Receiver circuit of interface circuit and operating method thereof
US-2026074707-A1 · Mar 12, 2026 · US
A source follower being used in a feedback circuit of an amplifier stage
A source follower being used in a feedback circuit of an amplifier stage · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H03F2200/151 |
| Official title | A source follower being used in a feedback circuit of an amplifier stage |
| Display label | A source follower being used in a feedback circuit of an amplifier stage |
| Total patents | 43 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 2 |
| 2017 | 5 |
| 2018 | 4 |
| 2019 | 3 |
| 2020 | 5 |
| 2021 | 1 |
| 2022 | 2 |
| 2023 | 3 |
| 2024 | 4 |
| 2025 | 8 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Amplifier circuit and current buffer thereof
US-2025274089-A1 · Aug 28, 2025 · US
Amplifier circuit for microphone, microphone circuit and electronic device
US-2025226800-A1 · Jul 10, 2025 · US
Dual-output amplifier circuit
US-2025150037-A1 · May 8, 2025 · US
Wideband channel selective amplifier structures
US-2025112603-A1 · Apr 3, 2025 · US
Transimpedance amplifier
US-12255593-B2 · Mar 18, 2025 · US
Dual output amplifier for precision resistor calibration system
US-2025038721-A1 · Jan 30, 2025 · US
Apparatus for pole frequency tracking in amplifiers and associated methods
US-12210365-B2 · Jan 28, 2025 · US
Super source follower
US-12199575-B2 · Jan 14, 2025 · US
Low dropout regulator with amplifier having feedback circuit
US-12032397-B2 · Jul 9, 2024 · US
Doherty amplifier circuit
US-2024186956-A1 · Jun 6, 2024 · US
Super source follower
US-2024154583-A1 · May 9, 2024 · US
Super source follower
US-11929719-B2 · Mar 12, 2024 · US
Super source follower
US-2023327614-A1 · Oct 12, 2023 · US
Transimpedance amplifier
US-2023238930-A1 · Jul 27, 2023 · US
Method and apparatus for reducing power-up overstress of capacitor-less regulating circuits
US-11599132-B2 · Mar 7, 2023 · US
Method and apparatus for reducing power-up overstress of capacitor-less regulating circuits
US-2022276666-A1 · Sep 1, 2022 · US
Low dropout regulator
US-2022269296-A1 · Aug 25, 2022 · US
Apparatus for Pole Frequency Tracking in Amplifiers and Associated Methods
US-2021320635-A1 · Oct 14, 2021 · US
Amplifier device
US-10707814-B2 · Jul 7, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H03F2200/151?
- CPC H03F2200/151 is the Cooperative Patent Classification code for “A source follower being used in a feedback circuit of an amplifier stage.”
- How many patents are filed under CPC H03F2200/151 (A source follower being used in a feedback circuit of an amplifier stage)?
- Our database includes 43 publications tagged with this CPC code.
- Is patent activity under CPC H03F2200/151 growing?
- Publication counts under this code: 4 in 2024 vs 8 in 2025 (latest complete years).