Motorized Polarization Shifter for 5G Interference Mitigation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current antenna designs face challenges in mitigating or avoiding interference/passive intermodulation (PIM) in 5G networks, particularly due to the complexity of coexisting multiple wireless services and bands without impacting each other, which affects signal quality and performance.
Innovation Solution
The implementation of polarization shifting devices and systems that adjust radiating elements, such as crossed-dipole antenna elements, through physical rotation or shifting along a radial axis, or by altering signal processing, to selectively mitigate or avoid interference by changing the polarization configuration and phase shifts, thereby minimizing interference impact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If polarization shifting is implemented to mitigate interference, then signal quality is improved, but device complexity increases
Solution Approach 1:
The patent implements dynamic polarization shifting by rotating radiating elements based on detected interference characteristics. The system continuously adjusts the polarization orientation of antenna elements to optimize signal reception and mitigate interference, transforming a static antenna system into a dynamic one that adapts to changing electromagnetic environments.
Solution Approach 2:
The system changes the polarization parameter of radiating elements to combat interference. By varying the polarization orientation (e.g., switching between vertical, horizontal, or circular polarization), the system can selectively reject interfering signals while maintaining desired signal quality, effectively using parameter modulation to resolve the technical contradiction.
2Adaptability or versatility
If multiple wireless services and bands coexist in the same antenna system, then service versatility is improved, but interference increases
Solution Approach 1:
The patent segments the antenna system into multiple independent radiating elements, each capable of being individually controlled and optimized for specific frequency bands or services. This segmentation allows the system to handle multiple wireless services simultaneously while minimizing mutual interference through selective polarization adjustment of individual elements.
Solution Approach 2:
The system introduces polarization control as an intermediary mechanism between multiple wireless services sharing the same antenna system. By using polarization states as a separating dimension, the system can multiplex different services on the same physical infrastructure while maintaining signal isolation, effectively mediating the coexistence of multiple bands and services.
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 effectively reduces interference/PIM by optimizing the polarization configuration of radiating elements, enhancing signal quality and performance in multi-band and multi-service wireless environments, improving overall uplink performance and coverage.
Implementation Method 1
a polarization shifter configured to rotate the radiating element in response to the determined characteristic of the interference signal
Implementation Method 2
a motor configured to provide torque to rotate the polarization shifter
Data Source
AI summary
Aspects of the subject disclosure may include, for example, a motorized drive assembly that includes a motor and a drive assembly, where the drive assembly has an axle configured to be disposed through a rotatable substrate of a polarization shifter for a dual-polarized radiating element, the axle being further configured to fasten, at a first end of the axle, to a support structure of the polarization shifter, wherein, when the motorized drive assembly is assembled to the polarization shifter, the motor is controllable to impart rotational forces, via movement of the axle, to the polarization shifter to effect polarization adjusting for the dual-polarized radiating element. Other embodiments are disclosed.