Variable Gain Amplifier
US-2020382087-A1 · Dec 3, 2020 · US
Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements (wide-band amplifiers with inter-stage coupling networks incorporating these impedances H03F1/42)
Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements (wide-band amplifiers with inter-stage coupling networks incorporating these impedances H03F1/42) · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H03F1/08 |
| Official title | Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements (wide-band amplifiers with inter-stage coupling networks incorporating these impedances H03F1/42) |
| Display label | Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements (wide-band amplifiers with inter-stage coupling networks incorporating these impedances H03F1/42) |
| Total patents | 145 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 9 |
| 2017 | 11 |
| 2018 | 11 |
| 2019 | 17 |
| 2020 | 21 |
| 2021 | 21 |
| 2022 | 14 |
| 2023 | 13 |
| 2024 | 11 |
| 2025 | 9 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Apparatus and methods for low noise amplifiers with mid-node impedance networks
US-2020366256-A1 · Nov 19, 2020 · US
High signal-to-noise ratio amplifier with multiple output modes
US-2020358400-A1 · Nov 12, 2020 · US
Operational amplifier
US-2020358410-A1 · Nov 12, 2020 · US
Amplifier
US-10804857-B2 · Oct 13, 2020 · US
Semiconductor device
US-10777550-B2 · Sep 15, 2020 · US
Broadband, high-efficiency, non-modulating power amplifier architecture
US-2020212847-A1 · Jul 2, 2020 · US
Amplifier
US-2019393841-A1 · Dec 26, 2019 · US
Multiband receivers for millimeter wave devices
US-2019312603-A1 · Oct 10, 2019 · US
Semiconductor device
US-2019296010-A1 · Sep 26, 2019 · US
High dynamic range analog front-end receiver for long range lidar
US-2019293799-A1 · Sep 26, 2019 · US
High dynamic range analog front-end receiver for long range LIDAR
US-10338224-B2 · Jul 2, 2019 · US
Power amplifier with improved linearity
US-10333479-B2 · Jun 25, 2019 · US
Amplifier module and control method thereof
US-10327087-B2 · Jun 18, 2019 · US
Split cascode circuits and related communication receiver architectures
US-10312873-B2 · Jun 4, 2019 · US
Amplifier
US-2019148315-A1 · May 16, 2019 · US
Variable gain amplifier utilizing positive feedback and time-domain calibration
US-10284145-B2 · May 7, 2019 · US
Apparatus and methods for low noise amplifiers with mid-node impedance networks
US-2019097591-A1 · Mar 28, 2019 · US
Differential split-electrode feedthrough cancellation mechanism
US-10236858-B1 · Mar 19, 2019 · US
Transadmittance amplifier
US-10236840-B1 · Mar 19, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H03F1/08?
- CPC H03F1/08 is the Cooperative Patent Classification code for “Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements (wide-band amplifiers with inter-stage coupling networks incorporating these impedances H03F1/42).”
- How many patents are filed under CPC H03F1/08 (Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements (wide-band amplifiers with inter-stage coupling networks incorporating these impedances H03F1/42))?
- Our database includes 145 publications tagged with this CPC code.
- Is patent activity under CPC H03F1/08 growing?
- Publication counts under this code: 11 in 2024 vs 9 in 2025 (latest complete years).