Communications Unit Fastening Structure With Extended Antenna Reference Plane
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Solution Overview
Problem
The geometry of electromagnetic transmitter and/or receiver units, such as antennas, restricts the physical size and can lead to reduced TRP and TIS values below required thresholds when mounted on vehicles like electric bicycles, due to industrial specifications.
Innovation Solution
A communications unit with a fastening device featuring a metallic first holding element that covers at least 50% of the carrier's underside, allowing capacitive coupling and extending the reference plane, and a second holding element for secure attachment, ensuring accurate positioning and angle reproducibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the antenna is fixed directly on the frame or drive unit, then it is protected from external effects and easily connected to control unit, but the reference plane size is restricted leading to reduced TRP and TIS values
Solution Approach 1:
The patent introduces a carrier as an intermediary component between the antenna and the drive unit/frame. This carrier provides an extended reference plane that capacitively couples with the antenna, thereby improving TRP and TIS values while maintaining the protective and connective functions when mounted on the drive unit or frame.
Solution Approach 2:
The patent extends the reference plane in spatial dimensions by using a carrier that protrudes from the mounting surface. This dimensional extension allows the antenna to achieve better electromagnetic performance without increasing the footprint area on the drive unit or frame, thus resolving the power limitation caused by restricted reference plane size.
2Power
If a metallic holding element covering at least 50% of the carrier underside is used, then the reference plane is extended improving transmission power, but the device complexity increases
Solution Approach 1:
The metallic holding element serves multiple functions simultaneously: it acts as a fastening component to secure the carrier, extends the reference plane for electromagnetic performance, and provides capacitive coupling with the antenna. This multi-functionality reduces the need for separate components, thereby limiting the increase in device complexity while achieving improved transmission and reception power.
3Ease of manufacture
If the antenna geometry is constrained by industrial specifications, then manufacturing is simplified, but the physical size is restricted reducing antenna performance
Solution Approach 1:
The patent separates the antenna from its mounting structure by introducing a carrier. This segmentation allows the antenna to maintain its standardized geometry for ease of manufacture while the carrier provides the extended reference plane needed for optimal electromagnetic performance. The antenna and carrier can be manufactured independently according to their respective requirements.
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
Enhances antenna performance by extending the reference plane, improving transmission and reception power, and providing reliable, flexible, and reproducible attachment to vehicle components.
Implementation Method 1
the metallic holding element allows for an extension of the reference plane for the transmitter and/or receiver device, to a frame and/or a drive unit of the vehicle by capacitively coupling the holding element with the transceiver and/or receiver device
Data Source
AI summary
A communication unit. The communication unit has an electromagnetic transmitter and/or receiver device and a fastening device for the electromagnetic transmitter and/or receiver device for fastening to a component, preferably to a drive unit and/or a frame, of a vehicle, preferably of a single-track vehicle such as an electric bicycle, including an in particular flat, essentially rectangular carrier, especially having two essentially oppositely situated sides on which the transmitter and/or receiver device is situated, at least a first holding element, the first holding element being designed to fasten the carrier to the component, the first holding element being made of metal, and the first holding element covering at least 50% of an in particular essentially rectangular side of the carrier that faces the component in a fastened state of the carrier.