Offset Antenna Cap for USB RF Device Interference
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Solution Overview
Problem
Conventional USB devices with RF radiofrequency functionality have limited communication range and efficiency due to their small size, which restricts the antenna's coupling surface and interferes with conductive parts of the circuit, limiting their effectiveness in radiofrequency communication.
Innovation Solution
The RF device antenna is positioned offset from the electronic circuit to minimize interference and is designed to be flexible, removable, and connected via a circuit that extends from the electronic circuit to accessible connection points, allowing for a larger coupling surface and reduced overall dimensions, enabling efficient radiofrequency communication without hampering USB connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the antenna is integrated into the USB device body, then the device structure is compact, but the antenna coupling surface is limited and interference with conductive parts occurs
Solution Approach 1:
The antenna is separated from the main USB device body and implemented as a removable cap assembly. This segmentation allows the antenna to have an independent coupling surface that extends beyond the limited device body area, while the conductive parts remain confined to the USB device body, thereby eliminating interference between the antenna and conductive parts while improving radiofrequency communication efficiency
Solution Approach 2:
The antenna coupling surface is extended into the third dimension by forming a cap structure that covers the USB device body. The cap's antenna portion extends outward from the device body surface, creating an enlarged effective coupling area in the radial direction rather than being constrained to the two-dimensional footprint of the USB device body
2Reliability
If the antenna coupling surface is enlarged to improve communication range, then radiofrequency efficiency improves, but the device overall dimensions increase
Solution Approach 1:
The antenna system is divided into two parts: a compact USB device body containing the electronic circuit and a separate removable cap containing the antenna. This allows the antenna coupling surface to be enlarged in the cap portion without increasing the dimensions of the USB device body, thereby improving communication range while maintaining compact overall device dimensions when the cap is removed
3Device complexity
If the antenna is positioned close to the electronic circuit, then the device structure is simplified, but interference with conductive parts reduces communication quality
Solution Approach 1:
The antenna is extracted from the vicinity of the electronic circuit and placed in a removable cap assembly. The connection between the antenna and electronic circuit is achieved through contact points on the cap that engage with corresponding contacts on the USB device body when the cap is attached. This extraction eliminates interference between the antenna and conductive parts of the electronic circuit while maintaining a relatively simple connection structure through the cap assembly
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 configuration enhances the communication range and quality of the radiofrequency device while maintaining compact dimensions, allowing for flexible antenna positioning and customization of the range, ensuring efficient electromagnetic coupling and mechanical protection.
Implementation Method 1
a radiofrequency antenna at least partially connected to the electronic circuit and defining an electromagnetic coupling surface
Data Source
AI summary
The invention relates to a radiofrequency communication device that comprises a gripping beating body having a surface; an electronic and/or electric circuit extending in the gripping beating body; at least one antenna provided in the vicinity of the electronic circuit. The device includes a connection circuit for connection to the antenna, that is provided at least partially in the gripping beating body and extends from the electronic circuit up to connection points of the antenna, said antenna connection points being accessible from the outside of the beating body.