Camera Module Grounding Layout for Antenna Interference Suppression
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Solution Overview
Problem
Existing electronic devices experience reduced shooting performance and user experience due to interference from the antenna causing phenomena such as blurred screens and stuttering during photography.
Innovation Solution
A camera module with a ground member electrically connected to the camera circuit board and the device's circuit board, altering the resonance frequency to avoid coupling with the antenna's sensitive bands, using conductive materials and matching members to enhance interference suppression.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an antenna is arranged inside the electronic device to enable communication functions, then communication capability is improved, but the antenna transmits signals that cause blurred screen and stuttering during shooting, reducing shooting performance
Solution Approach 1:
A ground member is introduced as an intermediary component between the camera circuit board and the device's ground terminal. This ground member acts as a mediator to manage electromagnetic interference from the antenna, providing a dedicated grounding path that isolates the camera module from antenna-induced interference while maintaining communication functionality.
Solution Approach 2:
The grounding parameters of the camera module are changed by adding a dedicated ground member with specific electrical connection characteristics. This modifies the electromagnetic environment of the camera module, shifting its resonance frequency away from the antenna's operating bands to prevent coupling and interference during shooting.
2Reliability
If a ground member is added to the camera module to improve interference suppression, then shooting effect is improved, but the device structure becomes more complex
Solution Approach 1:
The ground member serves multiple functions simultaneously: it provides electromagnetic shielding, establishes a dedicated grounding path, and acts as an interference suppression element. By consolidating these functions into a single component, the design avoids adding multiple separate elements that would increase complexity further.
Solution Approach 2:
The ground member is strategically positioned and configured with specific local characteristics (conductive material, connection points at edges) to address interference issues precisely where they occur in the camera module, rather than requiring comprehensive structural changes throughout the entire device.
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
Improves shooting performance by preventing strong coupling between the camera module and the antenna, reducing interference and enhancing user experience.
Implementation Method 1
A ground member is arranged on the camera circuit board and is electrically connected to the camera circuit board and a ground terminal of a circuit board of the electronic device. A ground point between the camera circuit board and the circuit board of the electronic device is added, which helps improve an interference suppression effect of the camera module. The ground member extends out of the camera circuit board from each of the first edges, and is electrically connected to the ground terminal of the circuit board of the electronic device. The ground point between the camera circuit board and the circuit board of the electronic device is added along the first direction, to change a resonance frequency of the camera module along the first direction, so that the resonance frequency of the camera module deviates from a sensitive band of the antenna of the electronic device
Implementation Method 2
preventing the antenna of the electronic device from being strongly coupled to the camera module when the antenna transmits a signal, thereby preventing the antenna of the electronic device from being strongly coupled to the camera module when the antenna transmits a signal, so as to avoid interference with the camera module
Data Source
AI summary
This application relates to the technical field of electronic devices, and provides a camera module and an electronic device, to resolve problems that a camera module is easily disturbed, shooting performance of the electronic device is reduced, and a shooting effect is affected. The foregoing camera module is applied to the electronic device, which includes a lens, a camera circuit board, and a ground member. The camera circuit board is fixed to the lens. The ground member is arranged on the camera circuit board and electrically connected to the camera circuit board. The ground member is electrically connected to a ground terminal of a circuit board of the electronic device.