Antenna Element Polarization Tuning for Uplink Interference
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Solution Overview
Problem
The increasing complexity of 5G networks and coexistence of multiple wireless services and networks leads to interference and passive intermodulation (PIM) issues, which affect uplink sensitivity, coverage, and performance in antenna systems.
Innovation Solution
An interference/PIM cancellation system that detects and mitigates interference by adjusting polarization and phase of antenna elements, particularly in the intermediate field region, using mechanisms such as physical rotation, shifting, and signal processing to minimize interference impact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple wireless services and networks are deployed to increase capacity and throughput, then network capability is improved, but interference and passive intermodulation issues worsen
Solution Approach 1:
The antenna system is divided into multiple independently controllable antenna elements, each capable of having its polarization adjusted separately. This segmentation allows the system to address interference from different directions and frequencies individually, enabling selective mitigation of harmful interactions while maintaining overall network capacity.
Solution Approach 2:
The polarization of antenna elements is made dynamically adjustable rather than fixed. By continuously or adaptively changing polarization angles and orientations, the system can respond to varying interference conditions in real-time, maintaining optimal performance as network traffic and interference patterns evolve.
2Reliability
If antenna polarization is adjusted to mitigate interference, then uplink performance is improved, but system complexity increases
Solution Approach 1:
The system incorporates feedback mechanisms that monitor interference levels and uplink performance, automatically adjusting antenna polarizations based on measured conditions. This closed-loop control simplifies operation by eliminating manual configuration while improving uplink sensitivity through adaptive interference mitigation.
Solution Approach 2:
The antenna system performs self-configuration and self-optimization by automatically detecting interference patterns and adjusting its own polarization settings without external intervention. This self-service capability reduces operational complexity while maintaining optimal uplink performance.
3Reliability
If guard bands and duplexers are used to prevent interference, then signal quality is maintained, but frequency utilization and network efficiency decrease
Solution Approach 1:
The system changes the polarization parameter of antenna elements to achieve interference rejection traditionally requiring guard bands and duplexers. By manipulating polarization angles and orientations, the system can separate signals in the frequency domain without actual frequency separation, enabling closer frequency spacing and higher utilization.
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 reducing interference, allowing for improved network speeds and potentially eliminating guard bands and duplexers through orthogonal polarization adjustments.
Implementation Method 1
altering one or more properties of the one or more radiating elements to effect polarization adjusting that minimizes an impact of the interference on the antenna system
Implementation Method 2
altering one or more properties of the one or more radiating elements to effect phase shifting that minimizes an impact of the interference on the antenna system
Data Source
AI summary
Aspects of the subject disclosure may include, for example, identifying one or more radiating elements of an antenna system that are to be adjusted based on interference determined to affect an operation of the antenna system, and altering one or more properties of the one or more radiating elements to effect polarization adjusting such that an impact of the interference on the antenna system is minimized. Other embodiments are disclosed.