Frequency-Converting Super-Regenerative Receiver for Low-Power Channel Tuning
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Solution Overview
Problem
Current wireless communication receivers and transmitters face challenges in reducing power consumption and improving frequency stability and range, particularly in low-power applications like IoT devices, where existing technologies consume excessive power and struggle with complex frequency mixing and wide-bandwidth analog-to-digital conversion.
Innovation Solution
The implementation of a super-regenerative receiver architecture using a MEMS-based resonator with a frequency mixer and controlled oscillator, which allows for low-power operation, frequency adjustment, and channel selection, enabling the use of modern protocols like Bluetooth, Zigbee, and GSM, while reducing component count and simplifying data communication complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional frequency mixing and wide-bandwidth analog to digital conversion are used, then frequency range and stability are improved, but power consumption increases significantly
Solution Approach 1:
The patent extracts and eliminates the power-hungry frequency mixing and wide-bandwidth analog-to-digital conversion stages from the receiver architecture. By using a super-regenerative receiver with a high-Q resonator, the system directly detects FSK modulated signals without requiring these intermediate processing stages, thereby achieving frequency stability through the resonator's high Q-factor while dramatically reducing power consumption.
Solution Approach 2:
The patent replaces the conventional electronic frequency mixing mechanism with a resonator-based frequency selection mechanism. The high-Q resonator naturally selects the desired frequency through its resonance properties, substituting the need for active frequency mixing circuits and reducing the complexity and power consumption of the frequency processing chain.
2Use of energy by moving object
If super-regenerative receiver architecture is used, then power consumption is reduced, but frequency range and channel selection capability are limited
Solution Approach 1:
The patent introduces a voltage-controlled oscillator (VCO) that can dynamically tune the resonator's operating frequency. This dynamic tuning capability allows the super-regenerative receiver to adapt to different frequency channels and protocols (Bluetooth, Zigbee, GSM) while maintaining the low-power super-regenerative architecture, thus achieving both low power consumption and wide frequency range adaptability.
Solution Approach 2:
The patent designs a universal receiver architecture that can operate with multiple wireless protocols by tuning the resonator frequency. The combination of the super-regenerative receiver core with the VCO-tunable resonator creates a multi-functional system that can detect FSK modulated signals across different frequency bands, making the receiver adaptable to various communication standards without requiring separate dedicated receivers for each protocol.
3Measurement precision
If high Q-factor resonators are used, then frequency discrimination capability is improved, but device complexity and component count increase
Solution Approach 1:
The patent merges the frequency discrimination function into the core super-regenerative detection mechanism itself. The high-Q resonator is integrated directly into the feedback loop of the super-regenerative receiver, allowing it to perform both frequency selection and signal detection in a unified structure. This eliminates the need for separate frequency mixing and filtering components, reducing overall device complexity while maintaining excellent frequency discrimination capability.
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
This solution achieves low power consumption, enabling continuous operation on coin cell batteries for years, while improving frequency stability and range, and allowing for the use of various wireless protocols with reduced complexity and increased compatibility.
Implementation Method 1
a resonator and a feedback element with variable gain coupled to the resonator to form a positive feedback loop
Implementation Method 2
The present disclosure includes a new design which provides frequency conversion via a frequency mixer to permit frequency adjustment and channel selection
Data Source
AI summary
The present disclosure provides a frequency-converting super-regenerative transceiver with a frequency mixer coupled to a resonator and a feedback element having a controllable gain. The frequency-converting super-regenerative transceiver utilizes the frequency mixer to shift the incoming frequencies, based on a controlled oscillator, to match the frequency of operation of the super-regenerative transceiver. The frequency-converting super-regenerative transceivers described herein permit signal data capture over a broad range of frequencies and for a range of communication protocols. The frequency-converting super-regenerative transceivers described herein are tunable, consume very little power for operation and maintenance, and permit long term operation even when powered by very small power sources (e.g., coin batteries).