PCB Dipole Antenna Coupling Layout for Mutual Interference Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Closely-spaced antennas in IoT devices experience negative coupling issues such as interference, signal distortion, and reduced signal power due to enhanced mutual coupling, which degrade antenna performance and limit design flexibility.
Innovation Solution
The addition of four coupling structures between dipole antennas, optimized using an AI/ML algorithm, generates electromagnetic fields to cancel interference and improve isolation, with parameters determined by an AI/ML algorithm based on electromagnetic simulations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If antennas are closely spaced to reduce device size, then device compactness is improved, but mutual coupling increases causing signal interference and performance degradation
Solution Approach 1:
The patent introduces coupling structures as intermediary elements positioned between the closely-spaced dipole antennas. These coupling structures act as mediators that manipulate the electromagnetic fields to reduce harmful mutual coupling effects, allowing the antennas to maintain close spacing while minimizing interference through the mediating coupling structures.
Solution Approach 2:
The patent employs AI/ML algorithms to optimize parameters of the coupling structures (such as geometry, position, and configuration) to dynamically adjust and control the electromagnetic coupling characteristics. By changing the parameters of the coupling structures, the system achieves reduced mutual coupling while maintaining compact antenna spacing.
2Reliability
If antenna spacing is increased to reduce coupling, then signal quality is improved, but device size increases and design flexibility is reduced
Solution Approach 1:
The coupling structures serve as intermediary elements that enable high signal quality without requiring large antenna spacing. By positioning these structures between the antennas, the system achieves effective coupling control that maintains signal integrity while preserving compact device dimensions.
Solution Approach 2:
The patent introduces coupling structures that operate in the spatial dimension between the antennas, adding another layer of control to the electromagnetic field interaction. This dimensional approach allows the system to manage coupling effects without increasing the overall antenna spacing, thereby maintaining compact device size while improving signal quality.
3Object-affected harmful factors
If coupling structures are added to reduce interference, then antenna isolation is improved, but device complexity increases
Solution Approach 1:
The coupling structures are designed to automatically adjust and optimize their performance through AI/ML algorithms that analyze the electromagnetic environment and dynamically configure the coupling structures. This self-service capability reduces the need for manual tuning and complex control mechanisms, thereby managing device complexity while achieving effective interference reduction.
Solution Approach 2:
The patent uses AI/ML optimization to automatically determine the optimal parameters of the coupling structures, such as geometry, position, and configuration. By automating the parameter optimization process, the system achieves effective interference reduction without requiring complex manual design and adjustment procedures, thereby managing device complexity.
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 enhances antenna isolation and radiation efficiency, improving S21 parameter to −17 dB and S11 parameter to −25 dB, and increasing radiation efficiency from 60% to 73%, thereby reducing interference and enhancing overall antenna performance.
Implementation Method 1
The addition of four coupling structures between dipole antennas, optimized using an AI/ML algorithm, generates electromagnetic fields to cancel interference and improve isolation
Data Source
AI summary
An antenna system. The system comprises first and second spaced-apart antennas each one formed in an upper conductive layer and a lower conductive layer of a printed circuit board. Coupling structures (four coupling structures in one embodiment) disposed between the first and second antennas are formed in either the upper conductive layer or the lower conductive layer and conductively connected to one of the first antenna or the second antenna. The coupling structures formed in the upper conductive layer overlie those formed in the lower conductive layer. The direction of current flow in the coupling structures reduces interference between the electromagnetic fields radiated from the first and the second antennas.