RF Module Inductor Layout for Low-Noise Amplifier Noise Figure
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Solution Overview
Problem
Existing radio-frequency modules face challenges in reducing the noise figure of low-noise amplifiers, which affects the overall performance of communication devices.
Innovation Solution
The proposed solution involves a radio-frequency module design with a mount board, antenna terminal, ground terminal, low-noise amplifier, first inductor, and second inductor, where the first inductor is connected to the antenna terminal, and the second inductor is connected between the transistor and the ground terminal, optimizing their placement to minimize magnetic coupling and reduce noise figure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the first inductor and second inductor are disposed on the same surface of the mount board, then the device complexity is reduced, but the magnetic coupling between inductors increases causing higher noise figure
Solution Approach 1:
The patent applies dimensionality change by disposing the first inductor on one surface of the mount board and the second inductor on the opposite surface. This spatial separation in the third dimension (thickness direction) effectively reduces magnetic coupling between the inductors, thereby lowering the noise figure of the low-noise amplifier without significantly increasing device complexity.
2Object-affected harmful factors
If the first inductor is connected to the antenna terminal and the second inductor is connected between the transistor and ground terminal, then the noise figure is reduced, but the device complexity increases
Solution Approach 1:
The patent segments the inductor configuration by using two separate inductors with distinct connections: the first inductor connected to the antenna terminal and the second inductor connected between the transistor and ground terminal. This segmentation allows independent optimization of each inductor's function, reducing magnetic coupling and noise figure while maintaining a manageable circuit configuration.
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 design effectively reduces the noise figure of low-noise amplifiers, enhancing the performance of communication devices by suppressing magnetic coupling between inductors.
Implementation Method 1
The second inductor is magnetically coupled to the first inductor
Data Source
AI summary
A radio-frequency module includes a mount board, an antenna terminal and a ground terminal, a low-noise amplifier, a first inductor, and a second inductor. The mount board has a first principal surface and a second principal surface on opposite sides of the mount board from one another. The low-noise amplifier includes a transistor configured to amplify a signal. The first inductor is disposed on one of the first principal surface and the second principal surface of the mount board. The first inductor is connected to the antenna terminal. The second inductor is disposed on the other of the first principal surface and the second principal surface of the mount board. The second inductor is connected between the transistor and the ground terminal.