Antenna Module Side Conductors for Lower Electromagnetic Coupling
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Solution Overview
Problem
Existing antenna devices face challenges in improving radiation efficiency of signals due to electromagnetic coupling between adjacent radiation conductors.
Innovation Solution
The antenna device incorporates a dielectric layer with radiation conductors and ground conductors, featuring side surface conductors with laminated conductor patterns on the outer side of the ground conductor, where the dimensions of these side surface conductors are larger than the radiation conductors, thereby reducing electromagnetic coupling and enhancing radiation efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If radiation conductors are disposed close to each other to reduce device size, then device compactness is improved, but electromagnetic coupling between adjacent radiation conductors increases causing reduced radiation efficiency
Solution Approach 1:
A side surface conductor is introduced as an intermediary element between adjacent radiation conductors. This side surface conductor, having a dimension in the second direction larger than the radiation conductor, acts as a mediator to reduce electromagnetic coupling between radiation conductors while allowing them to be disposed close together, thus maintaining compact device size while improving radiation efficiency
Solution Approach 2:
The side surface conductor extends in the second direction (perpendicular to the first direction) with a dimension larger than the radiation conductor. This dimensional extension in the second direction creates electromagnetic shielding without increasing the footprint in the first direction, allowing compact device layout while reducing coupling effects
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 configuration improves radiation efficiency and reduces electromagnetic coupling between adjacent antenna devices, allowing for improved performance across a wide frequency band.
Implementation Method 1
electromagnetic coupling between adjacent radiation conductors
Data Source
AI summary
An antenna device includes: a dielectric layer; radiation conductors and a ground conductor disposed at the dielectric layer; and side surface conductors in which a plurality of conductor patterns are laminated, the side surface conductors are disposed on an outer side of the ground conductors in a first direction in plan view seen from a normal direction of the radiation conductors, and the dimensions of the side surface conductors in a second direction perpendicular to the first direction are larger than the dimensions in the second direction of the radiation conductors.