Dynamic MIMO Antenna Configuration for RF Interference Management
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional MIMO mobile computing products face interference challenges due to the close proximity of antennas to noise sources like embedded display port (eDP) components, leading to compromised performance in interference-sensitive frequency bands such as 2.4 GHz Wi-Fi, while less interference-sensitive bands like 5 GHz Wi-Fi can utilize all available antennas for optimal performance.
Innovation Solution
Implementing a dynamic MIMO configuration that selectively activates a subset of antennas based on the interference characteristics of the system and the current RF band, ensuring maximum performance in less interference-sensitive bands while minimizing noise interference in more sensitive bands by strategically placing antennas to maintain adequate separation from noise sources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple MIMO antenna elements are co-located in a small space to achieve high-density antenna configuration, then antenna integration is improved, but RF interference from nearby noise sources increases
Solution Approach 1:
The patent implements dynamic MIMO configuration that allows the antenna system to adapt its operation in real-time based on detected interference conditions. The system can dynamically select between different MIMO modes (e.g., 2x2, 3x3, 4x4) and reconfigure which antenna elements are active, transforming a static antenna system into a dynamic one that responds to changing RF environment conditions, thereby resolving the contradiction between high integration and interference avoidance
Solution Approach 2:
The system changes operational parameters (which antenna elements are active, MIMO configuration mode) based on detected interference levels. By monitoring RF conditions and adjusting antenna element selection and MIMO configuration parameters, the system optimizes performance by activating only those antenna elements that are sufficiently isolated from noise sources, thus resolving the contradiction between antenna integration density and RF interference
2Object-affected harmful factors
If antenna elements are separated by at least one quarter wavelength to achieve satisfactory antenna isolation, then RF interference is reduced, but available space for antenna placement increases
Solution Approach 1:
The patent segments the antenna system into multiple independently controllable antenna elements that can be selectively activated. Instead of treating the MIMO antenna system as a fixed unified structure, it divides it into individual elements that can be independently managed, allowing the system to activate only the subset of elements that meet isolation requirements, thereby achieving both compact placement and sufficient isolation
Solution Approach 2:
The system dynamically determines which antenna elements to activate based on real-time interference detection. This dynamic element selection allows the system to achieve effective isolation without requiring all antenna elements to be physically separated by quarter-wavelength distances, as only the actively used elements need to maintain proper isolation from each other and noise sources
3Reliability
If a subset of antenna elements is activated to reduce RF interference in sensitive frequency bands, then wireless performance is improved, but the number of active antennas decreases
Solution Approach 1:
The patent implements dynamic MIMO configuration that adapts the number of active antenna elements based on frequency band and interference conditions. In sensitive bands like 2.4 GHz with high interference, the system dynamically reduces to a smaller subset of well-isolated elements to ensure reliable performance. In less sensitive bands like 5 GHz with lower interference, the system dynamically activates more antenna elements to maximize data transmission capacity, thus resolving the contradiction between reliability and productivity across different operating conditions
Solution Approach 2:
The system changes the MIMO configuration parameters (number of transmit and receive antennas) based on detected RF conditions. By monitoring interference levels and adjusting the MIMO mode parameters accordingly, the system optimizes the trade-off between reliable performance (using fewer well-isolated antennas in noisy conditions) and transmission capacity (using more antennas in cleaner conditions), resolving the contradiction between reliability and productivity
Data Source
AI summary
Systems and methods may be implemented with MIMO antenna architectures (e.g., such as 2×2, 3×3, 4×4, etc.) of a given mobile information handling system to selectively use dynamic MIMO configuration and/or reconfiguration to select only a subset of the available multiple antenna elements or all of the available multiple antenna elements for receive and/or transmit operation based on the interference characteristics of the given mobile information handling system and/or based on the current radio frequency (RF) band currently being used for wireless communications by the mobile information handling system.