MIMO Antenna Spatial Configuration for Signal Isolation
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Solution Overview
Problem
Current MIMO antenna arrangements face challenges in increasing system capacity and efficiency in wireless communication systems, particularly in maintaining signal quality and reducing interference as user data traffic increases.
Innovation Solution
A MIMO antenna configuration featuring a pair of parallel dipole antennas on one surface and a second dipole antenna between them on a substrate, with specific structural components like feeding portions, power dividers, and radiating bodies, optimized for improved radiation patterns and signal isolation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple antennas are spaced apart to decorrelate signals, then system capacity increases, but antenna size and complexity increase
Solution Approach 1:
The patent combines multiple dipole antennas into a compact MIMO antenna assembly where antennas are integrated closely together on a common support structure. This merging approach allows multiple antennas to function together in a unified structure, achieving signal decorrelation through precise geometric positioning while maintaining a compact overall form factor that reduces system complexity.
Solution Approach 2:
The patent utilizes three-dimensional spatial arrangement by positioning antennas at different heights and angles relative to each other on the support structure. This dimensional approach allows signals to be decorrelated through spatial separation in multiple dimensions (vertical, horizontal, and angular) rather than requiring large planar distances, thus increasing capacity without proportionally increasing the antenna footprint.
2Reliability
If antennas are spaced apart to provide orthogonal propagation channels, then signal quality improves, but the physical footprint increases
Solution Approach 1:
The patent applies different spatial configurations and orientations to individual antennas within the assembly. Each antenna is positioned with specific local characteristics (different angles, heights, and orientations) that optimize its radiation pattern and signal properties. This local differentiation allows each antenna to contribute uniquely to orthogonal propagation channels while maintaining a compact overall footprint.
3Ease of manufacture
If dipole antennas are used for MIMO configuration, then manufacturing simplicity is maintained, but signal isolation between antennas becomes challenging
Solution Approach 1:
The patent introduces a common support structure as an intermediary element that holds and positions multiple dipole antennas. This support structure provides precise geometric positioning and spacing between antennas, ensuring adequate signal isolation while maintaining the manufacturing simplicity of using standard dipole antenna elements. The support structure acts as a mediator that enables proper antenna separation without requiring complex antenna designs.
Data Source
AI summary
A MIMO antenna (20) is disposed on a substrate (10) including a first surface (12) and a second surface (14). The MIMO antenna includes a pair of parallel first antennas (30) spaced apart from each other and a second antenna (40) spaced apart from the first antennas. The second antenna is disposed between the first antennas. Each of the first and second antennas is disposed on the first and second surface of the substrate and is a dipole antenna.