Antenna Module Side Metal Plates for Glass-Back Gain Retention
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Radiation gain of antenna modules is degraded due to reflection and loss caused by high dielectric constant materials such as glass in mobile terminals.
Innovation Solution
A device with a metal member surrounding the antenna module, comprising multiple metal plates arranged closer to the high dielectric constant member than the antenna module, to reflect and emit radio waves effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the back surface of the terminal device is made of a high dielectric constant member such as glass, then the appearance and structural integrity are improved, but the radiation gain of the antenna module is degraded due to reflection or loss
Solution Approach 1:
A metal plate is introduced as an intermediary component between the antenna module and the high dielectric constant member. The metal plate reflects radio waves that would otherwise be lost to the high dielectric constant member, redirecting them toward the radiation direction. This intermediary structure resolves the contradiction by preventing direct interaction between the antenna radiation and the harmful high dielectric constant material, thereby maintaining both the aesthetic/structural benefits of the glass back surface and the radiation performance of the antenna module
2Device complexity
If the antenna module is mounted on the back surface of the terminal device, then the device integration is improved, but the radiation gain is degraded due to proximity to the high dielectric constant member
Solution Approach 1:
The metal plate serves as a mediator that enables close integration of the antenna module with the device back surface while preventing performance degradation. By positioning the metal plate between the antenna module and the high dielectric constant member, the design achieves both goals: the antenna module remains integrated into the device structure, and the metal plate prevents harmful interactions with the high dielectric constant material
3Reliability
If metal plates are added to cover side surfaces of the antenna module, then the radiation gain is improved by suppressing harmful reflections, but the device complexity increases
Solution Approach 1:
Instead of uniformly shielding all surfaces around the antenna module, the invention applies metal plates selectively only to the side surfaces that face the high dielectric constant member. This localized approach addresses the specific problem areas where reflection and loss occur, while leaving other areas unaffected. The result is an optimized solution that improves radiation gain without unnecessarily increasing device complexity across the entire structure
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
Suppresses degradation in radiation gain by reflecting radio waves away from the high dielectric constant material, ensuring effective radio wave transmission.
Implementation Method 1
there is a problem that a radiation gain of the antenna module is degraded due to reflection or loss caused by the high dielectric constant member
Data Source
AI summary
A device includes a first metal plate and a second metal plate. The first metal plate is arranged to cover at least part of a first side surface in a longitudinal direction of an antenna module having a main radiation unit of substantially rectangular shape. The second metal plate is arranged to cover at least part of a second side surface in the longitudinal direction of the antenna module, the second side surface being different from the first side surface. The antenna module is arranged so that the main radiation unit faces a high dielectric constant member of a housing. A first distance (d3) between an end side of the first metal plate and the high dielectric constant member is smaller than a distance (d2) between the main radiation unit and the high dielectric constant member. A second distance (d3) is smaller than the distance (d2).