FPCB Antenna Coupler Layout for Space and Signal Isolation
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Solution Overview
Problem
Electronic devices face challenges in mounting space constraints and signal interference due to the need to connect multiple antenna modules for different communication systems, particularly with the high power consumption of 5G systems, which affects the isolation performance and noise levels.
Innovation Solution
The use of a flexible printed circuit board (FPCB) with a coupler connecting multiple antenna modules to a single connector, reducing noise from power transmission lines and optimizing antenna module placement to save space and improve signal isolation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple connectors are mounted on the processor to connect antenna modules for different communication systems, then the isolation performance between antenna modules is improved, but the mounting space is increased
Solution Approach 1:
The patent combines multiple antenna modules (3G/4G antenna module and 5G antenna module) into a single connector structure. The connector includes multiple connection terminals that can simultaneously connect to multiple antenna modules, thereby reducing the number of connectors from multiple to one while maintaining isolation performance between different communication systems
Solution Approach 2:
The single connector is designed with multi-functionality to support both 3G/4G and 5G communication systems. It includes multiple connection terminals that can interface with different types of antenna modules, making one connector serve multiple purposes and connect multiple antenna modules simultaneously
2Use of energy by moving object
If power transmission lines are added to the connector for 5G communication, then the power consumption capability is improved, but the noise level is increased
Solution Approach 1:
The connector internally segments different transmission lines (power transmission lines and signal transmission lines) into separate pathways. This segmentation allows power transmission lines to be physically separated from signal lines, enabling the connector to handle high power for 5G communication while minimizing electromagnetic interference and noise to signal transmission
Data Source
AI summary
Disclosed is an electronic device. The electronic device includes: a housing including at least a part of a lateral surface of the electronic device; a printed circuit board (PCB) disposed in the housing; at least one wireless communication circuit disposed on the PCB; a first antenna module including at least one antenna disposed in a first region inside the housing; a second antenna module including at least one antenna disposed in a second region inside the housing; a third antenna module including at least one antenna disposed in a third region inside the housing; a first flexible printed circuit board (FPCB) connecting the first antenna module to the at least one wireless communication circuit; and a second FPCB connecting the second antenna module and the third antenna module to the at least one wireless communication circuit. The second FPCB includes: a first connector disposed on the PCB and electrically connected to the wireless communication circuit; a second connector coupled to a second joint electrically connected to the second antenna module; a third connector coupled to a third joint electrically connected to the third antenna module; and a coupler connecting the first connector, the second connector, and the third connector.