Broadband circuit for an active device
US-9531334-B1 · Dec 27, 2016 · US
Modifications of amplifiers to extend the bandwidth
Modifications of amplifiers to extend the bandwidth · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H03F1/42 |
| Official title | Modifications of amplifiers to extend the bandwidth |
| Display label | Modifications of amplifiers to extend the bandwidth |
| Total patents | 614 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 34 |
| 2016 | 56 |
| 2017 | 57 |
| 2018 | 46 |
| 2019 | 40 |
| 2020 | 47 |
| 2021 | 56 |
| 2022 | 80 |
| 2023 | 65 |
| 2024 | 65 |
| 2025 | 52 |
| 2026 | 16 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Power amplifier and power amplification method
US-9531327-B2 · Dec 27, 2016 · US
Power amplifier module
US-2016373069-A1 · Dec 22, 2016 · US
Voltage regulator with improved electrical properties and corresponding control method
US-2016349776-A1 · Dec 1, 2016 · US
Peaking inductor array for peaking control unit of transceiver
US-9509281-B1 · Nov 29, 2016 · US
Wideband low-power amplifier
US-9484867-B2 · Nov 1, 2016 · US
Tunable power amplifier with wide frequency range
US-9473078-B2 · Oct 18, 2016 · US
Broadband amplifier
US-2016294325-A1 · Oct 6, 2016 · US
Active load circuit and semiconductor integrated circuit
US-2016268977-A1 · Sep 15, 2016 · US
Broadband amplifier topology with current shutdown
US-9444416-B1 · Sep 13, 2016 · US
A doherty amplifier with additional delay element
US-2016254792-A1 · Sep 1, 2016 · US
Pseudo-envelope following feedback delay compensation
US-9431974-B2 · Aug 30, 2016 · US
Reconfigurable power amplifier capable of selecting wide band frequency and method for selecting wide band frequency
US-2016233838-A1 · Aug 11, 2016 · US
Implementing enhanced cmos inverter based optical transimpedence amplifer
US-2016226456-A1 · Aug 4, 2016 · US
Implementing enhanced cmos inverter based optical transimpedence amplifer
US-2016226458-A1 · Aug 4, 2016 · US
Method And System for Accurate Gain Adjustment Of A Transimpedance Amplifier Using A Dual Replica And Servo Loop
US-2016211818-A1 · Jul 21, 2016 · US
Doherty amplifier
US-2016204747-A1 · Jul 14, 2016 · US
High bandwidth amplifier
US-2016164475-A1 · Jun 9, 2016 · US
Power supply circuits
US-9354653-B2 · May 31, 2016 · US
Operational amplifier based circuit with compensation circuit block used for stability compensation
US-2016142016-A1 · May 19, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H03F1/42?
- CPC H03F1/42 is the Cooperative Patent Classification code for “Modifications of amplifiers to extend the bandwidth.”
- How many patents are filed under CPC H03F1/42 (Modifications of amplifiers to extend the bandwidth)?
- Our database includes 614 publications tagged with this CPC code.
- Is patent activity under CPC H03F1/42 growing?
- Publication counts under this code: 65 in 2024 vs 52 in 2025 (latest complete years).