Modular RF Antenna Assemblies for Aircraft Wireless Networks
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Solution Overview
Problem
The implementation of wireless networks onboard aircraft is hindered by the inefficiencies in upgrading, repairing, and modifying existing WLAN installations, which are often dictated by accessibility to power and data networks, limiting flexibility and maintenance efficiency.
Innovation Solution
The introduction of modular RF assemblies with removably mounted control and RF antenna components, allowing for simplified maintenance and upgrades, including a mounting plate, control assembly with a processor and RF transceiver, and an RF antenna assembly, which can be easily replaced or modified to support different wireless frequencies and protocols.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If standalone LRUs are mounted in close proximity to RF antennas with coaxial cables, then wireless coverage can be provided across the aircraft, but the location and placement of LRUs are dictated by accessibility to power and data networks rather than optimal wireless coverage, and maintenance efficiency is reduced
Solution Approach 1:
The system is divided into modular RF assemblies where each assembly integrates an LRU with its associated RF antenna(s) into a single replaceable unit. This segmentation allows the RF assemblies to be independently installed, moved, and maintained without being constrained by fixed power and data network accessibility points, thereby improving both wireless coverage optimization and maintenance efficiency.
2Reliability
If multiple LRUs are installed to provide adequate wireless coverage, then coverage across the aircraft is achieved, but each LRU requires separate power and data connections, increasing system complexity and installation effort
Solution Approach 1:
Multiple RF antennas and their associated LRUs are merged into integrated RF assemblies that function as unified units. Each assembly contains the LRU, RF antennas, and necessary interconnections, reducing the overall system complexity by eliminating the need for separate power and data connection management for each individual LRU while maintaining adequate wireless coverage through the distributed arrangement of multiple assemblies.
3Adaptability or versatility
If LRUs are installed to support current wireless frequencies and protocols, then existing network requirements are met, but upgrading to support new wireless frequencies and protocols requires installing new LRUs, increasing upgrade effort and complexity
Solution Approach 1:
The RF assemblies are designed with dynamic adaptability, allowing the LRU components within each assembly to be upgraded or replaced to support new wireless frequencies and protocols. This dynamic design enables future-proofing where assemblies can be easily modified or swapped out as technology evolves, significantly reducing upgrade effort compared to fixed, non-modular installations.
4Ease of manufacture
If LRUs are positioned based on accessibility to power and data networks, then installation is simplified, but the locations may not be optimal for wireless coverage and maintenance access
Solution Approach 1:
The RF assemblies are designed as universal units that can be installed at multiple locations throughout the aircraft, each location providing both power/data accessibility and optimal wireless coverage characteristics. The modular design allows these multi-functional assemblies to serve dual purposes: maintaining simple installation through standardized connection points while simultaneously achieving optimal wireless coverage through strategic placement of multiple assemblies in locations that balance both installation ease and coverage quality.
Data Source
AI summary
Modular RF assemblies are described for radio networks. The modular RF assemblies include a number of replaceable elements for simplified maintenance and upgradability. In particular, the modular RF assemblies include a control assembly which includes electronics, an RF antenna assembly that includes one or more RF antennas, and a mounting plate. The RF antenna assembly is removably mounted to the control assembly, and the control assembly is removably mounted to the mounting plate. During a maintenance operation and/or an upgrade operation, the control assembly and/or the RF antenna assembly may be replaced to resolve a defective component, to modify the orientation or type of the one or more RF antennas, to change the type of wireless spectrum used for the radio network, etc.