Foldable Antenna Frame Layout for ESD Protection and Radiation
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Solution Overview
Problem
The performance of antennas in electronic devices with metal frames is deteriorated due to interference between conductive members and metal frames used as antenna radiators, leading to electrostatic discharge issues.
Innovation Solution
Incorporating split portions and protrusions in the conductive member adjacent to the display to create a discharge path and reduce electrostatic discharge, thereby minimizing interference and maintaining antenna radiation performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a continuous conductive member is provided adjacent to the display, then electrostatic discharge protection is improved, but antenna radiation performance deteriorates due to interference with the metal frame
Solution Approach 1:
The conductive member is divided into multiple separate conductive portions (first conductive portion, second conductive portion, third conductive portion) instead of being continuous. These segmented portions are positioned at different locations adjacent to the display, providing electrostatic discharge protection while reducing interference with the antenna radiator compared to a single continuous conductive member
Solution Approach 2:
Different regions of the housing have different conductivity properties. The fourth edge includes conductive portions for electrostatic discharge protection and non-conductive portions to minimize interference with the antenna. The conductive member is strategically placed only where needed for ESD protection while maintaining antenna performance in other regions
2Object-generated harmful factors
If a metal frame is used as the antenna radiator, then antenna radiation performance is improved, but electrostatic discharge protection deteriorates due to interference with the conductive member
Solution Approach 1:
The metal frame serving as the antenna radiator is segmented by introducing non-conductive portions in the fourth edge. This segmentation allows the conductive member to be divided into separate portions that can provide ESD protection without creating continuous interference patterns that would degrade antenna radiation performance
Solution Approach 2:
Non-conductive portions are introduced as intermediary elements between the conductive member and the antenna radiator regions. These non-conductive sections act as mediators that allow the conductive member to provide ESD protection while preventing harmful electromagnetic interference with the antenna radiation function
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
The solution effectively suppresses antenna radiation performance deterioration and protects the display from electrostatic discharge, improving overall device functionality.
Implementation Method 1
A conductive member may be provided at a position adjacent to the display in order to prevent/reduce performance degradation of the display due to electrostatic discharge
Implementation Method 2
a dielectric material at least partially disposed between the flexible display and the fourth edge of the second housing and at least partially surrounding a perimeter of the flexible display
Implementation Method 3
the wireless communication circuit may be configured to transmit and/or receive a radio signal using at least one of the first conductive portion, the second conductive portion, or the third conductive portion of the second housing
Data Source
AI summary
An electronic device according to an embodiment may include: a first housing including a first edge oriented in a first direction and a second edge oriented in a second direction perpendicular to the first direction; a second housing rotatably connected to the first housing, wherein the second housing includes a third edge corresponding to the first edge and a fourth edge corresponding to the second edge when the first housing and the second housing face each other; a flexible display defining a front surface of the electronic device and disposed over the first housing and the second housing; a dielectric material at least partially disposed between the flexible display and the fourth edge of the second housing and at least partially surrounding a perimeter of the flexible display; a conductive member comprising a conductive material located between the dielectric material and the flexible display; and a wireless communication circuit disposed within the first housing or the second housing, wherein the fourth edge may include a first conductive portion, a first non-conductive portion, a second conductive portion, a second non-conductive portion, and a third conductive portion, the conductive member may include a first split portion and a second split portion corresponding to the first non-conductive portion and the second non-conductive portion of the fourth edge of the second housing, respectively, and the wireless communication circuit may be configured to transmit and/or receive a radio signal using at least one of the first conductive portion, the second conductive portion, or the third conductive portion of the second housing.