Antenna Ground Structure Around Camera Modules for Frequency Efficiency
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Solution Overview
Problem
In electronic devices, the performance of antennas is degraded due to interference between the antenna pattern and surrounding metal components, particularly when camera modules are adjacent to conductive portions used as antennas, leading to reduced frequency efficiency in specific frequency bands.
Innovation Solution
The electronic device incorporates a conductive pattern formed on a supporting member that couples with both the camera module and the camera bracket, extending the antenna's ground structure to reduce parasitic components and enhance frequency efficiency by increasing the electrical length of the antenna, thereby mitigating interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If camera modules are disposed adjacent to conductive portions used as antennas, then device integration is improved, but antenna performance deteriorates due to parasitic resonance interference
Solution Approach 1:
A conductive pattern is introduced as an intermediary element between the camera module and the antenna. This conductive pattern includes a first portion coupled with the camera module and a second portion coupled with the antenna, serving as a mediator to manage electromagnetic interference while allowing close proximity placement of components
Solution Approach 2:
The conductive pattern is divided into multiple portions: a first portion coupled with the camera module, a second portion coupled with the antenna, and potentially a third portion extending between them. This segmentation allows the conductive structure to perform multiple functions - providing a reference plane for the antenna while managing interference from the camera module
2Reliability
If conductive portions are extended to increase antenna electrical length, then frequency efficiency is improved, but device space requirements increase
Solution Approach 1:
The conductive pattern utilizes the Z-direction (thickness direction of the housing) to extend the electrical length of the antenna ground structure. By forming conductive portions on different surfaces and connecting them through conductive patterns, the solution increases electrical length without proportionally increasing the planar footprint
Data Source
AI summary
According to various embodiments of the disclosure, an electronic device may comprise a housing including a conductive portion, a wireless communication circuit electrically connected with the conductive portion, a first camera module disposed in a first area of the housing proximate to the conductive portion and including a first camera assembly and a flexible circuit board extending from the first camera assembly, a second camera module disposed in a second area of the housing, spaced apart from the first camera module, and including a second camera assembly and a camera bracket covering the second camera assembly and forming at least a partial surface of the housing, and a conductive pattern having at least a portion disposed between the first area and the second area and including a first portion coupled with the first camera module and a second portion coupled with the camera bracket. Other various embodiments are possible.