Multiband Aircraft Antenna for Secure Data Transmission
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Modern aircraft face security breaches due to low security levels in communication channels between onboard systems and ground systems, particularly during data transmission, which can compromise mission-critical data.
Innovation Solution
Implementing multiband wireless data transmission using different communication channels like WiFi, WiMAX, and SatCom with distinct wavelength ranges, utilizing a single broadband antenna on the aircraft's exterior to create physical separation between data domains, and employing aircraft communication modules connected via a multiplexer, with gate devices controlling connections based on availability and security status.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple separate antennas are used for different communication channels, then communication reliability is improved, but aircraft weight increases and structural integrity deteriorates
Solution Approach 1:
The patent combines multiple separate antennas into a single broadband antenna that operates across multiple frequency bands (WiFi, WiMAX, cellular, SatCom). This single antenna structure replaces what would traditionally require multiple separate antennas, thereby reducing aircraft weight while maintaining communication reliability through frequency division multiplexing and isolation techniques.
Solution Approach 2:
The broadband antenna is designed to perform multiple communication functions simultaneously across different frequency ranges. It serves as a universal antenna that can handle WiFi (2.4/5 GHz), WiMAX (3.5 GHz), cellular (800-2100 MHz), and SatCom frequencies, eliminating the need for dedicated antennas for each communication standard.
2Reliability
If multiple separate antennas are used for different communication channels, then communication security is improved through physical separation, but device complexity increases
Solution Approach 1:
The patent segments different communication domains into separate frequency bands and uses a multiplexer to route signals from different aircraft systems through isolation gates to the single broadband antenna. This logical and frequency-based segmentation maintains security separation between domains (e.g., flight control vs. entertainment systems) while using a unified physical antenna structure, thereby reducing complexity compared to multiple physical antennas.
Solution Approach 2:
The patent introduces a multiplexer with isolation gates as an intermediary device between aircraft systems and the broadband antenna. This intermediary manages signal routing and isolation dynamically, providing security separation between different communication domains without requiring separate physical antenna paths, thus simplifying the overall system architecture.
3Strength
If antennas are positioned inside the aircraft, then structural integrity is improved, but data transmission capability deteriorates
Solution Approach 1:
The patent combines the benefits of exterior positioning (superior transmission) with interior mounting (structural integrity) by using a single broadband antenna mounted on the aircraft exterior. This eliminates the transmission limitations of interior positioning while avoiding the need for multiple antenna penetrations that would compromise structural integrity. The unified antenna design requires fewer structural modifications compared to multiple separate antennas.
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 security by physically separating data domains, reduces drag and weight on the aircraft, and improves structural integrity while ensuring secure and efficient data transmission between aircraft and ground systems.
Implementation Method 1
a broadband antenna positioned on an exterior of the aircraft and connected to the multiplexer and configured to transmit the RF signals
Data Source
Figure 1
Figure 2A
Figure 2B
AI summary
Provided are methods and systems for multiband wireless data transmission between aircraft and ground systems. The transmission uses different wavelength ranges, each wavelength range corresponding to a different data domain and establishing a different communication channel. This wavelength differentiation provides physical separation between different data domains and, as a result, improves data security. Furthermore, a single broadband antenna is used on the exterior of the aircraft for transmitting data sets from different data domains. The single antenna configuration reduces drag and weight and improves structural integrity of the aircraft in comparison to multi-antenna configurations. Different aircraft communication modules, which are connected to different aircraft systems, handle different data domains and operate at different wavelength ranges. These modules are connected to the same antenna using a multiplexer. This connection may be controlled using gate devices and may be conditioned on verification of communication channel availability, security status, and other factors.