Camera Module Metal Shielding as Antenna Ground
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Solution Overview
Problem
The positioning of two lenses and an antenna in communication devices affects radiation efficiency and space utilization, as the metal supports of the lenses impact antenna performance when adjacent, but separating them reduces valuable space for other components.
Innovation Solution
A communication device design featuring a camera mechanism with a metal shielding that covers a double lens camera module and an antenna mechanism electrically connected through the shielding, optimizing antenna placement and radiation efficiency while maintaining space for other components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the antenna and two lenses are positioned adjacent to each other, then space utilization is improved, but radiation efficiency of the antenna deteriorates due to metal supports of the lenses
Solution Approach 1:
A ground isolation structure is introduced as an intermediary component between the antenna and the metal supports of the lenses. This structure includes a ground isolation plate positioned beneath the antenna and ground isolation columns connecting the plate to the device housing, creating physical and electrical isolation that prevents the metal supports from interfering with the antenna's radiation efficiency while maintaining close proximity for space utilization
Solution Approach 2:
The ground isolation structure segments the grounding path by creating a dedicated isolation zone. The ground isolation plate divides the grounding function from the lens mounting function, allowing the antenna to have its own isolated ground reference that is not affected by the metal supports of the lenses, thus resolving the interference issue while maintaining compact layout
2Reliability
If the two lenses and antenna are positioned away from each other, then radiation efficiency of the antenna is improved, but valuable space for other components is reduced
Solution Approach 1:
The ground isolation structure serves as a mediator that enables close positioning of the antenna and lenses without direct metal-to-metal contact. By introducing the isolation plate and columns, the design achieves both goals: the antenna maintains its radiation efficiency through electrical isolation while the lenses can be positioned nearby for optimal space utilization
3Strength
If metal supports of the two lenses are used, then structural support is provided, but antenna performance deteriorates when positioned adjacent to the lenses
Solution Approach 1:
The ground isolation plate and columns act as intermediaries that separate the structural support function (performed by the metal lens supports) from the antenna's electromagnetic environment. The isolation structure provides a dedicated grounding path for the antenna that is electrically independent from the lens supports, allowing both to coexist without performance degradation
Solution Approach 2:
The ground isolation structure creates a localized isolated grounding zone specifically for the antenna. This local quality change ensures that only the antenna area has the isolated ground reference needed for optimal performance, while the rest of the device can use the metal lens supports for structural purposes without affecting the antenna
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 design enhances radiation efficiency and space utilization by shielding the camera module and connecting the antenna to the ground region through the metal shielding, improving communication device performance without compromising space for other essential components.
Implementation Method 1
a camera mechanism (30) with a metal shielding (310) covering a double lens camera module (320)
Implementation Method 2
an antenna mechanism (40) electrically connected through the shielding
Data Source
AI summary
The communication device includes a circuit board and a camera mechanism comprising a metal shielding and a camera module positioned on the circuit board. The metal shielding is arranged on the circuit board to cover the camera module and an antenna mechanism is arranged on the metal shielding and electrically connected to a ground region of the circuit board through the metal shielding. A wireless signal generated by the camera module is output by the antenna mechanism and radiates outward from the metal shielding.