Apparatus including a bias voltage generator
US-12562687-B2 · Feb 24, 2026 · US
the bias or supply voltage or current of the gate side of a FET amplifier being controlled to be on or off by a switch
the bias or supply voltage or current of the gate side of a FET amplifier being controlled to be on or off by a switch · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H03F2200/522 |
| Official title | the bias or supply voltage or current of the gate side of a FET amplifier being controlled to be on or off by a switch |
| Display label | the bias or supply voltage or current of the gate side of a FET amplifier being controlled to be on or off by a switch |
| Total patents | 48 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 4 |
| 2017 | 2 |
| 2018 | 2 |
| 2019 | 4 |
| 2020 | 8 |
| 2021 | 4 |
| 2022 | 6 |
| 2023 | 4 |
| 2024 | 4 |
| 2025 | 7 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Electronic device comprising power amplifier, and operating method thereof
US-2025247058-A1 · Jul 31, 2025 · US
Amplifier circuit for microphone, microphone circuit and electronic device
US-2025226805-A1 · Jul 10, 2025 · US
Gate drivers for stacked transistor amplifiers
US-2025150035-A1 · May 8, 2025 · US
Gate drivers for stacked transistor amplifiers
US-12255587-B2 · Mar 18, 2025 · US
Power amplifier circuit
US-12244276-B2 · Mar 4, 2025 · US
Amplifier devices having multiple bias networks
US-2025062723-A1 · Feb 20, 2025 · US
Audio amplifier circuit
US-2025015770-A1 · Jan 9, 2025 · US
Power circuit and electronic device
US-2024097630-A1 · Mar 21, 2024 · US
Semiconductor device and method for operating semiconductor device
US-11916065-B2 · Feb 27, 2024 · US
Gate Drivers for Stacked Transistor Amplifiers
US-2024039479-A1 · Feb 1, 2024 · US
Amplifier device
US-11863127-B2 · Jan 2, 2024 · US
Power protection loop for amplifier chain elements
US-2023387867-A1 · Nov 30, 2023 · US
Gate drivers for stacked transistor amplifiers
US-11742802-B2 · Aug 29, 2023 · US
Wideband power amplifier arrangement
US-11652452-B2 · May 16, 2023 · US
Apparatus including a bias voltage generator
US-2023096979-A1 · Mar 30, 2023 · US
Power amplifier circuit
US-2022311394-A1 · Sep 29, 2022 · US
Amplifier device
US-2022173701-A1 · Jun 2, 2022 · US
Gate Drivers for Stacked Transistor Amplifiers
US-2022158589-A1 · May 19, 2022 · US
Semiconductor device and method for operating semiconductor device
US-2022102340-A1 · Mar 31, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H03F2200/522?
- CPC H03F2200/522 is the Cooperative Patent Classification code for “the bias or supply voltage or current of the gate side of a FET amplifier being controlled to be on or off by a switch.”
- How many patents are filed under CPC H03F2200/522 (the bias or supply voltage or current of the gate side of a FET amplifier being controlled to be on or off by a switch)?
- Our database includes 48 publications tagged with this CPC code.
- Is patent activity under CPC H03F2200/522 growing?
- Publication counts under this code: 4 in 2024 vs 7 in 2025 (latest complete years).