Antenna in Display Frame Reducing SAR and Overheating
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In electronic devices, positioning antennas within enclosures leads to space constraints, increased specific absorption rate (SAR), potential overheating, and interference with other components, along with additional production costs and complexity due to the need for antenna windows and metal-finish paints.
Innovation Solution
The antenna is positioned inside a frame for the display panel, featuring a ground plate, substrate, and dual loop antenna elements that are grounded, allowing for a compact design that reduces SAR and eliminates the need for antenna windows, using a dual-band or single-band configuration for wireless communication and navigation signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the antenna is positioned inside the enclosure, then the wireless communication function is achieved, but space constraints and interference with other components occur
Solution Approach 1:
The antenna is extracted from the traditional enclosure mounting location and repositioned to the frame of the display panel. This separation removes the antenna from the constrained enclosure space, eliminating space conflicts and interference with other electronic components while maintaining wireless communication functionality
Solution Approach 2:
The antenna mounting location is shifted from the two-dimensional enclosure interior to the one-dimensional frame structure of the display panel. This dimensional change provides additional space and separates the antenna from other components in the enclosure, resolving space constraints and interference issues
2Reliability
If the antenna is positioned inside the enclosure, then wireless communication is enabled, but SAR increases and overheating occurs
Solution Approach 1:
The antenna is extracted from the enclosure and mounted on the frame of the display panel. This physical separation increases the distance between the antenna and the user's body when the device is held, thereby reducing specific absorption rate (SAR) and minimizing overheating of the enclosure and internal components
Solution Approach 2:
The frame of the display panel serves as an intermediary structure between the antenna and the enclosure. This intermediate mounting location provides thermal and electromagnetic separation, reducing the direct impact of antenna radiation on the enclosure and internal components
3Reliability
If antenna windows and metal-finish paints are used, then the antenna can be mounted in the enclosure, but production costs and complexity increase
Solution Approach 1:
The antenna mounting requirement is extracted from the enclosure structure, eliminating the need for antenna windows and metal-finish paints on the enclosure. The antenna is instead mounted on the frame of the display panel using simpler methods such as adhesives or mechanical fasteners, significantly reducing production complexity and cost
Solution Approach 2:
Instead of modifying the enclosure to accommodate the antenna (cutting windows, applying paints), the solution inverts the approach by mounting the antenna on the frame structure. This reversal eliminates the need for complex enclosure modifications and associated manufacturing steps
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The present subject matter describes positioning of an antenna inside a frame for a display panel of an electronic device. The antenna comprises a ground plate extending along a side of the frame, a substrate positioned on the ground plate, and two loop antenna elements formed on the substrate, both ends of each of the two loop antenna elements being connected to the ground plate.