Biasing an amplifier using a mirror bias signal
US-2020259472-A1 · Aug 13, 2020 · US
Amplifiers in which input is applied to, or output is derived from, an impedance common to input and output circuits of the amplifying element, e.g. cathode follower
Amplifiers in which input is applied to, or output is derived from, an impedance common to input and output circuits of the amplifying element, e.g. cathode follower · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H03F3/50 |
| Official title | Amplifiers in which input is applied to, or output is derived from, an impedance common to input and output circuits of the amplifying element, e.g. cathode follower |
| Display label | Amplifiers in which input is applied to, or output is derived from, an impedance common to input and output circuits of the amplifying element, e.g. cathode follower |
| Total patents | 113 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 11 |
| 2017 | 4 |
| 2018 | 21 |
| 2019 | 11 |
| 2020 | 10 |
| 2021 | 15 |
| 2022 | 7 |
| 2023 | 6 |
| 2024 | 14 |
| 2025 | 8 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Methods and apparatuses for threshold voltage measurement and related semiconductor devices and systems
US-2020200816-A1 · Jun 25, 2020 · US
Differential amplifier circuit having stable gain
US-2020177143-A1 · Jun 4, 2020 · US
Digital amplifier and output device
US-2020153396-A1 · May 14, 2020 · US
Voltage buffer for input voltages above a supply voltage or below ground voltage
US-10644659-B2 · May 5, 2020 · US
Receiving circuits and methods for increasing bandwidth
US-2020119956-A1 · Apr 16, 2020 · US
Unity gain buffer with two states
US-10620299-B2 · Apr 14, 2020 · US
Systems for generating process, voltage, temperature (PVT)-independent current for a low voltage domain
US-10613572-B1 · Apr 7, 2020 · US
Methods and apparatus for voltage buffering
US-2020076374-A1 · Mar 5, 2020 · US
Power amplifier bias circuit with a mirror device to provide a mirror bias signal
US-10511272-B2 · Dec 17, 2019 · US
Isolation amplifier
US-2019331527-A1 · Oct 31, 2019 · US
Chopper-stabilized amplifier with analog-driven level shifter
US-10411664-B2 · Sep 10, 2019 · US
Chopper-stabilized amplifier with analog-driven level shifter
US-2019207573-A1 · Jul 4, 2019 · US
Amplifier
US-10326416-B2 · Jun 18, 2019 · US
Multi-stage trans-impedance amplifier (tia) for an ultrasound device
US-2019142389-A1 · May 16, 2019 · US
Individual DC and AC current shunting in optical receivers
US-10270538-B2 · Apr 23, 2019 · US
Amplifier circuit
US-10263567-B2 · Apr 16, 2019 · US
Audio amplifier and audio power amplifier
US-10243516-B2 · Mar 26, 2019 · US
Ultra-broadband transimpedance amplifiers (tia) for optical fiber communications
US-10243523-B2 · Mar 26, 2019 · US
Bidirectional amplifier
US-10211797-B2 · Feb 19, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H03F3/50?
- CPC H03F3/50 is the Cooperative Patent Classification code for “Amplifiers in which input is applied to, or output is derived from, an impedance common to input and output circuits of the amplifying element, e.g. cathode follower.”
- How many patents are filed under CPC H03F3/50 (Amplifiers in which input is applied to, or output is derived from, an impedance common to input and output circuits of the amplifying element, e.g. cathode follower)?
- Our database includes 113 publications tagged with this CPC code.
- Is patent activity under CPC H03F3/50 growing?
- Publication counts under this code: 14 in 2024 vs 8 in 2025 (latest complete years).