Second order audio continuous time delta sigma modulator with resonator
US-2024275399-A1 · Aug 15, 2024 · US
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characterised by the type of bandpass filters used
characterised by the type of bandpass filters used · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H03M3/404 |
| Official title | {characterised by the type of bandpass filters used} |
| Display label | characterised by the type of bandpass filters used |
| Total patents | 23 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 7 |
| 2016 | 2 |
| 2017 | 1 |
| 2018 | 2 |
| 2019 | 3 |
| 2020 | 3 |
| 2021 | 1 |
| 2022 | 1 |
| 2023 | 2 |
| 2024 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Sigma delta modulator and method therefor
US-11606102-B2 · Mar 14, 2023 · US
Apparatus for mitigating wandering spurs in a fractional-N frequency synthesizer
US-11552645-B2 · Jan 10, 2023 · US
Sigma delta modulator and method therefor
US-2022416809-A1 · Dec 29, 2022 · US
Apparatus for mitigating wandering spurs in a fractional-n frequency synthesizer
US-2021399734-A1 · Dec 23, 2021 · US
Correction method and correction circuit for sigma-delta modulator
US-10742230-B2 · Aug 11, 2020 · US
Modified pi-sigma-delta-modulator based digital signal processing system for wide-band applications
US-10615819-B1 · Apr 7, 2020 · US
Correction method and correction circuit for sigma-delta modulator
US-2020091929-A1 · Mar 19, 2020 · US
Modulator for a digital amplifier
US-10476517-B2 · Nov 12, 2019 · US
Modulator for a digital amplifier
US-2019131999-A1 · May 2, 2019 · US
Parameterizable bandpass delta-sigma modulator
US-10181862-B1 · Jan 15, 2019 · US
High-linearity sigma-delta converter
US-10153778-B2 · Dec 11, 2018 · US
High-linearity sigma-delta converter
US-2018034471-A1 · Feb 1, 2018 · US
Sigma-delta analog-to-digital converter with auto tunable loop filter
US-9762259-B1 · Sep 12, 2017 · US
Signal modulating device capable of reducing peaking in signal transfer function
US-9312879-B2 · Apr 12, 2016 · US
Signal modulating device capable of reducing peaking in signal transfer function
US-2016056835-A1 · Feb 25, 2016 · US
Communication unit, digital band-pass sigma-delta modulator and method therefor
US-9166617-B1 · Oct 20, 2015 · US
Communication unit, digital band-pass sigma-delta modulator and method therefor
US-2015280732-A1 · Oct 1, 2015 · US
Delta-sigma modulator
US-9143145-B2 · Sep 22, 2015 · US
Delta-sigma modulator
US-2015200678-A1 · Jul 16, 2015 · US