Multi-Band RF Module Using Frequency Mixing and ADC Merging
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Solution Overview
Problem
Existing radio frequency modules struggle to process signals from multiple frequency bands simultaneously in a simple and cost-effective manner, leading to increased complexity, hardware scale, and power consumption.
Innovation Solution
A radio frequency module structure that uses multiplexers, frequency mixing units, combiners, and a dual-channel or multi-channel ADC to merge and process signals from multiple frequency bands, reducing hardware complexity and cost while improving reliability and reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple radio frequency modules are used to support multiple frequency bands, then the frequency band coverage is improved, but the device complexity and hardware scale increase
Solution Approach 1:
The patent combines multiple radio frequency modules into a single integrated module that can process multiple frequency bands simultaneously. The integrated module includes multiple receiving channels with different local oscillators and intermediate frequency ranges, allowing it to handle signals from multiple frequency bands through a unified structure, thereby reducing device complexity while maintaining frequency band coverage
Solution Approach 2:
The patent designs a universal radio frequency module that can process multiple frequency bands through configurable local oscillators and intermediate frequency ranges. Each receiving channel can be configured with different local oscillator frequencies and intermediate frequency parameters to adapt to different frequency bands, making the module multi-functional and capable of supporting various frequency bands without requiring separate dedicated modules
2Adaptability or versatility
If multiple radio frequency modules are used to support multiple frequency bands, then the frequency band coverage is improved, but the power consumption increases
Solution Approach 1:
The patent merges multiple radio frequency modules into a single integrated module, consolidating power consumption sources. The integrated module shares common components such as the receiving channel structure, signal processing paths, and power supply infrastructure, thereby reducing total power consumption compared to running multiple separate modules while still providing multi-frequency band coverage
3Device complexity
If a single radio frequency module processes multiple frequency bands, then the device complexity is reduced, but the signal processing complexity increases
Solution Approach 1:
The patent segments the signal processing within the integrated module by assigning different local oscillators and intermediate frequency ranges to different receiving channels. This segmentation allows each channel to process specific frequency bands independently through frequency conversion, separating the complex multi-frequency processing into manageable channel-specific operations that are easier to implement and control
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
This approach allows for efficient processing of multiple frequency bands using a single radio frequency module, simplifying the transceiver structure, reducing hardware requirements, and lowering power consumption while maintaining reliability.
Implementation Method 1
down frequency mix the radio frequency signals of different frequency bands through local oscillators to different frequency ranges of an intermediate frequency
Data Source
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AI summary
A method and a device for supporting multiple bands coexistence in a radio frequency module are provided in the embodiments of the present invention. The method includes: receiving radio frequency signals of at least two frequency bands; down frequency mixing the radio frequency signals of different frequency bands through a local oscillator to different intermediate frequency ranges to obtain intermediate frequency signals within the different frequency ranges corresponding to the different frequency bands; merging the intermediate frequency signals within the different intermediate frequency ranges corresponding to the different frequency bands in frequency domain; and performing intermediate frequency conversion from analog to digital for the merged intermediate frequency signals through a multi-channel analog-digital converter. The method and device in the embodiments of the present invention can implement concurrent processing of signals in at least two frequency bands by using one radio frequency module in a simple way.