Capacitive-coupled chopper instrumentation amplifiers and associated methods
US-10797661-B2 · Oct 6, 2020 · US
the DC-isolation amplifier, e.g. chopper amplifier, modulation/demodulation amplifier, uses capacitive isolation means, e.g. capacitors
the DC-isolation amplifier, e.g. chopper amplifier, modulation/demodulation amplifier, uses capacitive isolation means, e.g. capacitors · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H03F2200/271 |
| Official title | the DC-isolation amplifier, e.g. chopper amplifier, modulation/demodulation amplifier, uses capacitive isolation means, e.g. capacitors |
| Display label | the DC-isolation amplifier, e.g. chopper amplifier, modulation/demodulation amplifier, uses capacitive isolation means, e.g. capacitors |
| Total patents | 112 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 7 |
| 2016 | 10 |
| 2017 | 11 |
| 2018 | 16 |
| 2019 | 11 |
| 2020 | 6 |
| 2021 | 9 |
| 2022 | 11 |
| 2023 | 10 |
| 2024 | 10 |
| 2025 | 8 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Power-on-reset and phase comparator for chopper amplifiers
US-10727794-B2 · Jul 28, 2020 · US
A circuit arrangement and a method for operating a circuit arrangement
US-2020220510-A1 · Jul 9, 2020 · US
Capacitively coupled chopper amplifier
US-10630245-B2 · Apr 21, 2020 · US
Power amplification device, terminal having the same, and base station having the same
US-2020119701-A1 · Apr 16, 2020 · US
Power amplification device, terminal having the same, and base station having the same
US-10511271-B2 · Dec 17, 2019 · US
Ripple reduction filter for chopped amplifiers
US-10483920-B2 · Nov 19, 2019 · US
Chopper-stabilized amplifier with analog-driven level shifter
US-10411664-B2 · Sep 10, 2019 · US
Signal error calibrating method
US-2019271753-A1 · Sep 5, 2019 · US
Chopper-stabilized amplifier with analog-driven level shifter
US-2019207573-A1 · Jul 4, 2019 · US
Bidirectional current sense amplifier
US-10320346-B2 · Jun 11, 2019 · US
Capacitively coupled chopper amplifier
US-2019158035-A1 · May 23, 2019 · US
Power-on-Reset and Phase Comparator for Chopper Amplifiers
US-2019149108-A1 · May 16, 2019 · US
Capacitive-coupled chopper instrumentation amplifiers and associated methods
US-2019131943-A1 · May 2, 2019 · US
Peak detector and operational amplifier circuit therein
US-10224879-B1 · Mar 5, 2019 · US
Bidirectional current sense amplifier
US-2019068144-A1 · Feb 28, 2019 · US
Gated CDS integrator
US-10158335-B2 · Dec 18, 2018 · US
Fast settling capacitive gain amplifier circuit
US-10158334-B2 · Dec 18, 2018 · US
Low noise amplifier circuit
US-10148237-B2 · Dec 4, 2018 · US
Ripple reduction filter for chopped amplifiers
US-2018337639-A1 · Nov 22, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H03F2200/271?
- CPC H03F2200/271 is the Cooperative Patent Classification code for “the DC-isolation amplifier, e.g. chopper amplifier, modulation/demodulation amplifier, uses capacitive isolation means, e.g. capacitors.”
- How many patents are filed under CPC H03F2200/271 (the DC-isolation amplifier, e.g. chopper amplifier, modulation/demodulation amplifier, uses capacitive isolation means, e.g. capacitors)?
- Our database includes 112 publications tagged with this CPC code.
- Is patent activity under CPC H03F2200/271 growing?
- Publication counts under this code: 10 in 2024 vs 8 in 2025 (latest complete years).