Mobile Radio Antenna Separation for Rail Vehicle Interference Control
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Solution Overview
Problem
Existing mobile radio devices for rail vehicles face challenges in ensuring safe and reliable transmission and reception operations due to interference between transmission and reception paths, which affects the seamless communication required for train protection and voice communication.
Innovation Solution
A mobile radio device with separated transmission and reception paths, utilizing a first and second transmitting antenna connected exclusively to their respective transceivers, a shared receiving antenna, and a signal processing unit with filters and amplifiers to minimize interference, with specific cable lengths and arrangements to optimize signal quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a shared receiving antenna is used for multiple transceivers, then the number of antennas is reduced, but interference between transmission and reception paths increases
Solution Approach 1:
The patent segments the antenna system by assigning dedicated transmitting antennas to each transceiver while sharing a common receiving antenna. This segmentation isolates transmission paths while maintaining a shared reception resource, reducing feedback interference through physical and functional separation of transmit and receive operations.
Solution Approach 2:
The patent introduces an intermediary receiving antenna system that mediates between multiple transmitting antennas and receiving modules. The shared receiving antenna acts as an intermediary element that receives signals from the environment while being isolated from direct transmission paths, preventing harmful feedback while enabling signal reception.
2Object-affected harmful factors
If transmitting antennas are arranged at a distance to reduce interference, then the device size increases, but maintaining compact size becomes difficult
Solution Approach 1:
The patent merges the receiving function into a shared antenna system that is spatially separated from transmitting antennas but electrically connected to multiple receiving modules. This merging allows multiple transceivers to share a common reception resource while maintaining physical distance from transmit antennas, reducing feedback interference without proportionally increasing device area.
Solution Approach 2:
The patent resolves the spatial conflict by transitioning to a different dimensional arrangement where transmitting antennas are positioned in one spatial configuration while the shared receiving antenna operates in a separate spatial zone. This dimensional separation allows compact integration while maintaining the necessary distance for interference reduction.
Data Source
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AI summary
The invention relates, inter alia, to a mobile radio device (10) for a vehicle, in particular a rail vehicle (800), having at least a first and a second transceiver (100, 200) each having a transmitting module (SM) and a receiving module (EM). The invention provides for the mobile radio device (10) to have one or more transmitting antennas (120, 220, 320) for transmission and to have one or more receiving antennas for reception, wherein the receiving antenna(s) connected to the receiving modules (EM) of the first and second transceivers (100, 200) are separated from the transmitting modules (SM) of the first and second transceivers (100, 200), and wherein the transmitting antenna(s) (120, 220) connected to the transmitting modules (SM) of the first and second transceivers (100, 200) are separated from the receiving modules (EM) of the first and second transceivers (100, 200).