Side-Frame Antenna Layout to Limit Display Interference
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Solution Overview
Problem
Existing electronic devices face challenges in efficiently radiating wireless communication signals due to interference from display components, which affect the performance and frequency bandwidth of antennas.
Innovation Solution
The electronic device incorporates a conductive member with a protrusion projecting into the internal space, coupled with a nonconductive member and a printed circuit board, where a wireless communication circuit feeds signals through a conductive sheet to the conductive member, minimizing interference from display components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the antenna is disposed close to the display component, then the device structure is compact, but the radiation efficiency and frequency bandwidth are reduced due to interference from display components
Solution Approach 1:
A nonconductive member is introduced as an intermediary between the conductive member (antenna) and the display component. This nonconductive member includes a recess that receives the protrusion of the conductive member, creating physical separation and reducing electromagnetic interference from the display while maintaining a compact overall device structure.
Solution Approach 2:
The conductive member is designed with a protrusion that extends in the thickness direction (z-axis) of the device, creating a three-dimensional structure. This vertical dimensionality allows the antenna to be positioned closer to the display in the planar direction while maintaining adequate separation in the thickness direction, thus resolving the contradiction between compactness and radiation efficiency.
2Ease of manufacture
If the antenna structure is simplified to reduce manufacturing complexity, then the manufacturing cost is reduced, but the frequency bandwidth and radiation performance are limited
Solution Approach 1:
The conductive member serves multiple functions: it forms the lateral face of the device housing, acts as the antenna radiator, and provides structural support. The nonconductive member also serves dual purposes by supporting the conductive member and providing electromagnetic isolation. This multi-functionality reduces the need for separate antenna components, simplifying manufacturing while maintaining adequate frequency bandwidth through the optimized conductive member geometry.
Solution Approach 2:
The conductive member's geometry is optimized by forming a protrusion with specific dimensions and shape that extend into the internal space. By adjusting the protrusion's size, shape, and position, the antenna's resonant frequency and bandwidth characteristics are tuned without requiring additional complex components, thus achieving versatile frequency performance with simplified manufacturing.
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 enhances radiation efficiency and frequency bandwidth of wireless communication signals by reducing interference from display elements, resulting in improved antenna performance.
Implementation Method 1
a conductive member which forms at least a part of a lateral face of the electronic device and radiates a signal of a designated frequency band
Implementation Method 2
a nonconductive member disposed between a rear face of the electronic device and the display and coupled to the conductive member
Data Source
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AI summary
An electronic device according to an embodiment may include a conductive member which forms at least a part of a lateral face of the electronic device and radiates a signal of a designated frequency band. The conductive member may include a protrusion which projects toward an internal space of the electronic device. The electronic device may include a display disposed on at least a part of a front face of the electronic device, a nonconductive member disposed between a rear face of the electronic device and the display and coupled to the conductive member, and a printed circuit board disposed in the internal space of the electronic device. The nonconductive member may include a first recess onto which the protrusion of the conductive member is seated. The wireless communication circuit may feed the conductive member through at least part of a third face formed by a first face of the protrusion of the conductive member and a second face extending from the first recess of the nonconductive member.