Partial-Fractional Phase-locked Loop with Sigma Delta Modulator and Finite Impulse Response Filter
US-2025357935-A1 · Nov 20, 2025 · US
using fractional frequency division in the feedback loop of the phase locked loop
using fractional frequency division in the feedback loop of the phase locked loop · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H03C3/0933 |
| Official title | {using fractional frequency division in the feedback loop of the phase locked loop} |
| Display label | using fractional frequency division in the feedback loop of the phase locked loop |
| Total patents | 55 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 8 |
| 2017 | 5 |
| 2018 | 7 |
| 2019 | 6 |
| 2020 | 10 |
| 2021 | 3 |
| 2022 | 5 |
| 2023 | 3 |
| 2024 | 3 |
| 2025 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Partial-fractional phase-locked loop with sigma delta modulator and finite impulse response filter
US-12395178-B2 · Aug 19, 2025 · US
Type-I PLLs for phase-controlled applications
US-12231136-B2 · Feb 18, 2025 · US
Partial-fractional phase-locked loop with sigma delta modulator and finite impulse response filter
US-11955979-B2 · Apr 9, 2024 · US
Hybrid fractional-n sampling phase locked loop (pll) with accurate digital-to-time converter (dtc) calibration
US-2024056085-A1 · Feb 15, 2024 · US
Hybrid fractional-N sampling phase locked loop (PLL) with accurate digital-to-time converter (DTC) calibration
US-11901906-B1 · Feb 13, 2024 · US
Partial-Fractional Phase-locked Loop with Sigma Delta Modulator and Finite Impulse Response Filter
US-2023403014-A1 · Dec 14, 2023 · US
Partial-Fractional Phase-locked Loop with Sigma Delta Modulator and Finite Impulse Response Filter
US-2023403013-A1 · Dec 14, 2023 · US
Frequency modulation system based on phase-locked loop capable of performing fast modulation independent of bandwidth and method of the same
US-11632117-B2 · Apr 18, 2023 · US
Type-i plls for phase-controlled applications
US-2022311446-A1 · Sep 29, 2022 · US
Synchronization of receiver and transmitter local oscillators for ranging applications
US-11444627-B1 · Sep 13, 2022 · US
Accelerated channel scanning with a two-point-modulated phase-locked loop
US-11437957-B2 · Sep 6, 2022 · US
Accelerated channel scanning with a two-point-modulated phase-locked loop
US-2022247355-A1 · Aug 4, 2022 · US
Frequency modulation system based on phase-locked loop capable of performing fast modulation independent of bandwidth and method of the same
US-2022131546-A1 · Apr 28, 2022 · US
Phase modulator having fractional sample interval timing skew for frequency control input
US-11095296-B2 · Aug 17, 2021 · US
Wideband multiphase transmitter with two-point modulation
US-11075784-B1 · Jul 27, 2021 · US
Method and apparatus for calibration of voltage controlled oscillator
US-11043953-B2 · Jun 22, 2021 · US
Fractional divider for modulated phase-lock loop circuits
US-10879916-B1 · Dec 29, 2020 · US
Advanced multi-gain calibration for direct modulation synthesizer
US-10862427-B1 · Dec 8, 2020 · US
Method and Apparatus for Calibration of Voltage Controlled Oscillator
US-2020366297-A1 · Nov 19, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H03C3/0933?
- CPC H03C3/0933 is the Cooperative Patent Classification code for “using fractional frequency division in the feedback loop of the phase locked loop.”
- How many patents are filed under CPC H03C3/0933 (using fractional frequency division in the feedback loop of the phase locked loop)?
- Our database includes 55 publications tagged with this CPC code.
- Is patent activity under CPC H03C3/0933 growing?
- Publication counts under this code: 3 in 2024 vs 3 in 2025 (latest complete years).