Antenna Module Impedance Shielding for Closely Spaced Elements
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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 the device size is reduced, but the distance between antennas is reduced resulting in poor antenna gain and increased electromagnetic interference
Solution Approach 1:
The patent divides the antenna system into multiple antenna elements arranged in an array, with each element being a miniaturized structure. By segmenting the antenna into multiple elements with specific spacing and introducing shielding structures between them, the patent achieves both miniaturization and maintained signal quality through the collective performance of the array rather than relying on single large antenna elements
Solution Approach 2:
The patent introduces shielding structures as intermediary elements positioned between adjacent antenna elements. These shielding structures mediate the electromagnetic interaction between closely-spaced antenna elements, preventing harmful electromagnetic interference while allowing the miniaturized antenna elements to maintain their required spacing for adequate gain performance
2Volume of moving object
If antenna elements are miniaturized to reduce device size, then the device size is reduced, but electromagnetic interference between antennas increases
Solution Approach 1:
The shielding structures serve as intermediary elements that block and redirect electromagnetic fields between adjacent antenna elements. By positioning these shielding structures in the spaces between miniaturized antenna elements, the patent prevents direct electromagnetic coupling that would cause interference, while still allowing the compact antenna array to function effectively
Solution Approach 2:
The patent converts the potentially harmful electromagnetic fields that would cause interference into beneficial patterns by using the shielding structures to redirect and contain the electromagnetic energy. The shielding structures transform what would be harmful radiated fields into controlled field patterns that improve overall antenna performance and reduce mutual interference
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 quality and increases antenna gain while reducing size, improving antenna operation efficiency and flexibility, and preventing electromagnetic interference.
Implementation Method 1
at least one shielding structure disposed on the plate body and located between the two adjacent antenna structures... the at least one shielding structure includes a concave portion disposed on the plate body and a dielectric material located between the concave portion and the plurality of antenna structures
Implementation Method 2
a dielectric material located between the concave portion and the plurality of antenna structures... the plate body, the plurality of antenna structures and the at least one shielding structure form a substrate with discontinuous impedance distribution
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.