RF Signal Decomposition for Low-Power Reconfigurable Transceivers
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Solution Overview
Problem
Existing radio frequency signal transceiver devices face challenges in power consumption and reconfigurability, particularly when handling high-frequency signals and adapting to new communication standards, due to the need for high-bandwidth converters and powerful digital processors.
Innovation Solution
A method and device that decompose the radio frequency signal into a weighted sum of periodic basic signals of different frequencies, with the highest carrier frequency being lower than the basic signals, allowing for efficient analog generation and summation using a digital processor, enabling easy reconfiguration and reduced power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high-bandwidth converters and powerful digital processors are used to handle high-frequency signals, then signal processing capability is improved, but power consumption increases to 500-1000 watts
Solution Approach 1:
The patent segments the radio frequency signal into multiple frequency components using Fourier transform, processes each component separately at lower frequencies, then reconstructs the signal. This allows using lower-bandwidth converters and less powerful processors while maintaining overall signal processing capability.
Solution Approach 2:
The patent changes the frequency parameter of the signal by transforming it from high-frequency domain to lower-frequency domain for processing, then transforms it back. This parameter transformation enables the use of low-power converters and processors that operate at lower frequencies while still handling the original high-frequency signal content.
2Adaptability or versatility
If purely software-based processing is used to handle real-time high-frequency signals, then reconfigurability for new standards is improved, but converter bandwidth and processing power requirements increase
Solution Approach 1:
The patent applies Fourier transform to segment the high-frequency signal into multiple frequency components, which can be processed independently. This segmentation allows the use of lower-bandwidth converters while maintaining the ability to handle the full frequency range through software-based reconfiguration of processing parameters.
Solution Approach 2:
The patent creates a universal processing architecture that can handle multiple communication standards and frequency ranges by software reconfiguration. The same hardware infrastructure can be adapted to different standards (2G, 3G, 4G, WiFi, Bluetooth) by changing software parameters rather than requiring dedicated hardware for each standard.
3Measurement precision
If high sampling rate and high bit-depth converters are used to ensure satisfactory signal quality, then signal quality is improved, but power consumption and device bulk increase
Solution Approach 1:
The patent segments the signal processing into frequency components, allowing each component to be processed with lower sampling rates and bit depths appropriate to its specific frequency range. This maintains overall signal quality while reducing the specifications (and power consumption) of individual converter components.
Data Source
AI summary
A method for generating a radio frequency signal, wherein a signal to be transmitted is decomposed into a weighted sum of periodic basic signals of different frequencies.