Alternating Polarization in Panel MIMO Antennas to Reduce Beam Interference
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Solution Overview
Problem
Existing MIMO antenna systems face challenges in maintaining beam isolation and minimizing interference, particularly in densely populated urban areas with high-rise buildings, which affect signal quality and data speeds due to interference and passive intermodulation (PIM) issues, especially in 5G networks with increased antenna density and complex beamforming requirements.
Innovation Solution
Implementing polarization adaptation in panel MIMO antennas to adjust orthogonal signal polarizations dynamically, using equations to rotate signals in the RF domain for transmission and reception, thereby reducing interference and enhancing signal-to-interference-plus-noise ratio (SINR) across multiple frequency bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If antenna density is increased to meet 5G capacity requirements, then network capacity and throughput are improved, but beam interference and passive intermodulation (PIM) increase
Solution Approach 1:
The patent changes the polarization parameter of antenna elements dynamically. By alternating between horizontal and vertical polarization states of adjacent antenna elements, the system creates orthogonal polarization pairs that reduce beam interference and PIM while maintaining high antenna density for 5G capacity requirements
Solution Approach 2:
The patent creates a composite polarization structure where adjacent antenna elements have different polarization characteristics. This composite approach combines horizontally and vertically polarized elements in a unified array, enabling simultaneous support for multiple polarization states and reducing interference through polarization diversity
2Productivity
If antenna density is increased to meet 5G capacity requirements, then network capacity and throughput are improved, but passive intermodulation (PIM) increases
Solution Approach 1:
The patent dynamically adjusts the polarization parameter of antenna elements to alternate between horizontal and vertical states. This parameter change creates orthogonal polarization pairs that minimize passive intermodulation products while maintaining the high antenna density needed for 5G network capacity
Solution Approach 2:
The patent converts the potential harmful effect of dense antenna placement (which causes PIM) into a benefit by using the density to create more orthogonal polarization pairs. The high antenna density enables more alternating polarization patterns, which actually reduces PIM by creating more frequency-diverse paths
3Reliability
If polarization adaptation is implemented to reduce interference, then beam isolation and signal quality are improved, but device complexity increases
Solution Approach 1:
The patent implements dynamic polarization control where antenna elements can switch between horizontal and vertical polarization states. This dynamic adaptation allows the system to respond to changing interference conditions and optimize beam isolation in real-time, improving signal quality through adaptive polarization management
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 beam isolation and reduces interference, improving antenna performance and reducing size requirements by optimizing beamforming and minimizing PIM, thus enhancing signal quality and data speeds in 5G networks.
Implementation Method 1
polarization adaptation in panel MIMO antennas to adjust orthogonal signal polarizations dynamically, using equations to rotate signals in the RF domain
Data Source
AI summary
Aspects of the subject disclosure may include, for example, polarization adaptation in panel MIMO antennas to improve isolation between downlink beams so as to reduce or minimize beam interference, which improves antenna performance and/or reduces antenna size requirements. Other embodiments are disclosed.