Multi-Radiator MIMO Antenna Layout for Directional Coverage
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Solution Overview
Problem
Existing antenna devices are constrained in terms of radiation directionality, often supporting only a single radiation direction, and require enhancement in performance metrics such as cumulative distribution function (CDF), while also needing to be miniaturized.
Innovation Solution
The antenna design includes M radiators and M feeding elements, where the radiators wirelessly access a set of first signals, and the feeding elements, formed below the radiators and connected to a processing circuit, access a set of second signals, enabling multiple radiation directions and improved performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing antenna designs are used, then the structure is simple, but the radiation directionality is limited to a single direction
Solution Approach 1:
The antenna is divided into multiple independent radiating elements (first radiator, second radiator, third radiator, fourth radiator) arranged in a planar configuration. Each element can be independently controlled to radiate in different directions, enabling multi-directional coverage while maintaining a relatively simple overall structure.
Solution Approach 2:
Multiple radiating elements are combined into a single antenna device with shared feeding networks and control circuits. The first and second radiators form one polarization component while the third and fourth radiators form another, merging multiple functions into an integrated multi-directional antenna system.
2Volume of moving object
If antenna size is reduced, then portability is improved, but performance metrics such as CDF deteriorate
Solution Approach 1:
The antenna employs a three-dimensional planar configuration with radiators arranged in both horizontal and vertical dimensions. The feeding elements are positioned at different heights and locations, creating a spatial distribution that enhances performance metrics while maintaining a compact overall footprint suitable for portable devices.
Solution Approach 2:
Different radiating elements are optimized for different local functions - some elements are configured for horizontal polarization while others for vertical polarization, and each element's geometry and positioning are locally optimized to contribute to overall performance while maintaining compact dimensions.
3Adaptability or versatility
If multiple radiators are added to improve radiation directionality, then the antenna size increases
Solution Approach 1:
The antenna elements are arranged in a nested or compact planar configuration where the first and second radiators are positioned adjacent to each other, and the third and fourth radiators are similarly positioned. The feeding elements are integrated into the same planar structure, creating a space-efficient multi-element antenna that achieves multi-directional radiation without requiring large area.
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 design enhances radiation directionality, improves performance metrics, and minimizes the physical size of the antenna, supporting diverse applications including MIMO devices and high-frequency communications.
Implementation Method 1
The M radiators can be used to wirelessly access a set of first signals
Data Source
AI summary
An antenna includes M radiators and M feeding elements. The M radiators can be used to wirelessly access a set of first signals. The M feeding elements can be formed below the M radiators, connected to a processing circuit, and used to access a set of second signals corresponding to the set of first signals between the M feeding elements and the processing circuit. M can be a positive integer larger than 3.