Multi-Port Antenna Layout for Radio Isolation in Dense MIMO
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Solution Overview
Problem
Existing wireless network devices struggle to provide efficient MIMO and MU-MIMO communications in ultra-high density environments due to poor scattering, leading to inter-radio interference and non-uniform signal fidelity, especially in line-of-sight conditions.
Innovation Solution
The design of an antenna system comprising a plurality of directional antennas with orthogonal polarization and radiation patterns, integrated with an interface matrix to achieve isolation and dynamic coverage, enabling concurrent MIMO/MU-MIMO operations in UHD environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple radios operate concurrently in a compact WND, then bandwidth connectivity and data throughput are improved, but inter-radio interference increases due to poor isolation
Solution Approach 1:
The patent employs polarization diversity by orienting antennas with orthogonal polarizations (e.g., vertical vs. horizontal, or different circular polarizations) to separate radio channels. This adds a dimensional separation (polarization dimension) that enables multiple radios to operate concurrently with reduced interference in a compact form factor, resolving the contradiction between high bandwidth connectivity and inter-radio interference.
Solution Approach 2:
The patent assigns different polarization characteristics to different antenna elements within the array. Each antenna or antenna group is configured with specific polarization properties tailored to its function, allowing localized optimization of signal separation and interference reduction while maintaining overall system productivity.
2Reliability
If antenna spacing is increased to provide wireless link isolation, then MIMO and MU-MIMO communication efficiency is improved, but device form factor increases
Solution Approach 1:
Instead of increasing physical spacing between antennas in the horizontal or vertical plane, the patent utilizes the polarization dimension to achieve channel separation. Antennas can be closely spaced in physical space while maintaining isolation through orthogonal polarization orientations, thus preserving MIMO efficiency without increasing device form factor.
Solution Approach 2:
The patent combines multiple antenna elements with different polarization characteristics into a single integrated antenna array structure. This merging allows the system to achieve the isolation equivalent of widely-spaced antennas while maintaining a compact physical footprint, resolving the contradiction between reliability and form factor.
3Object-generated harmful factors
If dual linear polarization antennas are used to implement diversity, then signal isolation is improved, but the number of antennas required increases
Solution Approach 1:
The patent integrates multiple antenna elements with orthogonal polarizations into a unified antenna array system that shares common feeding networks and control mechanisms. This merging approach achieves the signal isolation benefits of multiple polarized antennas while reducing the total quantity of discrete antenna components required, as elements can be closely coupled and share infrastructure.
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
The antenna system provides high isolation between radios, uniform signal fidelity, and efficient MIMO/MU-MIMO communications across large areas, minimizing interference and enhancing data throughput in UHD environments.
Implementation Method 1
Each antenna segment has two antenna feeds to simultaneously radiate two different RF signals with orthogonal polarization
Implementation Method 2
different RF signals are simultaneously radiated in different directions with different radiation patterns
Data Source
AI summary
A wireless network device includes at least one multi-segment, multi-port antennae system and a plurality of radios. Each radio has a plurality of radio frequency (RF) chains.