Passive Repeater Antenna Coupling Through Conductive Housing
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Solution Overview
Problem
Existing solutions for overcoming radio barriers, such as active repeaters and complex installations, are not suitable due to high costs, power requirements, and installation challenges, especially when dealing with electrically conductive housing walls that cause significant attenuation and distortion of radio signals.
Innovation Solution
A passive repeater system using a first and second antenna connected by a passive galvanic coupling, allowing signal forwarding through a housing wall without external power, where one antenna can be inserted from the exterior into the interior, and both are designed to minimize attenuation and distortion, enabling easy installation and retrofitting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If active Bluetooth or WLAN repeaters are used to overcome radio barriers, then radio signal forwarding is achieved, but installation space, costs, and power supply requirements increase
Solution Approach 1:
The invention extracts the essential function of signal forwarding from complex active repeaters and implements it through a passive coupling mechanism. By removing the need for active electronic components and power supply, the solution reduces device complexity while maintaining the core functionality of overcoming radio barriers through galvanic coupling between antennas.
Solution Approach 2:
The patent introduces a passive coupling structure as an intermediary between the first and second antennas. This coupling mechanism mediates the signal transfer through the radio barrier without requiring active amplification or power consumption, thereby simplifying the overall system while achieving reliable signal forwarding.
2Reliability
If antenna is extended by cable extension to reach other side of radio barrier, then signal transmission is improved, but installation complexity and retrofitting difficulty increase
Solution Approach 1:
The invention segments the antenna system into two separate antennas positioned on opposite sides of the radio barrier, connected through a passive coupling structure. This segmentation allows each antenna to be installed independently in its respective location without requiring complex cable routing through the barrier, thereby simplifying installation and retrofitting while maintaining signal transmission quality.
3Adaptability or versatility
If standard radio modules with integrated antennas are used, then device compatibility is improved, but continuous wiring through radio barrier is required
Solution Approach 1:
The passive coupling structure serves as an intermediary that eliminates the need for continuous wiring through the radio barrier. By establishing galvanic coupling through the barrier rather than requiring physical cable penetration, the system maintains compatibility with standard radio modules while removing the complexity of continuous wiring installation.
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
The passive repeater system provides a cost-effective, low-attenuation, and low-distortion method for forwarding radio signals across electrically conductive housing walls, allowing for easy installation and retrofitting without the need for continuous wiring or external power, and is compatible with standard radio modules.
Implementation Method 1
a passive repeater has a first antenna and a second antenna that are preferably connected to each other by a passive and galvanic coupling
Implementation Method 2
one or both of the antennas have an elastic material and components of the one or both of the antennas can be pressed together elastically
Data Source
AI summary
The invention relates to a passive repeater for forwarding radio signals from a first device having a radio interface to a second device having a radio interface, wherein the passive repeater is configured to forward radio signals between an interior of a housing, which has a housing wall acting as a radio barrier, and an exterior, through the housing wall, wherein the passive repeater has a first antenna and a second antenna for this purpose, which are connected to each other by a passive and galvanic coupling, and wherein the first antenna can be arranged in the interior and the second antenna can be arranged in the exterior, and the passive coupling can be carried out through an opening in the housing wall, and wherein the first antenna can be inserted into the interior from the exterior through the opening and/or the second antenna can be withdrawn from the interior to the exterior through the opening. The invention further relates to a radio system having such a passive repeater, to a vehicle having such a repeater or such a radio system, to a bearing having such a repeater or such a radio system, and to a use of such a repeater or such a radio system.