Antenna Module Layout With Overlapping Flex PCB EMI Shielding
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Solution Overview
Problem
Existing electronic devices with deformable displays and rotatable housings face challenges in efficiently integrating antenna modules for wireless communication, particularly in high-frequency bands and short-range wireless communication, due to structural constraints and interference issues.
Innovation Solution
The electronic device incorporates a flexible printed circuit board that overlaps with antenna modules, using a conductive sheet to electrically connect printed circuit boards and antenna modules, ensuring stable communication across different device configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a flexible printed circuit board is used to electrically connect the printed circuit board and antenna modules, then ease of operation and adaptability are improved, but device complexity increases
Solution Approach 1:
The flexible printed circuit board is designed to be bendable and deformable, allowing it to adapt to different spatial configurations between the printed circuit board and antenna modules. This dynamic flexibility enables the circuit board to maintain electrical connectivity while accommodating the rotatable housing and deformable display structures, resolving the contradiction between adaptability and device complexity.
2Adaptability or versatility
If antenna modules are integrated into the housing with rotatable components, then adaptability is improved, but harmful factors such as signal interference increase
Solution Approach 1:
A shielding structure is introduced as an intermediary element between the antenna modules and other electronic components. This shielding structure blocks electromagnetic interference and signal noise, allowing the antenna modules to maintain stable wireless communication performance while the housing rotates and the display deforms, thus resolving the contradiction between adaptability and signal interference.
3Adaptability or versatility
If multiple antenna modules are disposed in the housing for different communication functions, then versatility is improved, but device complexity increases
Solution Approach 1:
Multiple antenna modules supporting different communication functions (5G, Wi-Fi, Bluetooth, etc.) are merged into a single integrated antenna assembly. This combined structure reduces the number of separate components and simplifies the overall device architecture while maintaining the versatility to support multiple wireless communication standards simultaneously.
4Productivity
If the flexible printed circuit board overlaps with antenna modules to save space, then productivity is improved, but harmful factors such as electromagnetic interference increase
Solution Approach 1:
A shielding structure is positioned between the flexible printed circuit board and the antenna modules in the overlapping region. This intermediary shielding layer prevents electromagnetic interference while allowing the flexible circuit board to maintain its space-efficient overlapping configuration with the antenna modules, thus resolving the contradiction between productivity and electromagnetic interference.
Data Source
AI summary
An electronic device is provided. The electronic device includes a housing including a support, a printed circuit board disposed in the housing, at least one processor disposed on the printed circuit board, a first antenna module spaced apart from the printed circuit board in the housing, a flexible printed circuit board disposed in the housing, and coupled to the printed circuit board and the first antenna module, to electrically connect the printed circuit board and the first antenna module, a second antenna module disposed in the housing, and including a base substrate and a conductive pattern disposed on the base substrate, and a conductive sheet, wherein the flexible printed circuit board is at least partially overlapped with the second antenna module in a direction of a rear surface of the housing, between the printed circuit board and the first antenna module, and wherein at least a portion of the conductive sheet is disposed between the second antenna module and the flexible printed circuit board at a portion where the second antenna module and the flexible printed circuit board overlap.