Synchronized Resonator Oscillator Architecture for Lower Phase Noise
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Solution Overview
Problem
Existing resonant devices in micro-electronic circuits have insufficient performance and require a new architecture to improve their characteristics, particularly in terms of energy consumption, surface area, and volume, while integrating oscillators within chips for applications like gas-phase chemical sensors and mass spectrometers.
Innovation Solution
A resonant device comprising a plurality of synchronized oscillators, each with a resonator and associated detection and excitation means, connected through a feedback loop with a common excitation point and capacitive load, allowing for synchronization and adjustment of resonance frequencies without mechanical or electromagnetic coupling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single electromechanical resonator is used in an oscillator, then the device occupies additional surface area and volume, but the performance is insufficient
Solution Approach 1:
The patent merges multiple resonators (at least two) into a single integrated oscillator structure, where they share common elements such as the capacitive load and feedback loop. This combining approach improves oscillator performance through mutual synchronization and enhanced stability while reducing the total surface area and volume compared to using separate discrete oscillators.
2Reliability
If multiple resonators are used to improve performance, then the device complexity increases, but phase noise is reduced
Solution Approach 1:
Multiple resonators are combined in an integrated oscillator where they share common feedback loops and capacitive loads. This merging reduces device complexity compared to having separate oscillators, while the interaction between resonators provides phase noise reduction through synchronization effects.
Solution Approach 2:
The patent employs feedback loops that connect the resonators to their excitation inputs, with the feedback controlled by detection signals from the resonators themselves. This feedback mechanism enables automatic synchronization between multiple resonators, reducing phase noise without requiring complex external control systems.
3Use of energy by moving object
If discrete oscillators are used, then energy consumption is higher, but integrating oscillators reduces energy efficiency
Solution Approach 1:
The patent integrates multiple resonators into a unified oscillator structure that shares common components including capacitive loads, feedback loops, and control circuits. This integration eliminates redundant energy-consuming elements found in discrete oscillators, reducing total energy consumption while maintaining manufacturability through standardized integrated circuit fabrication processes.
4Stability of the object's composition
If resonators are mechanically coupled to synchronize them, then the structure becomes complex, but synchronization is achieved
Solution Approach 1:
The patent replaces mechanical coupling between resonators with electrical coupling through shared feedback loops and capacitive loads. This substitution eliminates complex mechanical structures while achieving synchronization through electrical signal interaction and feedback control, significantly reducing device complexity.
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 enhances performance by reducing phase noise and simplifying the feedback loop architecture, enabling easier resonance frequency adjustment and improved energy efficiency, while maintaining a compact size compatible with integrated circuits.
Implementation Method 1
each oscillator comprising a resonator (1) having an excitation input (E) and comprising detection means providing detection signals representative of the oscillation of the resonator
Implementation Method 2
the detection signals controlling the conductivity of said feedback loop of the oscillator
Implementation Method 3
a capacitive load being connected between said common point and a reference voltage
Data Source
AI summary
The device resonant comprises a plurality of synchronized oscillators. Each oscillator comprises a resonator which comprises detection means providing detection signals representative of oscillation of the resonator to a feedback loop connected to an excitation input of the resonator. The detection signals control the conductivity of the feedback loop of the oscillator. The excitation inputs of all the resonators are connected to a common point which constitutes the output of the resonant device. A capacitive load is connected between said common point and a reference voltage.