Multiband Train Antenna Merging GSM-R LTE 5G
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Solution Overview
Problem
The transition to new rail communication standards like FRMCS, which require support for LTE/4G and future 5G, alongside maintaining compatibility with GSM-R, poses challenges in upgrading train antennas, including increased costs, complex installations, and extended downtime due to the need for new infrastructure and multiple antenna installations.
Innovation Solution
A multiband antenna system that integrates GSM-R, 4G, and GNSS components into a single housing, matching the existing GSM-R antenna size and shape, allowing for seamless replacement without additional roof modifications, using a multiple coaxial cable to simplify cable management and reduce surveying needs, and featuring a design that minimizes electromagnetic interference and aerodynamic issues.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple separate antennas are installed for different communication standards (GSM-R, LTE/4G, 5G, GNSS), then communication functionality across multiple standards is achieved, but installation complexity and time increase significantly
Solution Approach 1:
The patent combines multiple antenna elements for different communication standards (GSM-R, LTE/4G, 5G, GNSS) into a single integrated antenna housing. This merging approach allows the train to support multiple communication standards while reducing the number of separate antenna installations required on the train roof, thereby decreasing installation complexity and time.
Solution Approach 2:
The integrated antenna housing serves multiple functions by incorporating different antenna elements that support various communication standards simultaneously. This multi-functional design allows a single antenna system to replace what would traditionally require multiple separate antenna installations, achieving versatility across GSM-R, LTE/4G, 5G, and GNSS standards.
2Adaptability or versatility
If multiple separate antennas are installed for different communication standards, then communication functionality is achieved, but installation time and train downtime increase
Solution Approach 1:
By merging multiple antenna functions into a single integrated housing, the installation process is streamlined into one operation rather than requiring multiple separate installations. This reduces the time the train must be taken out of service for antenna upgrades, minimizing train downtime while maintaining compatibility across multiple communication standards.
3Adaptability or versatility
If multiple cables are routed through the train for different antennas, then connectivity for multiple communication standards is achieved, but installation cost and effort increase due to surveying requirements
Solution Approach 1:
The patent consolidates multiple cable connections into a single integrated antenna housing, which simplifies cable routing and reduces the need for extensive surveying and installation planning. This merging of cable connections into one location makes the installation process more straightforward and reduces associated costs and efforts.
4Adaptability or versatility
If additional hardware is added to the train roof for new communication standards, then communication functionality is improved, but maintenance issues and aerodynamic problems increase
Solution Approach 1:
By combining multiple antenna elements into a single integrated housing, the patent reduces the total number of separate components on the train roof. This consolidation minimizes aerodynamic interference by reducing the number of protruding elements and potential sources of drag, while also reducing maintenance issues by having fewer separate hardware components to inspect and maintain.
Data Source
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AI summary
A multiband antenna for a train is provided, comprising a base plate and a housing. The housing comprises a base portion and a cover, removably mounted on the base plate, the cover having a footprint having a first arm and a second arm joined at a central apex. An application-specific antenna mounted on the base plate at the apex of the cover; and a cellular network antenna mounted on the base plate in each of the first and second arms of the cover. The cover comprises a continuous supporting wall and an upper portion, the continuous supporting wall extending between the base portion and the upper portion and having a maximum height h, and the upper portion extending from the apex along the first and the second arms at the maximum height h of the supporting wall and inclines to form a valley extending between the first and the second arms from proximate the apex to the base portion distal from the apex.