Configurable RF Channelizer for User-Defined Bandwidth Tuning
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Solution Overview
Problem
Current signal intelligence systems face inefficiencies in processing full-bandwidth RF streams, often overloading computational resources due to fixed digitization bandwidth and dedicated receiver modes that do not adapt to varying bandwidth needs.
Innovation Solution
A dynamically scalable and controllable channelizing module that selects and tunes specific channels to match user-defined center frequencies and bandwidths, utilizing a digital signal processor with FIR filter blocks and memory for downsampling and filtering, allowing for efficient extraction of user-defined signal portions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If full-bandwidth RF streams are processed using fixed digitization bandwidth and dedicated receiver modes, then the system can maintain simple architecture and operation, but computational resources become overloaded and resource utilization deteriorates
Solution Approach 1:
The patent implements dynamic bandwidth configuration where the digitization bandwidth is no longer fixed but adapts to the specific needs of each application. The receiver asset can be dynamically reconfigured to process different bandwidth requirements, transforming a static system into a flexible one that optimizes computational resource usage based on real-time demands.
Solution Approach 2:
The system changes the key parameter of digitization bandwidth from a fixed value to a configurable variable. By allowing the bandwidth parameter to be adjusted according to application requirements, the system achieves better resource utilization without fundamentally redesigning the architecture, thus resolving the contradiction between simplicity and efficiency.
2Adaptability or versatility
If controllable digitization bandwidth is implemented with dedicated mode, then the system can improve adaptability to different bandwidth needs, but computational overload occurs when processing full-bandwidth streams
Solution Approach 1:
The patent extracts only the necessary portion of the full-bandwidth stream that each application requires. Instead of processing the entire bandwidth for every application, the system selectively extracts and processes only the relevant frequency bands, thereby reducing computational load while maintaining adaptability to different bandwidth needs.
Solution Approach 2:
The system applies partial action by processing only the subset of bandwidth that is actually needed for each application rather than the full bandwidth. This selective processing approach reduces computational overhead while preserving the ability to adapt to varying bandwidth requirements across different applications.
3Ease of operation
If dedicated receiver assets are assigned to single applications, then the system can simplify operation and control, but resource utilization deteriorates when applications do not need full bandwidth
Solution Approach 1:
The patent makes the receiver asset universal by enabling it to serve multiple applications with different bandwidth requirements. The same receiver can be dynamically allocated to different applications based on their needs, eliminating the need for dedicated hardware for each application while maintaining simple operation through centralized control.
Solution Approach 2:
The system introduces dynamic allocation of the receiver asset to different applications. Rather than static dedication, the receiver can be reconfigured and reassigned based on real-time demands, achieving both multi-functionality and operational simplicity through dynamic resource management.
Data Source
AI summary
A digital signal processor is designed to channelize an input signal, and includes a channelizer circuit and a plurality of tuning modules. The channelizer circuit is designed to receive an input signal having a first bandwidth and to channelize the input signal into a first set of channels each having a bandwidth smaller than the first bandwidth as a first output signal and to channelize the input signal into a second set of channels having a bandwidth smaller than the first bandwidth as a second output signal. The plurality of tuning modules are designed to receive one or more channels from the first output signal or the second output signal and to further downsample the one or more channels to a user-defined bandwidth at a user-defined center frequency. Each of the plurality of tuning modules include a plurality of FIR filter blocks and a memory having a plurality of FIR filter coefficients.