Conductive Housing Antenna Layout Using Slit-Coupled Transmission Paths
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Solution Overview
Problem
The performance of antennas in electronic devices is reduced due to conductive materials in the housing, such as metallic components, which act as shields and interfere with signal transmission and reception.
Innovation Solution
The antenna pattern is positioned at a location corresponding to a slit between the rear and side surfaces of the housing, utilizing a conductive side member and a dielectric-filled slit to enhance antenna performance, with portions of the side member and antenna pattern supporting different frequency bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conductive materials are used in the housing to provide mechanical rigidity and design benefits, then structural strength and aesthetic appearance are improved, but antenna performance deteriorates due to shielding effects
Solution Approach 1:
The conductive housing is segmented into multiple portions, with slits created between them. This segmentation breaks the continuous conductive shield into discrete sections, allowing electromagnetic waves to pass through the gaps while each segment still provides structural support. The antenna pattern is positioned to utilize these slit regions as transmission paths.
Solution Approach 2:
A dielectric material is introduced as an intermediary substance filling the slits between conductive housing portions. This dielectric filler maintains the mechanical integrity and spacing between conductive segments while being electromagnetically transparent, allowing signal transmission through the housing structure without significant shielding.
2Strength
If conductive materials are used in the housing, then mechanical strength is improved, but signal transmission deteriorates due to interference from conductive members acting as shields
Solution Approach 1:
The housing structure is divided into multiple conductive segments with intentional slits between them. This segmentation converts the housing from a continuous shield into a series of discrete elements, reducing the overall shielding effect while maintaining individual segment strength for mechanical support.
Solution Approach 2:
Different regions of the housing have different electromagnetic properties. The slit regions between conductive portions are designed to be electromagnetically transparent for signal transmission, while the conductive portions themselves maintain mechanical strength. The antenna pattern is specifically positioned to align with these locally optimized transmission paths.
3Reliability
If the antenna pattern is positioned at the slit location between conductive housing portions, then antenna performance is improved by reducing shielding, but device complexity increases due to precise positioning requirements
Solution Approach 1:
The antenna pattern is merged with the housing structure by positioning it directly on or near the slit regions. This integration allows the antenna to utilize the naturally occurring electromagnetic transmission paths created by the segmented housing design, eliminating the need for separate antenna mounting structures or complex positioning mechanisms.
Solution Approach 2:
The segmented housing structure with slits automatically creates favorable positions for antenna placement. The housing design itself provides the transmission paths that the antenna needs, making the housing structure serve dual purposes of both mechanical support and antenna positioning guidance, thereby reducing overall device complexity.
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 antenna performance by reducing interference from conductive materials, enabling effective communication across multiple frequency bands, including legacy and new radio bands.
Implementation Method 1
a dielectric-filled slit to enhance antenna performance
Implementation Method 2
an antenna pattern at least partially disposed between the printed circuit board and the rear plate and disposed at a location corresponding to a slit between the rear plate and the side member
Data Source
AI summary
Disclosed is an electronic device including a display; a rear plate including a conductive material; a side member including a conductive material and disposed to surround a space between the display and the rear plate; a printed circuit board disposed between the display and the rear plate; an antenna pattern at least partially disposed between the printed circuit board and the rear plate and at a position corresponding to a slit between the rear plate and the side member; and a communication module which generates a communication signal transmitted to a power feeding unit. A portion of the antenna pattern may be electrically connected to the power feeding unit. Another portion of the antenna pattern may be electrically connected to a ground region of the printed circuit board. The power feeding unit may be connected to a portion of the side member. Various other embodiments are possible.