Super-Regenerative UWB Receiver for Low-Power Signal Detection
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Solution Overview
Problem
Current ultra-wideband (UWB) receivers face challenges in achieving low power consumption and simplicity while maintaining high bandwidth and temporal resolution, particularly in diverse environments, and existing solutions are either complex or inefficient in energy usage.
Innovation Solution
A super-regeneration detector-based receiver architecture with adaptive instability control and damping optimization is used to optimize bandwidth and sensitivity for UWB signals, incorporating control means for adapting to signal types and environments, including multipath scenarios, to enhance detection performance and reduce energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a finger receiver architecture with multiple active mixers is used to collect multiple propagation paths, then the reception capability in diverse environments is improved, but the device complexity and power consumption increase
Solution Approach 1:
The patent combines multiple propagation path receptions into a single receiver architecture by using a super-regenerative detector that can process wideband signals containing multiple paths simultaneously, eliminating the need for separate mixers for each path while maintaining the ability to collect and process diverse environmental signals
2Measurement precision
If fast sampling is performed to respect the Nyquist criterion for high bandwidth UWB signals, then the measurement precision is improved, but the power consumption increases due to high frequency synthesis and digital processing
Solution Approach 1:
The patent employs periodic super-regenerative oscillation cycles that naturally sample the UWB signal at high temporal resolution without requiring continuous fast digital sampling. The detector oscillates between regenerative and quenching phases, creating periodic detection windows that capture signal timing information with nanosecond precision while consuming minimal power during the quenching intervals
Solution Approach 2:
The patent replaces the mechanical/electronic fast sampling system with a super-regenerative detection mechanism that achieves high temporal resolution through oscillatory behavior rather than continuous digital sampling, significantly reducing the power consumption associated with high-frequency synthesizers and digital processors
3Measurement precision
If significant amplification is applied to detect UWB signals at very low levels, then the detection sensitivity is improved, but the power consumption increases
Solution Approach 1:
The patent changes the operating parameters of the detection system by using super-regenerative oscillation that provides extremely high gain through positive feedback during the regenerative phase. This oscillatory amplification mechanism achieves detection of very low-level UWB signals without requiring continuous high-power amplification, as the detector only needs to provide gain during brief regenerative windows
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 achieves low power consumption, high bandwidth, and excellent temporal resolution, enabling efficient communication and localization capabilities while minimizing energy expenditure, particularly suited for UWB signals in varied environments.
Implementation Method 1
A receiver of radiofrequency waves implementing UWB technology and using a super-regenerative detector
Data Source
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AI summary
The receiver has an oscillator including a signal formatting stage e.g. threshold detector, at its output for converting a base-band of an oscillating signal to a mid-band frequency of the oscillator. A demodulation block extracts information from the signal, and an aerial is provided in upstream of the oscillator. An amplifier limits an overall noise level in a reception chain, and isolates the oscillating signal from the aerial. A programming unit controls adaptation of the receiver to the type of signals to be received. Independent claims are also included for the following: (1) a communication unit comprising an oscillating unit (2) a method of receiving an impulse ultra wideband radiofrequency signal (3) a method of triggering a wireless apparatus (4) a method of locating a communication unit by another communication unit (5) a send/receive method.