Antenna Module Shielding Structure for Isolation in Compact 5G Arrays
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Solution Overview
Problem
The miniaturization of 5G antenna elements in mobile devices leads to reduced antenna distance, resulting in poor antenna gain and increased electromagnetic interference, which affects the electrical quality of wireless communication.
Innovation Solution
An antenna module design featuring a plate body with arrayed antenna structures and interposed shielding structures, including concave portions and dielectric materials, creating a substrate with discontinuous impedance distribution to enhance antenna isolation and gain.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If antenna elements are miniaturized to reduce device size, then device compactness is improved, but antenna gain deteriorates due to reduced distance between antennas
Solution Approach 1:
A shielding structure comprising a concave portion and dielectric material is introduced as an intermediary element between adjacent antenna structures. The concave portion is formed on the plate body and filled with dielectric material to create a shielding effect that prevents electromagnetic interference while allowing the antenna elements to be closely spaced for miniaturization.
Solution Approach 2:
The shielding structure is locally positioned between specific adjacent antenna structures rather than uniformly distributed. The concave portion is strategically formed on the plate body at locations where electromagnetic interference is most problematic, providing localized shielding while maintaining overall antenna performance and compactness.
2Volume of moving object
If antenna elements are miniaturized to reduce device size, then device compactness is improved, but electromagnetic interference increases between adjacent antennas
Solution Approach 1:
The shielding structure with dielectric material serves as a mediator that blocks electromagnetic fields between closely spaced antenna elements. The dielectric material in the concave portion absorbs or reflects electromagnetic waves, preventing interference while allowing the miniaturized antenna layout to function properly.
Solution Approach 2:
The dielectric material in the shielding structure converts the potentially harmful electromagnetic interference into beneficial effects by absorbing excess electromagnetic energy and redirecting it, thereby improving overall antenna system performance while maintaining compact dimensions.
3Object-generated harmful factors
If shielding structures are added between antenna elements to prevent interference, then electromagnetic interference is reduced, but device complexity increases
Solution Approach 1:
The shielding structure is merged with the plate body by forming the concave portion directly on it, integrating the shielding function into the existing substrate rather than adding separate components. This reduces overall device complexity while maintaining effective electromagnetic interference protection.
Solution Approach 2:
The plate body serves multiple functions: it provides mechanical support for the antenna elements and simultaneously acts as a substrate for the shielding structure through the concave portion. This multi-functionality reduces the need for additional separate components, simplifying the overall antenna module design.
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 design maintains good antenna signal and increases gain while reducing size, improving antenna operation efficiency and flexibility, and preventing electromagnetic interference.
Implementation Method 1
a dielectric material located between the concave portion and the plurality of antenna structures
Data Source
AI summary
An antenna module is provided with a plurality of antenna structures and a shielding structure arranged on a plate body, and the shielding structure is located between two adjacent antenna structures, where the shielding structure includes a concave portion formed on the plate body and a dielectric material formed between the concave portion and the antenna structure to generate different impedance characteristics, thereby improving the antenna isolation.