RF Communication System Signal Conversion and Shielding
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Solution Overview
Problem
Current wireless radio frequency communication systems face poor reception and transmission performance due to external interferences, which can cause signal loss and interference with other channels or frequency bands.
Innovation Solution
A wireless radio frequency communication system comprising an antenna, a port converting device, an information transmission device, and a shield case, where the port converting device converts single-ended signals to differential mode signals, and the shield case and port converting device share a common ground to reduce external interference, while the information transmission device processes and transmits the differential mode signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If single-ended signals are used in wireless radio frequency communication, then the system structure is simple, but external interferences cause poor reception and transmission performance
Solution Approach 1:
The patent transforms the signal mode from single-ended to differential mode, changing the fundamental parameter of signal representation. This parameter change enables the system to reject common-mode external interferences while maintaining good reception and transmission performance, directly resolving the technical contradiction between reliability and susceptibility to external harmful factors
2Object-affected harmful factors
If differential mode signals are used to reduce external interference, then anti-interference capability is improved, but device complexity increases due to port converting devices and shield cases
Solution Approach 1:
The patent introduces a port converting device as an intermediary component that transforms single-ended signals to differential mode signals. This intermediary enables the system to achieve anti-interference capabilities without requiring a complete redesign of the entire communication system, thus resolving the contradiction between reducing external interferences and maintaining acceptable device complexity
Solution Approach 2:
The shield case is connected to the reference voltage end to create an equipotential environment, which reduces the impact of external interferences on the information transmission device. This equipotential design provides shielding protection while maintaining a relatively simple overall structure, addressing the contradiction between anti-interference capability and device complexity
3Object-affected harmful factors
If shield case is used to protect information transmission device, then external interference is reduced, but heat dissipation becomes more difficult
Solution Approach 1:
The patent employs a shield case with optimized structure that provides electromagnetic shielding while incorporating heat dissipation features. The shield case acts as a flexible protective shell that can be designed with appropriate thickness and material properties to simultaneously achieve interference reduction and heat dissipation, resolving the contradiction between protection and thermal management
4Object-affected harmful factors
If common ground connection is implemented between shield case and port converting device, then external interference is reduced, but manufacturing precision requirements increase
Solution Approach 1:
The patent implements a common ground connection between the shield case and port converting device to create an equipotential reference. This design provides a stable reference voltage that reduces the impact of external interferences. The manufacturing precision requirements are managed through standardized connection interfaces and reference voltage stabilization techniques, resolving the contradiction between interference reduction and manufacturing precision requirements
Data Source
AI summary
A system comprises an antenna, a port converting device, an information transmission device, a shield case, and a reference voltage end; wherein the antenna, the port converting device, and the information transmission device are connected sequentially, and the information transmission device is disposed within the shield case, and both the shield case and the port converting device is connected with the reference voltage end; the antenna is configured for a conversion between a radio frequency signal and a single-ended signal; the port converting device is configured for a conversion between the single-ended signal and target differential mode signals; the information transmission device is configured to transmit and process the target differential mode signals; and parameters of components in the port converting device is determined according to a preset communication frequency and a voltage amplitude and phase of a differential mode signal.