Synchronized Resonator Circuit With Common Capacitive Load
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Solution Overview
Problem
Existing oscillators in microelectronic circuits have insufficient performance, necessitating a new architecture that integrates multiple synchronized oscillators with a common excitation point and capacitive load to enhance frequency synchronization and reduce phase noise.
Innovation Solution
A resonant device comprising multiple synchronized oscillators, each with an electromechanical resonator and a feedback loop connected to a common excitation point, utilizing a capacitive load between the common point and a reference voltage to synchronize oscillations and adjust resonance frequencies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple synchronized oscillators are integrated with a common excitation point and capacitive load, then frequency synchronization and phase noise reduction are improved, but device complexity increases
Solution Approach 1:
Multiple oscillators are merged by connecting their excitation inputs to a common excitation point and sharing a common capacitive load between the common point and reference voltage. This merging approach synchronizes the oscillators while reducing phase noise through constructive interference of their output signals, achieving improved reliability without requiring complex individual oscillator designs.
Solution Approach 2:
The common excitation point and shared capacitive load serve multiple oscillators simultaneously, providing a universal control mechanism for frequency synchronization. This multi-functional architecture allows a single control node to regulate the frequency of all oscillators in the array, simplifying the overall system while maintaining precise synchronization.
2Reliability
If multiple synchronized oscillators are integrated with a common excitation point and capacitive load, then phase noise is reduced, but manufacturing precision requirements increase
Solution Approach 1:
The resonant devices utilize the common capacitive load to dynamically adjust and fine-tune the resonance frequencies of individual oscillators. By varying the capacitance value, the system can compensate for manufacturing variations and achieve precise frequency matching across all oscillators, thereby reducing phase noise while accommodating standard manufacturing tolerances.
3Reliability
If oscillators are electrically connected in parallel with common excitation point, then synchronization is achieved, but surface area increases
Solution Approach 1:
Multiple oscillators are merged by connecting their excitation inputs to a common excitation point and sharing a common capacitive load between the common point and reference voltage. This merging approach synchronizes the oscillators while reducing phase noise through constructive interference of their output signals, achieving improved reliability without requiring complex individual oscillator designs.
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 configuration improves performance by reducing phase noise and simplifying the feedback loop architecture, allowing for easier adjustment of resonance frequencies and increased robustness against frequency dispersion, while minimizing surface area and energy consumption.
Implementation Method 1
a capacitive load being connected between said common point and a reference voltage
Implementation Method 2
each oscillator comprising an electromechanical resonator comprising detection means supplying detection signals, representative of the oscillation of the resonator, to a feedback loop connected to an excitation input of the resonator
Data Source
Figure 1
Figure 2
AI summary
The device has synchronized oscillators provided with resonators (1) e.g. electro mechanic resonators. Detection units provide detection signals to reaction loops connected to excitation inputs (E) of the resonators, where the signals control conductivity of the reaction loops. The excitation inputs are connected to a common point to form an output of the device. A capacitive load i.e. capacitor (5), is connected between the common point and reference voltage (GND).