Partial-Fractional Phase-locked Loop with Sigma Delta Modulator and Finite Impulse Response Filter
US-2025357935-A1 · Nov 20, 2025 · US
all the frequency changers being connected in cascade
all the frequency changers being connected in cascade · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H03D7/161 |
| Official title | {all the frequency changers being connected in cascade} |
| Display label | all the frequency changers being connected in cascade |
| Total patents | 51 |
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 | 5 |
| 2017 | 4 |
| 2018 | 6 |
| 2019 | 6 |
| 2020 | 4 |
| 2021 | 7 |
| 2022 | 4 |
| 2023 | 6 |
| 2024 | 2 |
| 2025 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Signal processing system and related apparatus
US-2025293907-A1 · Sep 18, 2025 · US
Partial-fractional phase-locked loop with sigma delta modulator and finite impulse response filter
US-12395178-B2 · Aug 19, 2025 · US
Partial-fractional phase-locked loop with sigma delta modulator and finite impulse response filter
US-11955979-B2 · Apr 9, 2024 · US
Sensor interface circuit and sensor module
US-11954555-B2 · Apr 9, 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
Compact, low-power, high image rejection sideband separation receiver
US-2023304945-A2 · Sep 28, 2023 · US
Methods and apparatus for transmitting signals
US-11689226-B2 · Jun 27, 2023 · US
Sensor interface circuit and sensor module
US-2023186040-A1 · Jun 15, 2023 · US
Compact, low-power, high image rejection sideband separation receiver
US-2023168211-A1 · Jun 1, 2023 · US
Methods and apparatus for transmitting signals
US-2022302934-A1 · Sep 22, 2022 · US
Magnetic-free non-reciprocal circuits based on sub-harmonic spatio-temporal conductance modulation
US-11349186-B2 · May 31, 2022 · US
Electronic circuit and electronic apparatus
US-11303266-B2 · Apr 12, 2022 · US
Electronic circuit and electronic apparatus
US-2022069806-A1 · Mar 3, 2022 · US
Circuits and methods for circulators including a plurality of cancellation paths
US-11205826-B2 · Dec 21, 2021 · US
Magnetic-free non-reciprocal circuits based on sub-harmonic spatio-temporal conductance modulation
US-2021384600-A1 · Dec 9, 2021 · US
Circuits and methods for circulators including a plurality of cancellation paths
US-2021242552-A1 · Aug 5, 2021 · US
Local oscillator leakage detecting and cancellation
US-2021242947-A1 · Aug 5, 2021 · US
Magnetic-free non-reciprocal circuits based on sub-harmonic spatio-temporal conductance modulation
US-11031665-B2 · Jun 8, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H03D7/161?
- CPC H03D7/161 is the Cooperative Patent Classification code for “all the frequency changers being connected in cascade.”
- How many patents are filed under CPC H03D7/161 (all the frequency changers being connected in cascade)?
- Our database includes 51 publications tagged with this CPC code.
- Is patent activity under CPC H03D7/161 growing?
- Publication counts under this code: 2 in 2024 vs 3 in 2025 (latest complete years).