Antenna Array Coupling Structure for Side Lobe Suppression
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Solution Overview
Problem
Existing antenna designs suffer from high side lobe radiation, which degrades communication quality in mobile devices.
Innovation Solution
An antenna system incorporating a floating metal element adjacent to an antenna array, with a controlled coupling distance, to suppress side lobe radiation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If conventional antenna designs are used, then the antenna structure is simple, but side lobe radiation is high which degrades communication quality
Solution Approach 1:
A floating metal element is introduced as an intermediary component between the antenna array and the surrounding environment. This element interacts with the electromagnetic fields radiated by the antenna array, specifically targeting and suppressing side lobe radiation through electromagnetic coupling, while maintaining a relatively simple overall structure
Solution Approach 2:
The patent optimizes specific parameters including the coupling distance between the floating metal element and the antenna array, the dimensions and shape of the floating metal element, and its positional configuration. These parameter adjustments enable effective side lobe suppression with minimal structural complexity
2Volume of moving object
If antenna size is reduced for mobile devices, then portability is improved, but side lobe radiation control becomes more difficult
Solution Approach 1:
The floating metal element is strategically positioned and configured to specifically target side lobe regions rather than uniformly treating the entire antenna radiation pattern. This localized approach allows effective side lobe suppression in a compact antenna system without requiring proportional increases in overall size
Solution Approach 2:
The compact floating metal element serves as a space-efficient intermediary that provides side lobe control functionality within the constrained volume of mobile devices, enabling radiation pattern control without proportionally increasing antenna system size
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 floating metal element significantly reduces side lobe radiation by 3.5 to 4.4 dB, enhancing spatial efficiency and communication quality.
Implementation Method 1
A coupling distance is formed between the floating metal element and the antenna array. The floating metal element is configured to suppress the side lobe radiation of the antenna array.
Data Source
AI summary
An antenna system includes an antenna array and a floating metal element. The antenna array includes a plurality of antenna units. The floating metal element is adjacent to the antenna array. A coupling distance is formed between the floating metal element and the antenna array. The floating metal element is configured to suppress the side lobe radiation of the antenna array.