MIMO Antenna Layout With Isolation Components for Uniform Wi‑Fi Coverage
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Solution Overview
Problem
Existing wireless communication systems, particularly in environments like airports and commercial buildings, face issues of low isolation, high noise interference, uneven signal coverage, and blind spots due to the development of high-throughput Wi-Fi protocols such as 802.11be, which exacerbate these problems.
Innovation Solution
The antenna system employs a dual-band and single-band MIMO antennas with specific resonance structures and polarizations, combined with isolation components and AUX antennas, to achieve isotropic radiation patterns and improve signal isolation beyond 30 dB, thereby addressing blind spots and uneven coverage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high-throughput Wi-Fi protocols (802.11be) are deployed to improve bandwidth and throughput, then data transmission capacity is improved, but noise interference and signal isolation deteriorate
Solution Approach 1:
The antenna system divides the wireless communication function into multiple independent MIMO antenna elements (at least two antennas) operating in different spatial locations. Each antenna handles specific data streams separately, allowing the system to maintain high throughput while reducing interference through spatial separation and independent signal processing paths.
Solution Approach 2:
The patent transitions from single-antenna or co-located antenna arrangements to spatially distributed MIMO antenna configurations. By adding the spatial dimension with multiple antennas at different positions, the system achieves both high throughput (through parallel data streams) and reduced interference (through spatial separation), effectively resolving the contradiction between productivity and harmful factors.
2Device complexity
If conventional antenna arrangements are used to simplify device structure, then device complexity is reduced, but signal coverage uniformity and isolation deteriorate
Solution Approach 1:
The antenna system is segmented into multiple functional components: multiple MIMO antennas with specific polarization orientations, isolation components positioned between antennas, and auxiliary antennas. This segmentation allows each component to perform its specialized function while collectively achieving uniform coverage and high isolation without excessive overall complexity.
Solution Approach 2:
Isolation components are introduced as intermediary elements positioned between adjacent MIMO antennas. These intermediaries physically separate the antenna elements and reduce mutual interference, enabling the system to maintain simple overall structure while achieving improved signal isolation and coverage uniformity through the mediating isolation components.
3Area of stationary object
If antennas are placed closer together to reduce device size, then compactness is improved, but signal isolation and coverage uniformity deteriorate
Solution Approach 1:
Instead of increasing separation distance in the horizontal plane (which would increase footprint), the patent utilizes the vertical dimension and three-dimensional spatial arrangement. MIMO antennas are positioned at different heights and orientations, with isolation components placed in the vertical and lateral spaces between them. This 3D configuration achieves adequate isolation while maintaining a compact overall footprint.
Solution Approach 2:
Isolation components serve as intermediary elements that enable closer antenna placement by providing electromagnetic shielding and isolation. These components are positioned in the limited space between adjacent antennas, allowing the system to achieve high isolation ratios even with reduced antenna spacing, thus maintaining compactness without sacrificing isolation performance.
4Device complexity
If single-band antennas are used to simplify the antenna system, then device complexity is reduced, but adaptability to different frequency bands deteriorates
Solution Approach 1:
The MIMO antenna system is designed with universal antennas capable of operating across multiple frequency bands (2.4 GHz, 5 GHz, and 6 GHz). Each antenna element is configured to support multiple bands, allowing the same physical antenna structure to perform multiple functions and serve different wireless standards, thereby achieving high adaptability without increasing device complexity.
Solution Approach 2:
The antenna system achieves multi-band support through parameter optimization rather than structural complexity. By adjusting antenna dimensions, spacing, and electrical characteristics, the same antenna configuration can resonate at multiple frequency bands. This parameter-based approach enables adaptability across 2.4 GHz, 5 GHz, and 6 GHz bands while maintaining a relatively simple and unified antenna structure.
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 solution ensures effective and uniform signal coverage by achieving isotropic radiation fields and high isolation between antennas, effectively mitigating interference and blind spots in high-throughput wireless communication systems.
Implementation Method 1
a first dual-band antenna, a second dual-band antenna, a first single-band antenna and a second single-band antenna, wherein the first dual-band antenna is provided with a high-frequency resonance structure Z1 perpendicular to a base (2) and arranged at a first corner of the base (2)
Data Source
AI summary
An antenna system includes: a first group of MIMO antennas including a first dual-band antenna arranged at first corner of the base, a second dual-band antenna arranged on a first side of the base, a first single-band antenna arranged at a second corner of the base, a second single-band antenna parallel to the base; a second group of MIMO antennas including a third single-band antenna vertically arranged in a third corner of the base, a fourth single-band antenna arranged at a fourth corner of the base, a fifth single-band antenna in planar structure, a sixth single-band antenna arranged between the first single-band antenna and the third single-band antenna; a first isolation component arranged between the second dual-band antenna and the fifth single-band antenna; a second isolation component arranged between the second single-band antenna and the sixth single-band antenna.