Switched capacitor transmitter circuits and methods
US-9531409-B2 · Dec 27, 2016 · US
using switched capacitors, e.g. dynamic amplifiers; using switched capacitors as resistors in differential amplifiers (H03F3/45 takes precedence)
using switched capacitors, e.g. dynamic amplifiers; using switched capacitors as resistors in differential amplifiers (H03F3/45 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 | H03F3/005 |
| Official title | {using switched capacitors, e.g. dynamic amplifiers; using switched capacitors as resistors in differential amplifiers (H03F3/45 takes precedence)} |
| Display label | using switched capacitors, e.g. dynamic amplifiers; using switched capacitors as resistors in differential amplifiers (H03F3/45 takes precedence) |
| Total patents | 429 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 31 |
| 2016 | 29 |
| 2017 | 36 |
| 2018 | 38 |
| 2019 | 43 |
| 2020 | 47 |
| 2021 | 45 |
| 2022 | 44 |
| 2023 | 35 |
| 2024 | 35 |
| 2025 | 38 |
| 2026 | 8 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Apparatus and methods for a capacitive digital-to-analog converter based power amplifier
US-9525383-B2 · Dec 20, 2016 · US
Switched capacitor transmitter circuits and methods
US-9520906-B2 · Dec 13, 2016 · US
Switched capacitor power amplifier circuits and methods
US-2016336909-A1 · Nov 17, 2016 · US
Semiconductor integrated circuit device
US-9484870-B2 · Nov 1, 2016 · US
Power amplification apparatus and control method
US-9479127-B2 · Oct 25, 2016 · US
Signal processing circuit, resolver digital converter, and multipath nested mirror amplifier
US-9473088-B2 · Oct 18, 2016 · US
Multi-band power amplifier
US-2016294333-A1 · Oct 6, 2016 · US
Semiconductor integrated circuit device
US-2016276989-A1 · Sep 22, 2016 · US
Current sense circuit using a single opamp having DC offset auto-zeroing
US-9444414-B2 · Sep 13, 2016 · US
Wireless communication system with power amplifier mechanism and method of operation thereof
US-9425758-B2 · Aug 23, 2016 · US
Spurious signal mitigation for carrier aggregation amplifier
US-9425746-B2 · Aug 23, 2016 · US
Variable matching circuit and amplifier
US-9407222-B2 · Aug 2, 2016 · US
Transmission device and distortion compensation method
US-9401778-B2 · Jul 26, 2016 · US
Driver circuit and associated power amplifier assembly, radio base station and method
US-2016211812-A1 · Jul 21, 2016 · US
Multi-stage switched-capacitor DC blocking circuit for audio frontend
US-9391569-B2 · Jul 12, 2016 · US
Expanded range DC-DC converter
US-9374005-B2 · Jun 21, 2016 · US
Passive amplification circuit and analog-digital convertor
US-2016173115-A1 · Jun 16, 2016 · US
Switched capacitor circuit and drive method thereof
US-9368231-B2 · Jun 14, 2016 · US
Reduced bandwith of signal in an envelope path for envelope tracking system
US-9350302-B2 · May 24, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H03F3/005?
- CPC H03F3/005 is the Cooperative Patent Classification code for “using switched capacitors, e.g. dynamic amplifiers; using switched capacitors as resistors in differential amplifiers (H03F3/45 takes precedence).”
- How many patents are filed under CPC H03F3/005 (using switched capacitors, e.g. dynamic amplifiers; using switched capacitors as resistors in differential amplifiers (H03F3/45 takes precedence))?
- Our database includes 429 publications tagged with this CPC code.
- Is patent activity under CPC H03F3/005 growing?
- Publication counts under this code: 35 in 2024 vs 38 in 2025 (latest complete years).