Floating Radiator Antenna Module for mmWave Directivity Control
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Solution Overview
Problem
Existing antenna modules in communication systems face challenges in improving the side ratio, rear ratio, directivity, and reducing surface waves of electromagnetic waves, particularly in high-frequency bands like mmWave.
Innovation Solution
The implementation of a structure with multiple floating radiator arrays spaced apart from antenna arrays on a board, each comprising capacitors and inductors, which are electromagnetically coupled to enhance electromagnetic waves and improve beam directivity and reduce surface waves.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If traditional antenna arrays are used in mmWave bands, then communication systems can operate at high frequencies, but propagation loss increases and transmission distance decreases
Solution Approach 1:
The patent implements a nested structure where floating radiators are positioned above the ground plane at a specific height, creating a nested configuration similar to nested dolls. The floating radiators are electrically connected to the ground plane through feeding structures, forming a nested arrangement that enhances signal propagation and reduces loss at mmWave frequencies
Solution Approach 2:
The patent transitions from a traditional two-dimensional ground plane to a three-dimensional structure by introducing floating radiators at a height above the ground plane. This dimensional change creates additional spatial degrees of freedom for electromagnetic wave propagation, reducing propagation loss and enabling longer transmission distances at high frequencies
2Volume of moving object
If antenna elements are placed closer together to reduce device size, then device compactness improves, but mutual coupling between elements increases
Solution Approach 1:
The patent resolves mutual coupling issues by moving floating radiators from the same plane to a different vertical level above the ground plane. This three-dimensional arrangement maintains compact horizontal footprint while reducing harmful mutual coupling through increased vertical separation and electromagnetic field distribution in the third dimension
3Ease of manufacture
If conventional antenna structures are used, then manufacturing is simple, but side ratio and rear ratio performance are insufficient
Solution Approach 1:
The patent divides the antenna structure into distinct segments: ground plane, feeding structures, and floating radiators. This segmentation allows each component to be optimized independently for both manufacturing ease and performance, achieving improved side and rear ratios while maintaining manufacturability through modular construction
Solution Approach 2:
By adding the vertical dimension with floating radiators positioned above the ground plane, the patent achieves superior side and rear ratio performance without significantly complicating manufacturing. The elevated position creates natural electromagnetic isolation that improves radiation patterns while the structure remains suitable for standard PCB fabrication techniques
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 structure enhances the side and rear ratios, increases beam directivity, and reduces surface waves, thereby improving communication performance and aperture width.
Implementation Method 1
a plurality of floating radiator arrays arranged to be spaced apart from the plurality of antenna arrays by a predetermined distance on the board. The plurality of floating radiator arrays are electromagnetically coupled to the plurality of antenna arrays
Data Source
AI summary
The disclosure relates to a communication technique for merging an IoT technology with a 5th Generation (5G) communication system for supporting a higher data transmission rate than a 4th Generation (4G) system, and a system therefor. The disclosure can be applied to intelligent services (for example, smart homes, smart buildings, smart cities, smart cars or connected cars, healthcare, digital education, retail, security- and safety-related services, and the like) on the basis of 5G communication technologies and IoT-related technologies. An electronic device is provided. The electronic device includes a board, a plurality of antenna arrays arranged on the board, and a plurality of floating radiator arrays arranged on the board to be spaced apart from the plurality of antenna arrays by a predetermined distance. The plurality of floating radiator arrays are electromagnetically coupled to the plurality of antenna arrays.