Dual-Polarized Antenna Rotation for PIM Interference Mitigation
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Solution Overview
Problem
The increasing complexity of 5G networks and multiple wireless services require advanced antenna designs to mitigate interference and passive intermodulation (PIM) without impacting each other, which existing technologies struggle to address effectively.
Innovation Solution
Implementing polarization shifting mechanisms for radiating elements, including physical adjustments, signal processing, and structural modifications to selectively mitigate or avoid interference/PIM by controlling the orientation and properties of antenna components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If polarization shifting mechanisms are implemented for radiating elements, then interference/PIM is mitigated and uplink performance is improved, but device complexity increases
Solution Approach 1:
The patent implements dynamic polarization shifting mechanisms that allow radiating elements to adjust their polarization states in real-time based on detected interference conditions. This dynamic adaptation enables the system to mitigate PIM and improve uplink performance by selectively changing polarization orientations, while the automated control reduces the need for complex manual configuration.
Solution Approach 2:
The system changes the polarization parameter of radiating elements to avoid interference. By detecting PIM conditions and adjusting polarization angles or states, the system transforms the operating parameters of the antenna elements to eliminate harmful intermodulation products, thereby improving reliability without requiring complete system redesign.
2Productivity
If multiple wireless services and bands are deployed to meet capacity and throughput requirements, then network capability is enhanced, but interference and PIM increase
Solution Approach 1:
The patent applies different polarization characteristics to different radiating elements or different parts of the antenna system. By assigning specific polarization states to specific services or frequency bands, the system enables multiple wireless services to coexist with reduced mutual interference, thereby maintaining high network capacity while managing PIM through localized polarization optimization.
Solution Approach 2:
The system detects PIM interference and converts it into a useful signal for control purposes. The detected PIM signals are used to automatically adjust polarization settings, transforming the harmful interference into a feedback mechanism that improves system performance by eliminating the source of PIM through intelligent polarization management.
3Reliability
If automated detection and control systems are implemented to mitigate PIM, then interference reduction is achieved, but manufacturing cost and device complexity increase
Solution Approach 1:
The patent implements self-service mechanisms where the antenna system automatically detects PIM interference and adjusts its own polarization settings without external intervention. The built-in detection and control systems enable the system to self-diagnose and self-correct interference issues, reducing the need for complex external control infrastructure and simplifying deployment while maintaining effective PIM mitigation.
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
Enhances uplink performance and coverage by minimizing interference/PIM, allowing for improved data rates and reliability in wireless communications systems.
Implementation Method 1
causing the plurality of dual-polarized radiating elements to incrementally occupy a plurality of rotational positions
Data Source
AI summary
Aspects of the subject disclosure may include, for example, detecting, by a monitoring system associated with a communication system, signals received at an array of orthogonally-polarized radiating elements of an antenna, causing, via a motorized drive assembly, the array of orthogonally-polarized radiating elements to sequentially rotate to a plurality of positions, obtaining, by a control system from the monitoring system and for each of the plurality of positions, data relating to signals from the array of orthogonally-polarized radiating elements, based on the data, determining, by the control system, an optimal position of the plurality of positions for the array of orthogonally-polarized radiating elements at which an impact of passive intermodulation (PIM) on the communications system is minimized, and controlling, by the control system, the motorized drive assembly to cause the array of orthogonally-polarized radiating elements to occupy the optimal position. Other embodiments are disclosed.