Digital RF Signal Generator for Wireless Device Testing
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Solution Overview
Problem
Current methods for testing wireless devices require complex and costly equipment to generate radio frequency signals, especially for scenarios needing multiple signals from different spatial locations, which limits flexibility and efficiency.
Innovation Solution
A signal generator system comprising a baseband processing device and multiple radio frequency transmitters connected via a digital network, allowing for the generation of digital radio frequency signals without the need for analogue converters, enabling centralized data processing and flexible signal generation at different spatial positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional methods are used to generate multiple radio frequency signals from different spatial locations, then the signals can be provided to device under test, but the equipment becomes complex and costly
Solution Approach 1:
The system divides the signal generation function into separate spatial components by deploying multiple radio frequency transmitters at different locations. Each transmitter independently generates and transmits RF signals from its specific spatial position, eliminating the need for a single complex signal generation system. This segmentation allows versatile multi-location signal generation while keeping individual transmitter units relatively simple.
Solution Approach 2:
A digital network acts as an intermediary between the baseband processing device and the radio frequency transmitters. The digital network transmits digital baseband data to multiple transmitters, coordinating their operation without requiring direct complex interconnections between all components. This intermediary simplifies the overall system architecture by providing a standardized communication interface.
2Device complexity
If digital radio frequency signals are generated directly without analogue converters, then the hardware is simplified and cost reduced, but the signal generation capability must be achieved through digital means
Solution Approach 1:
The system replaces traditional analogue signal conversion hardware (digital-to-analogue converters, mixers, amplifiers) with digital signal processing. Radio frequency transmitters generate and process signals entirely in the digital domain, substituting electronic analogue components with digital logic and algorithms. This substitution simplifies hardware while maintaining RF signal generation capability through digital means.
Solution Approach 2:
The system changes the fundamental operating parameter domain from analogue to digital. By processing signals as digital data throughout the transmission chain and only converting to analogue at the final output stage (if needed), the system achieves RF signal generation with simplified hardware. This parameter change enables the use of digital components which are generally more reliable and easier to manufacture.
Data Source
AI summary
The present invention relates to generation of radio frequency signals by digital components. In particular, data for specifying a baseband signal are generated at a centralized processing device, and the data relating to the baseband signal are transmitted to radio frequency transmitters via a digital network. The radio-frequency transmitters digitally generate radio-frequency signals based on the data obtained via the digital network, and the generated radio frequency signals are provided to a connector or an antenna.