Multifunction Radio System Using Digital Downconversion
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Modern aircraft require multiple radio systems for communication, each with its own transmitter, receiver, and antenna, leading to increased weight and space requirements due to the need for separate systems operating at specific frequencies.
Innovation Solution
A multifunction radio system that can receive and transmit signals from multiple radio systems using a single antenna and digital downconversion, processing signals with a digital signal processor to emulate multiple radios, thereby reducing the need for separate systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple separate radio systems are deployed for different communication functions, then communication reliability and functionality are improved, but aircraft weight and space requirements increase
Solution Approach 1:
The patent implements a single radio system capable of operating across multiple frequency bands (VHF, UHF, L-band) and supporting multiple communication functions (voice, data, ADS-B, transponder) through software-defined radio technology. This multi-functional approach replaces traditional separate dedicated radios, reducing aircraft weight while maintaining comprehensive communication coverage and reliability across all required aviation frequency ranges.
2Adaptability or versatility
If multiple separate radio systems are deployed for different communication functions, then communication versatility is improved, but device complexity increases
Solution Approach 1:
The system provides versatile communication capabilities across multiple frequency bands and modes through a single unified platform, reducing the number of separate devices needed while managing complexity through integrated hardware and software architecture.
Solution Approach 2:
The patent employs software-defined radio technology where virtual radio instances are created through software rather than physical hardware copies. This allows multiple communication functions to be emulated within a single physical system, reducing hardware complexity while maintaining full functional versatility across all required aviation communication standards.
3Adaptability or versatility
If multiple separate radio systems are deployed for different communication functions, then functional coverage is improved, but space requirements increase
Solution Approach 1:
The unified radio system consolidates multiple communication functions (VHF voice, UHF data, L-band ADS-B, transponder) into a single integrated unit, dramatically reducing the space required in the aircraft's avionics bay compared to housing separate dedicated radios for each frequency band and function.
Solution Approach 2:
The patent merges multiple previously separate radio systems into a single integrated platform that shares common hardware resources (antenna, amplifier, processor) across all frequency bands and communication modes, thereby minimizing the total volume occupied by the communication system while maintaining full functional coverage.
Data Source
AI summary
A multifunction radio for receiving radio signals from and sending transmissions to multiple radio systems comprises an antenna and a transmit/receive switch coupled to the antenna. The radio further comprises a receiver section coupled to the transmit/receive switch and configured to receive radio signals from one or more multiple radio systems. The receiver section includes a digital downconverter configured to digitally downconvert radio signals sent from one or more of the multiple radio systems and a digital signal processor coupled to the digital downconverter for processing the downconverted signals. A transmitter section is coupled to the transmit/receive switch and configured to generate a transmission signal for reception by one or more of the multiple radio systems.