Compound semiconductor amplifier and circuit module
US-2026045920-A1 · Feb 12, 2026 · US
in junction-FET amplifiers (H03F1/303, H03F1/305, H03F1/309 take precedence)
in junction-FET amplifiers (H03F1/303, H03F1/305, H03F1/309 take precedence) · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H03F1/306 |
| Official title | {in junction-FET amplifiers (H03F1/303, H03F1/305, H03F1/309 take precedence)} |
| Display label | in junction-FET amplifiers (H03F1/303, H03F1/305, H03F1/309 take precedence) |
| Total patents | 31 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2017 | 3 |
| 2018 | 3 |
| 2019 | 4 |
| 2020 | 4 |
| 2021 | 6 |
| 2022 | 2 |
| 2023 | 3 |
| 2024 | 2 |
| 2025 | 2 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Circuit for removing offset output voltage, and electronic device comprising same
US-12525938-B2 · Jan 13, 2026 · US
Amplifying circuit
US-2025364449-A1 · Nov 27, 2025 · US
Signal processing device and image display apparatus including the same
US-12224719-B2 · Feb 11, 2025 · US
Methods and apparatus for voltage buffering
US-12126309-B2 · Oct 22, 2024 · US
Circuit for removing offset output voltage, and electronic device comprising same
US-2024039496-A1 · Feb 1, 2024 · US
Thermal temperature sensors for power amplifiers
US-11791775-B2 · Oct 17, 2023 · US
Signal processing device and image display apparatus including the same
US-2023283246-A1 · Sep 7, 2023 · US
Thermal temperature sensors for power amplifiers
US-2023006610-A1 · Jan 5, 2023 · US
Operational amplifier
US-11316480-B2 · Apr 26, 2022 · US
Thermal temperature sensors for power amplifiers
US-11264954-B2 · Mar 1, 2022 · US
Compensation for device property variation according to wafer location
US-11128293-B1 · Sep 21, 2021 · US
Power amplifier system
US-11038472-B2 · Jun 15, 2021 · US
Phase shifters for gallium nitride amplifiers and related methods
US-11038473-B2 · Jun 15, 2021 · US
Thermal temperature sensors for power amplifiers
US-2021152131-A1 · May 20, 2021 · US
Radio frequency power amplifier and power amplifier module
US-10972060-B2 · Apr 6, 2021 · US
Operational Amplifier
US-2021067101-A1 · Mar 4, 2021 · US
Power amplifier system
US-2020373888-A1 · Nov 26, 2020 · US
Radio frequency power amplifier and power amplifier module
US-2020091874-A1 · Mar 19, 2020 · US
Methods and apparatus for voltage buffering
US-2020076374-A1 · Mar 5, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H03F1/306?
- CPC H03F1/306 is the Cooperative Patent Classification code for “in junction-FET amplifiers (H03F1/303, H03F1/305, H03F1/309 take precedence).”
- How many patents are filed under CPC H03F1/306 (in junction-FET amplifiers (H03F1/303, H03F1/305, H03F1/309 take precedence))?
- Our database includes 31 publications tagged with this CPC code.
- Is patent activity under CPC H03F1/306 growing?
- Publication counts under this code: 2 in 2024 vs 2 in 2025 (latest complete years).