difference amplifying type power amplifier with multiple circuit elements is used, then amplification performance is improved, but the size of the radio frequency module increases
Solution Approach 1:
The patent utilizes the third dimension by mounting circuit components on both the front surface and back surface of the module board. The power amplifier components (first and second amplifying elements, transformers) are distributed across both surfaces, effectively using vertical space to reduce the horizontal footprint of the module while maintaining all necessary circuit functions for proper amplification performance
2Device complexity
If multiple circuit elements are concentrated on one side of the module board, then connection complexity is reduced, but signal interference increases
Solution Approach 1:
The patent segments the circuit components and distributes them across both surfaces of the module board. The power amplifier components are separated from other circuit elements by placing them on opposite sides of the board, which reduces electromagnetic interference while maintaining manageable connection complexity through systematic routing of connection terminals
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 miniaturizes the radio frequency module while maintaining signal quality and reducing interference, allowing for efficient transmission and reception of radio frequency signals without compromising sensitivity or amplification performance.
Implementation Method 1
a first transformer that includes a first coil and a second coil; and a second transformer that includes a third coil and a fourth coil... The two primary coils are connected in parallel, and are each magnetically coupled with the secondary coil
Data Source
AI summary
A radio frequency module includes: a module board that includes a first principal surface and a second principal surface on opposite sides of the module board; a power amplifier; and a first circuit component. The power amplifier includes: a first amplifying element; a second amplifying element; and an output transformer that includes a primary coil and a secondary coil. An end of the primary coil is connected to an output terminal of the first amplifying element, another end of the primary coil is connected to an output terminal of the second amplifying element, an end of the secondary coil is connected to an output terminal of the power amplifier, the first amplifying element and the second amplifying element are disposed on the first principal surface, and the first circuit component is disposed on the second principal surface.