Floating Radiator Antenna Arrays for Surface Wave Suppression
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Solution Overview
Problem
Existing antenna modules in communication systems face challenges in improving side and rear ratios, 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, each comprising capacitors and inductors, electromagnetically coupled to improve electromagnetic wave radiation and reduce surface waves.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If antenna arrays are used in conventional configurations, then the basic radiation function is achieved, but the side ratio and rear ratio performance deteriorates
Solution Approach 1:
The antenna module is segmented into two distinct functional layers: a first antenna array for primary radiation and a second antenna array (floating radiators) for suppressing unwanted radiation. This segmentation allows each layer to specialize in specific functions, improving side and rear ratios while maintaining manageable complexity through modular design.
Solution Approach 2:
The second antenna array acts as an intermediary element between the first antenna array and the surrounding environment. By positioning floating radiators at specific distances and configuring their impedance, they mediate the electromagnetic field distribution to suppress surface waves and improve radiation patterns without directly modifying the first antenna array.
2Speed
If conventional antenna arrays are used, then radiation coverage is provided, but directivity of beam radiation is insufficient
Solution Approach 1:
The invention transitions from a single-plane antenna configuration to a three-dimensional layered structure. By stacking antenna arrays at different heights (z-dimension) and configuring their spatial relationships, the system achieves enhanced beam directivity and control without significantly increasing in-plane complexity.
3Productivity
If antenna arrays operate at high frequencies (mmWave), then higher data rates are achieved, but surface waves increase and deteriorate performance
Solution Approach 1:
The second antenna array, initially appearing as an added complexity, actually converts the harmful surface wave effect into a beneficial suppression mechanism. By properly tuning the impedance and positioning of floating radiators, they create destructive interference for surface waves while maintaining constructive interference for desired radiation directions, effectively turning potential harm into performance improvement.
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
Enhances communication performance by improving side and rear ratios, increasing directivity, and reducing surface waves, thereby optimizing beam radiation 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.