Super-regenerative Receiver Dynamic Bandwidth Control
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Solution Overview
Problem
Ultra-low power analog circuits in wireless sensor networks face performance degradation due to their low selective characteristics, leading to reduced signal-to-noise ratio and increased power consumption, which is a challenge in achieving both low power and high performance in wireless communication systems.
Innovation Solution
An ultra-low power super-regenerative receiver is designed with a quench waveform generator, super-regenerative oscillator, and bandwidth adjustor to dynamically adjust the bandwidth of the oscillation signal based on the received signal, improving signal processing and reducing power consumption by controlling the quench waveform's period and slope, thereby enhancing signal detection and synchronization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If ultra-low power analog circuit is used in wireless sensor networks, then power consumption is reduced, but signal detection performance degrades due to low selective characteristics
Solution Approach 1:
The patent implements dynamic bandwidth adjustment by controlling the quench waveform parameters (period and slope) based on the received signal characteristics. The bandwidth adjustor dynamically modifies the quench waveform to optimize the receiver's selective characteristics for different signal conditions, allowing the system to adapt between power saving mode and high performance mode as needed
Solution Approach 2:
The patent changes the parameters of the quench waveform (period and slope) to dynamically adjust the receiver bandwidth. By modifying these waveform parameters, the system can optimize its frequency selectivity and signal detection performance while maintaining ultra-low power operation, directly addressing the contradiction between power consumption and detection performance
2Device complexity
If fixed bandwidth is used in super-regenerative receiver, then device complexity is reduced, but adaptability to different signal bandwidths deteriorates
Solution Approach 1:
The patent introduces dynamic bandwidth adjustment capability through the bandwidth adjustor that controls quench waveform parameters. This allows the receiver to adapt its bandwidth to match different signal characteristics without requiring multiple fixed bandwidth receivers or complex switching mechanisms, achieving versatility with minimal added complexity
Solution Approach 2:
The quench waveform generator and bandwidth adjustor work together to provide a universal receiver that can handle multiple signal bandwidths. The same basic super-regenerative receiver structure, when equipped with the bandwidth adjustor, can adapt to various signal conditions, making it multi-functional rather than requiring separate specialized receivers
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
The solution effectively improves signal detection and synchronization in wireless sensor networks by dynamically adjusting the bandwidth of the oscillation signal, reducing power consumption, and maintaining performance, thus addressing the limitations of existing ultra-low power analog circuits.
Implementation Method 1
a super-regenerative oscillator configured to generate an oscillation signal based on the quench waveform
Implementation Method 2
a quench waveform generator configured to generate a quench waveform
Implementation Method 3
a bandwidth adjustor configured to control the quench waveform based on a bandwidth of a signal received by the ultra-low power super-regenerative receiver, to dynamically adjust a bandwidth of the oscillation signal
Data Source
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AI summary
An ultra-low power super-regenerative receiver and method thereof are provided. The ultra-low power super-regenerative receiver includes a quench waveform generator configured to generate a quench waveform. The ultra-low power super-regenerative receiver further includes a super-regenerative oscillator configured to generate an oscillation signal based on the quench waveform. The ultra-low power super-regenerative receiver further includes a bandwidth adjustor configured to control the quench waveform based on a bandwidth of a signal received by the ultra-low power super-regenerative receiver, to dynamically adjust a bandwidth of the oscillation signal.