Antenna Module With Segmented Housing For Wearable Devices
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Solution Overview
Problem
Wearable devices with metal housings face challenges in maintaining effective wireless communication due to user interference, which affects the radiating performance of the antenna module, especially when the housing is made of conductive materials.
Innovation Solution
The antenna module design incorporates a conductive main body and an insulating second housing, which reduces user interference by shielding the influence on the antenna, and can be electrically connected or disconnected from the baseboard to optimize performance across different frequency bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a metal housing is used for heat dissipation, then heat dissipation performance is improved, but user interference with the antenna increases
Solution Approach 1:
The housing is divided into a first housing portion and a second housing portion. The first housing portion is made of conductive material for heat dissipation, while the second housing portion is made of insulating material to reduce user interference with the antenna. This segmentation allows each portion to fulfill its specific function without compromising the other.
Solution Approach 2:
Different portions of the housing have different material properties tailored to their specific functions. The first housing portion (conductive) is positioned where heat dissipation is needed, while the second housing portion (insulating) is positioned where antenna performance is critical. This local differentiation of material quality optimizes both heat dissipation and antenna performance simultaneously.
2Temperature
If a conductive housing is used, then heat dissipation is improved, but radiating performance of the antenna deteriorates
Solution Approach 1:
The housing is segmented into conductive and insulating portions, allowing the insulating second housing portion to protect the antenna's radiating performance while the conductive first housing portion handles heat dissipation.
Solution Approach 2:
The housing exhibits local quality differentiation with conductive material in the first portion for heat management and insulating material in the second portion for antenna performance, resolving the contradiction between heat dissipation and radiating performance.
3Stability of the object's composition
If the housing is electrically connected to the baseboard, then structural stability is improved, but antenna performance may be affected
Solution Approach 1:
The housing is divided into two portions with different electrical properties. The insulating second housing portion electrically isolates the antenna from the baseboard, preventing interference while the conductive first housing portion maintains structural stability through electrical connection.
Solution Approach 2:
The insulating second housing portion acts as an intermediary between the antenna and the external environment, providing electrical isolation that protects antenna performance while allowing the structure to remain stable.
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 design enhances the radiating performance and scattering parameters of the antenna module, improving communication efficiency by minimizing user interference, as demonstrated by the radiating efficiency graphs across various configurations.
Implementation Method 1
an insulating second housing, which reduces user interference by shielding the influence on the antenna
Implementation Method 2
The antenna module design incorporates a conductive main body and an insulating second housing, which reduces user interference by shielding the influence on the antenna
Data Source
AI summary
An antenna module includes a main body, a baseboard, and a ground portion. The main body is made of conductive material. The baseboard is received in the main body and includes a feed point. One end of the feed point is electrically connected to the main body. Another end of the feed point feeds current to the main body. The ground portion is grounded and defines a space. The baseboard is spaced from the main body to form a first gap therebetween. The ground portion is positioned in the first gap to electrically connect the baseboard to the main body and an area of the first gap corresponding to the space forms a second gap.