Coaxial Antenna Interconnect Layout for Lower Transmission Loss
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Solution Overview
Problem
Existing electronic devices face significant transmission loss between communication modules and antenna modules, particularly when these components are separated by a long distance, leading to inefficiencies in signal transmission.
Innovation Solution
The electronic device incorporates a first circuit board, a second circuit board with a communication module, a first antenna module disposed separately, a flexible cable with extensions and receptacles, and coaxial cables to connect the communication module and antenna module, optimizing signal transfer and reducing insertion loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the communication module and antenna module are disposed far apart from each other, then the device can achieve better signal isolation and reduced interference, but transmission loss increases significantly
Solution Approach 1:
The patent introduces a dedicated transmission line (coaxial cable) as an intermediary component between the communication module and antenna module. This specialized transmission line with controlled impedance and shielding properties acts as a mediator that maintains signal integrity over long distances, enabling both physical separation for interference reduction and acceptable transmission efficiency
Solution Approach 2:
The patent optimizes transmission line parameters including impedance matching (50 ohms), cable geometry, and material properties to minimize signal loss. By carefully controlling these parameters, the system achieves low transmission loss despite the extended distance between modules, resolving the contradiction between separation benefits and transmission efficiency
2Reliability
If a long cable is used to connect the communication module and antenna module, then the modules can be positioned optimally for signal performance, but the cable itself becomes a source of transmission loss
Solution Approach 1:
The patent specifies precise cable parameters including 50-ohm impedance, controlled geometry, and selected materials to minimize attenuation. By optimizing these physical parameters, the cable maintains low insertion loss even over extended lengths, enabling reliable signal transmission while preserving positioning flexibility
Solution Approach 2:
The patent employs a dedicated, purpose-built transmission line rather than repurposing existing connectors or cables. This specialized cable, while adding a component, provides optimized performance at acceptable cost, treating the transmission line as a dedicated functional element rather than a compromise solution
Data Source
AI summary
An electronic device according to certain embodiments includes a first circuit board, a second circuit board including a communication module, a first antenna module disposed to be separate from the communication module, a flexible cable including a first connector connected to the first circuit board, a second connector connected to the first antenna module, a first extension extending between the first connector and the second connector, and a first receptacle disposed in the first extension, and a first coaxial cable including a third connector connected to the communication module, a fourth connector connected to the first receptacle, and a second extension extending between the third connector and the fourth connector.