Antenna Module Conductive Shield for Noise Interference
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In devices with limited space, such as rotatable parts of network cameras, existing wireless power and data transmission systems face challenges due to noise interference from harmonic frequency noise, which affects data communication speed and power transmission efficiency.
Innovation Solution
An antenna module with a circuit substrate, a communication coupler for data transmission, a power transmission coil, and a conductive shield plate that overlaps the communication coupler to suppress noise, while maintaining power transmission efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a communication coupler and power transmission coil are integrated in a limited space, then miniaturization is achieved, but noise interference from harmonic frequency increases
Solution Approach 1:
A conductive plate is introduced as an intermediary component between the communication coupler and the power transmission coil. This plate acts as a shield that blocks electromagnetic noise from the power transmission coil from interfering with the communication coupler, while allowing both components to remain integrated in a compact module.
Solution Approach 2:
The internal structure of the integrated module is segmented by positioning the conductive plate to divide the space around the communication coupler. This segmentation creates isolated zones that prevent noise propagation from the power transmission coil to the communication coupler, enabling compact integration without sacrificing performance.
2Speed
If the communication coupler is shielded from noise, then data communication speed is improved, but power transmission efficiency may decrease
Solution Approach 1:
The conductive plate is positioned to provide localized shielding only around the communication coupler, rather than enclosing the entire module. This localized approach blocks noise interference with the communication function while leaving the power transmission path between the coils unobstructed, thus maintaining power transmission efficiency.
Solution Approach 2:
The conductive plate creates an electromagnetic shield that replicates the function of a larger enclosure by providing a localized reflective barrier. This allows the noise shielding effect to be achieved with a minimal structure that does not interfere with power transmission, effectively copying the protective function in a space-efficient manner.
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 reduces noise interference, enhancing data communication speed and maintaining high power transmission efficiency, even in space-constrained environments.
Implementation Method 1
a communication coupler disposed on the circuit substrate and configured to wirelessly communicate data by electromagnetic coupling with another communication coupler
Implementation Method 2
a power transmission coil disposed on the circuit substrate and configured to wirelessly transmit power by electromagnetic coupling to another power transmission coil
Data Source
AI summary
An antenna module comprises a circuit substrate, a communication coupler disposed on the circuit substrate, and configured to wirelessly communicate data by electromagnetic coupling with another communication coupler, a power transmission coil disposed on the circuit substrate and configured to wirelessly transmit power by electromagnetic coupling to another power transmission coil, and a conductive plate disposed on the circuit substrate, and overlapping on at least a portion of the communication coupler as viewed from a direction orthogonal to the substrate.