Rotating Antenna Elements for Intermediate-Field Interference Mitigation
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Solution Overview
Problem
Current antenna technologies face challenges in effectively mitigating interference and passive intermodulation (PIM) in wireless communications systems, particularly in the intermediate field region, which affects signal quality and data speeds.
Innovation Solution
The implementation of an interference/PIM cancellation system that detects interference in the intermediate, near-field, and far-field regions by performing polarization adjusting and phase shifting/delaying of antenna elements, allowing for selective cancellation of interference through physical and electronic adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional antenna designs are used, then antenna structure is simple, but interference and PIM cannot be effectively mitigated in the intermediate field region
Solution Approach 1:
The antenna system is divided into multiple independently controllable antenna elements arranged in a specific geometry. Each element can be individually adjusted in terms of phase, amplitude, and polarization, allowing the system to segment the interference mitigation task across multiple elements rather than requiring a completely different antenna structure.
Solution Approach 2:
The antenna system implements dynamic adjustment capabilities through phase shifters, amplitude controllers, and polarization adjusters that can modify the radiation pattern in real-time. This dynamic behavior allows the system to adapt to changing interference conditions and create nulls toward interference sources, resolving the contradiction between simple structure and effective interference mitigation.
2Reliability
If polarization adjusting and phase shifting are implemented, then interference cancellation is achieved, but system complexity increases
Solution Approach 1:
The system incorporates feedback mechanisms where the signal from each antenna element is monitored, and the phase, amplitude, and polarization are adjusted based on the detected interference characteristics. This feedback loop enables automatic interference cancellation without requiring complex manual control, as the system self-adjusts to optimize performance.
Solution Approach 2:
The patent replaces mechanical adjustment mechanisms with electronic control systems. Instead of physically moving antenna elements or changing polarization mechanically, the system uses electronic phase shifters, amplitude controllers, and polarization adjusters that can be rapidly reconfigured through electrical signals, reducing mechanical complexity while maintaining control capability.
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
This approach enhances signal quality and data speeds by minimizing interference in the uplink signals, improving overall network performance and coverage without significantly impacting the far-field region.
Implementation Method 1
perform polarization adjusting by rotating one or more radiating elements of the antenna system such that an impact of the interference on the antenna system is minimized
Implementation Method 2
perform phase shifting/delaying of antenna elements, allowing for selective cancellation of interference
Data Source
AI summary
Aspects of the subject disclosure may include, for example, obtaining data regarding interference detected in a received communication signal, and performing polarization adjusting by rotating one or more radiating elements of an antenna system such that an impact of the interference on the antenna system is minimized. Other embodiments are disclosed.