Microsoft patents method to tune resonators using complex math
Microsoft describes a way to find the exact frequency at which a resonator vibrates most strongly. The method involves changing the input signal's frequency and using mathematical derivatives to pinpoint the resonance point.
In the filing’s own words
A method for exciting a resonator at an estimated resonance frequency of the resonator comprises: (a) varying a frequency of an input signal applied to the resonator while recording an output signal from the resonator; (b) for each of a series of frequency values of the input signal, computing noise-filtered, complex first and second derivatives of a ratio of the output signal to the input signal; (c) for each of the series of frequency values of the input signal, computing a real part of a dot product of the complex first and second derivatives as vectors projected onto a complex plane; and (d) exciting the resonator an excitation frequency where the real part vanishes.
What exactly they claim (claim 1)
1. A method for exciting a resonator at an estimated resonance frequency of the resonator, the method comprising: varying a frequency of an input signal applied to the resonator while recording an output signal from the resonator; for each of a series of frequency values of the input signal, computing noise-filtered, complex first and second derivatives of a ratio of the output signal to the input signal; for each of the series of frequency values of the input signal, computing a real part of a dot product of the complex first and second derivatives as vectors projected onto a complex plane; and exciting the resonator an excitation frequency where the real part of the dot product vanishes.
Facts
- Company
- Microsoft (Microsoft Technology Licensing, LLC)
- Official title
- RESONATOR TUNING
- Publication number
- US20260269803A1
- Application number
- 19010873
- Filed
- Jan 6, 2025
- Published
- Sep 10, 2026
- Inventors
- 3
- Claims
- 20
Classified under
H03H 9/02086 Electricity & electronicsG06N 10/40 Physics & computingH03H 9/02818 Electricity & electronicsH03H 2009/02165 Electricity & electronicsMore from Microsoft in Chips & hardware
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Summaries are simplified from the filing’s own abstract and first claim. A patent filing is not a product announcement.
Patent data and drawings: U.S. Patent and Trademark Office (USPTO). Nebula is not affiliated with or endorsed by the USPTO.