Dual-Layer EO RF Phased Array Antenna for Aircraft
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Solution Overview
Problem
Aircraft communication systems face reliability issues due to optical noise during take-off and landing, necessitating a solution that provides additional communication channels without increasing aircraft weight by requiring additional equipment.
Innovation Solution
A dual-layer communication system incorporating electro-optical (EO) and radio-frequency (RF) antennas, operated by a processor that switches between EO and RF signals based on signal quality, allowing for reliable communication using either wavelength without adding significant weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If additional communication equipment is added to provide RF communication channel, then communication reliability is improved, but aircraft weight increases
Solution Approach 1:
The patent combines optical and RF communication systems into a single integrated antenna assembly. The optical antenna array and RF antenna array are integrated on the same substrate structure, sharing common support elements, feeding networks, and control systems. This merging approach provides both communication modes without the weight penalty of completely separate systems, as the structural and control infrastructure is shared between the two communication types.
Solution Approach 2:
The antenna assembly is designed as a multi-functional platform that can operate in both optical and RF communication modes. The same physical structure supports both types of antennas, and the system can dynamically switch between communication modes or operate simultaneously in both modes. This universality eliminates the need for separate dedicated equipment for each communication type, reducing overall system weight while maintaining communication reliability across different operational conditions.
2Productivity
If optical communication is used, then communication bandwidth is improved, but communication reliability deteriorates during take-off and landing due to optical noise
Solution Approach 1:
The communication system is designed to dynamically switch between optical and RF communication modes based on real-time environmental conditions. During take-off and landing when optical noise is present, the system automatically transitions to RF communication. In normal flight conditions, it uses optical communication for high bandwidth. This dynamic adaptability allows the system to optimize both bandwidth and reliability according to operational phase, avoiding the trade-off by making the communication mode flexible rather than fixed.
Data Source
AI summary
A communication system includes an antenna assembly. The antenna assembly includes an optical communication layer including a plurality of electro-optical (EO) antennas for communicating via an EO signal and a radio-frequency communication layer including a plurality of radio frequency (RF) antennas for communicating via an RF signal. A processor operates the antenna assembly to communicate via one or both of the EO signal and the RF signal.