Receiver ADC Bandwidth Switching for Channel-Dependent Power Saving
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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 development of an energy-efficient receiver system that utilizes an Internet Protocol (IP) low-noise block-downconverter (LNB) and intermediate frequency (IF) processing modules, which dynamically adjust power consumption based on selected channels by configuring different signal paths with varying bandwidths and power characteristics, optimizing power usage while maintaining 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 signal processing paths (first path, second path, third path), each capable of handling different bandwidth requirements. This segmentation allows the system to activate only the necessary paths based on current channel selections, reducing overall power consumption while maintaining full signal processing capability when needed.
Solution Approach 2:
The system dynamically configures signal paths based on the number of channels selected. When multiple channels are selected, the system activates wider bandwidth paths; when fewer channels are selected, it switches to narrower bandwidth paths. This dynamic adaptation optimizes power consumption according to actual processing requirements without compromising signal processing capability.
2Reliability
If full bandwidth signal processing is always active, then signal processing capability is maximized, but power consumption increases
Solution Approach 1:
The system changes the bandwidth parameter of active signal paths based on the number of channels being processed. The first signal path handles wide bandwidth when multiple channels are selected, while the second and third paths handle narrower bandwidths when fewer channels are selected. This parameter adaptation allows the system to maintain adequate signal processing capability while significantly reducing power consumption during low-demand operations.
Solution Approach 2:
Different signal paths are assigned different bandwidth characteristics optimized for specific processing scenarios. The first path is optimized for wideband multi-channel processing, while the second and third paths are optimized for narrowband single-channel or dual-channel processing. This local optimization allows each path to operate efficiently in its designated mode without wasting power on unnecessary bandwidth capacity.
3Adaptability or versatility
If multiple signal paths are activated simultaneously, then versatility is improved, but device complexity increases
Solution Approach 1:
The receiver architecture is segmented into distinct signal paths with clearly defined functions and bandwidth characteristics. This segmentation provides versatility by enabling flexible channel selection combinations while managing complexity through modular design, where each path can be independently configured and controlled based on current processing needs.
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.