Mechanical Resonator Oscillator Tuning for Arbitrary Frequencies
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Solution Overview
Problem
Conventional oscillators are limited to producing standard frequencies, making it costly and inefficient to manufacture precise frequency signals, and they cannot easily accommodate oscillators with arbitrary frequencies, which restricts the use of technologies like MEMS resonators that offer better frequency stability and manufacturing ease.
Innovation Solution
A system and method that uses a mechanical resonator oscillator to produce oscillating signals of arbitrary frequencies, employing multiple tuning signals and automatic frequency control to adjust the frequency to match standard oscillator frequencies, allowing for the use of less precise resonator technologies like MEMS resonators.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional crystal oscillators are used to provide precise standard frequencies, then frequency precision is improved, but manufacturing cost and complexity increase
Solution Approach 1:
The patent applies parameter changes by using a mechanical resonator with a resonant frequency that is intentionally selected to be close to, but not exactly equal to, a desired standard frequency. The system then applies frequency tuning signals to adjust the oscillation frequency from the natural resonant frequency to the precise standard frequency, thereby achieving both manufacturing ease and frequency precision.
2Manufacturing precision
If oscillators are manufactured to provide standard frequencies only, then manufacturing precision is improved, but adaptability to arbitrary frequencies deteriorates
Solution Approach 1:
The patent implements dynamics by making the oscillator frequency可调 (tunable) through the application of frequency tuning signals. The mechanical resonator can be adjusted to operate at different frequencies by applying voltage signals that modify the resonant characteristics, enabling the same oscillator to adapt to various standard frequencies and arbitrary frequencies as needed.
Solution Approach 2:
The patent achieves universality by designing an oscillator system that can serve multiple frequency requirements. The mechanical resonator combined with frequency tuning circuitry can generate both standard frequencies (for compatibility with existing systems) and arbitrary frequencies (for specialized applications), making a single oscillator design universally applicable to diverse frequency needs.
3Adaptability or versatility
If frequency tuning signals are applied to adjust oscillator frequency, then frequency adaptability is improved, but device complexity increases
Solution Approach 1:
The patent employs feedback mechanisms where frequency tuning signals are applied to the mechanical resonator based on the desired output frequency. The system monitors the oscillation frequency and adjusts the tuning signals accordingly to maintain the target frequency, creating a closed-loop control system that manages complexity through intelligent feedback rather than complex hardware.
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
Enables the use of oscillators with arbitrary frequencies, reducing manufacturing costs and improving frequency stability, while allowing for the adaptation of systems to operate effectively with non-standard frequencies, thereby simplifying the design and operation of electronic devices.
Implementation Method 1
an oscillator having a mechanical resonator and configured to produce an oscillating output signal at a natural resonant frequency of the mechanical resonator
Implementation Method 2
The circuit is configured to provide frequency tuning signals to the oscillator to adjust a frequency of the oscillating output signal from the natural resonant frequency of the mechanical resonator to a desired frequency
Implementation Method 3
The circuit is configured to generate an automatic frequency control tuning signal to maintain the oscillating signal at the desired frequency
Data Source
Figure 1A~1B
Figure 2A~2B
Figure 3
AI summary
Systems and methods for operating with oscillators configured to produce an oscillating signal having an arbitrary frequency are described. The frequency of the oscillating signal may be shifted to remove its arbitrary nature by application of multiple tuning signals or values to the oscillator. Alternatively, the arbitrary frequency may be accommodated by adjusting operation one or more components of a circuit receiving the oscillating signal.