Amplifier comprising two parallel coupled amplifier units
US-10951169-B2 · Mar 16, 2021 · US
the amplifier stage being a common drain coupled MOSFET, i.e. source follower
the amplifier stage being a common drain coupled MOSFET, i.e. source follower · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H03F2200/69 |
| Official title | the amplifier stage being a common drain coupled MOSFET, i.e. source follower |
| Display label | the amplifier stage being a common drain coupled MOSFET, i.e. source follower |
| Total patents | 76 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 5 |
| 2017 | 15 |
| 2018 | 14 |
| 2019 | 8 |
| 2020 | 13 |
| 2021 | 3 |
| 2022 | 6 |
| 2023 | 4 |
| 2024 | 1 |
| 2025 | 3 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Differential source follower with current steering devices
US-2021021277-A1 · Jan 21, 2021 · US
Voltage follower circuit
US-10873305-B2 · Dec 22, 2020 · US
Differential source follower with current steering devices
US-2020274545-A1 · Aug 27, 2020 · US
Differential source follower with current steering devices
US-10742227-B1 · Aug 11, 2020 · US
Source follower
US-10700647-B2 · Jun 30, 2020 · US
Auto-zero technique for opamps with a source-follower output stage based on replica referencing
US-10673398-B2 · Jun 2, 2020 · US
Voltage buffer for input voltages above a supply voltage or below ground voltage
US-10644659-B2 · May 5, 2020 · US
Auto-zero technique for opamps with a source-follower output stage based on replica referencing
US-2020127623-A1 · Apr 23, 2020 · US
Buffer stage and control circuit
US-10613560-B2 · Apr 7, 2020 · US
Voltage follower circuit
US-2020091885-A1 · Mar 19, 2020 · US
Voltage Buffer for Input Voltages Above a Supply Voltage or Below Ground Voltage
US-2020067467-A1 · Feb 27, 2020 · US
Amplifier with a symmetric current profile
US-2020036346-A1 · Jan 30, 2020 · US
Source follower
US-2020036347-A1 · Jan 30, 2020 · US
Amplifier comprising two parallel coupled amplifier units
US-2020028470-A1 · Jan 23, 2020 · US
Systems for voltage regulation using signal buffers and related methods
US-10504564-B2 · Dec 10, 2019 · US
Source follower
US-10476447-B2 · Nov 12, 2019 · US
Switched-capacitor buffer and related methods
US-10333394-B2 · Jun 25, 2019 · US
Systems for voltage regulation using signal buffers and related methods
US-2019080729-A1 · Mar 14, 2019 · US
Source follower based envelope tracking for power amplifier biasing
US-10218326-B2 · Feb 26, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H03F2200/69?
- CPC H03F2200/69 is the Cooperative Patent Classification code for “the amplifier stage being a common drain coupled MOSFET, i.e. source follower.”
- How many patents are filed under CPC H03F2200/69 (the amplifier stage being a common drain coupled MOSFET, i.e. source follower)?
- Our database includes 76 publications tagged with this CPC code.
- Is patent activity under CPC H03F2200/69 growing?
- Publication counts under this code: 1 in 2024 vs 3 in 2025 (latest complete years).