Envelope tracking current bias circuit and power amplifying device
US-10476441-B2 · Nov 12, 2019 · US
with field-effect devices (H03F3/347 takes precedence)
with field-effect devices (H03F3/347 takes 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 | H03F3/345 |
| Official title | with field-effect devices (H03F3/347 takes precedence) |
| Display label | with field-effect devices (H03F3/347 takes precedence) |
| Total patents | 202 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 8 |
| 2016 | 13 |
| 2017 | 5 |
| 2018 | 23 |
| 2019 | 32 |
| 2020 | 22 |
| 2021 | 23 |
| 2022 | 24 |
| 2023 | 17 |
| 2024 | 12 |
| 2025 | 21 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Source follower
US-10476447-B2 · Nov 12, 2019 · US
Continuous time linear equalizer
US-2019342128-A1 · Nov 7, 2019 · US
Amplifier having a switchable current bias circuit
US-10447208-B2 · Oct 15, 2019 · US
Offset drift compensation
US-2019296695-A1 · Sep 26, 2019 · US
Voltage detector and communication circuit including voltage detector
US-2019199459-A1 · Jun 27, 2019 · US
Amplifier having a switchable current bias circuit
US-2019190456-A1 · Jun 20, 2019 · US
Voltage regulators
US-10324481-B2 · Jun 18, 2019 · US
Cascode common source transimpedance amplifiers for analyte monitoring systems
US-2019123691-A1 · Apr 25, 2019 · US
Envelope tracking current bias circuit and power amplifying device
US-2019115872-A1 · Apr 18, 2019 · US
Power supplying apparatus for neural activity recorder reducing common-mode signal applied to electrodes connected to the neural activity recorder
US-10263580-B2 · Apr 16, 2019 · US
Current Mirror Circuit and Driving Method of the Current Mirror Circuit
US-2018364751-A1 · Dec 20, 2018 · US
Single-ended trans-impedance amplifier (tia) for ultrasound device
US-2018367110-A1 · Dec 20, 2018 · US
Integrated circuit with an amplifier MOSFET
US-10156864-B2 · Dec 18, 2018 · US
Amplifier
US-2018358940-A1 · Dec 13, 2018 · US
Transconductor circuit for a fourth order PLL
US-10153774-B1 · Dec 11, 2018 · US
Source follower
US-10141897-B2 · Nov 27, 2018 · US
Power supply with low variation of total radiated power
US-2018299915-A1 · Oct 18, 2018 · US
Differential current conveyor circuit, corresponding device, and method of operation thereof
US-2018284939-A1 · Oct 4, 2018 · US
Amplifier
US-2018278220-A1 · Sep 27, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H03F3/345?
- CPC H03F3/345 is the Cooperative Patent Classification code for “with field-effect devices (H03F3/347 takes precedence).”
- How many patents are filed under CPC H03F3/345 (with field-effect devices (H03F3/347 takes precedence))?
- Our database includes 202 publications tagged with this CPC code.
- Is patent activity under CPC H03F3/345 growing?
- Publication counts under this code: 12 in 2024 vs 21 in 2025 (latest complete years).