Receiver ADC Bandwidth Switching for Lower-Power Channel Selection
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Solution Overview
Problem
Conventional receivers are large and consume excessive power, making them inefficient in terms of size and energy usage.
Innovation Solution
The system employs an energy-efficient receiver architecture that includes an Internet Protocol (IP) low-noise block-downconverter (LNB) and intermediate frequency (IF) processing modules, which dynamically configure signal paths based on selected channels to minimize power consumption by using a combination of narrowband and wideband signal paths, with control signals from a digital processing module to optimize power usage versus performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If conventional receiver architecture is used, then signal processing capability is maintained, but power consumption is excessive and device size is large
Solution Approach 1:
The receiver is divided into multiple independent processing paths: a wideband path for initial signal acquisition and a narrowband path for specific channel processing. This segmentation allows the system to activate only the necessary path based on operational requirements, significantly reducing power consumption while maintaining signal processing capability.
Solution Approach 2:
The system dynamically switches between wideband and narrowband processing modes based on the operational state. During signal acquisition, the wideband path is activated; during normal channel reception, the narrowband path is used. This dynamic adaptation optimizes power consumption while ensuring reliable signal processing for different operational phases.
2Adaptability or versatility
If wideband signal processing is used for all channels, then comprehensive signal coverage is achieved, but power consumption increases
Solution Approach 1:
Different processing qualities are applied to different signal paths. The wideband path provides comprehensive signal coverage with high adaptability, while the narrowband path provides targeted processing for specific channels with lower power consumption. The system selectively applies the appropriate processing quality based on the required signal coverage.
Solution Approach 2:
The system changes the bandwidth parameter of the signal processing path based on operational requirements. When comprehensive coverage is needed, wideband processing is used; when processing specific channels is sufficient, narrowband processing is activated. This parameter change allows the system to balance signal coverage and power consumption effectively.
3Use of energy by moving object
If narrowband processing is used for all channels, then power consumption is reduced, but signal processing flexibility is limited
Solution Approach 1:
The system dynamically adapts the processing bandwidth based on the number and type of channels being processed. When multiple channels or wideband signals are required, the system switches to wideband processing to maintain flexibility. When processing a single narrowband channel, it uses narrowband processing to reduce power consumption. This dynamic adaptation resolves the contradiction between power consumption and processing flexibility.
Data Source
AI summary
One or more circuits may comprise at least one first-type analog-to-digital converter (ADC) and at least one second-type ADC. The circuit(s) may be operable to receive a plurality of signals, each of which may comprise a plurality of channels. The circuit(s) may be operable to digitize a selected one or more of the channels. Which, if any, of the selected channels are digitized via the at least one first-type ADC and which, if any, of the selected channels are digitized via the at least one second-type ADC, may be based on which of the plurality of channels are the selected channels and/or based on power consumption of the circuit(s). A bandwidth of each first-type ADC may be on the order of the bandwidth of one of the received signals. A bandwidth of each second-type ADC may be on the order of the bandwidth of one of the plurality of channels.