Branch-line directional coupler and power amplifier device
US-11133566-B2 · Sep 28, 2021 · US
90° branch line couplers
90° branch line couplers · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H01P5/227 |
| Official title | {90° branch line couplers} |
| Display label | 90° branch line couplers |
| Total patents | 109 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 6 |
| 2016 | 2 |
| 2017 | 5 |
| 2018 | 12 |
| 2019 | 12 |
| 2020 | 21 |
| 2021 | 10 |
| 2022 | 9 |
| 2023 | 7 |
| 2024 | 12 |
| 2025 | 8 |
| 2026 | 5 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Digital power amplifier
US-2021119587-A1 · Apr 22, 2021 · US
Circuits for wireless communication on multiple frequency bands
US-10854945-B2 · Dec 1, 2020 · US
Circuitry
US-2020366001-A1 · Nov 19, 2020 · US
Method and device for calibrating a hybrid coupler
US-2020350653-A1 · Nov 5, 2020 · US
Quasi-circulator using asymmetric directional coupler
US-10777866-B2 · Sep 15, 2020 · US
Broadband single pol TX, dual pol RX, circular polarization waveguide network
US-10763593-B1 · Sep 1, 2020 · US
Branch-line directional coupler and power amplifier device
US-2020266517-A1 · Aug 20, 2020 · US
Iris Matched PCB to Waveguide Transition
US-2020266544-A1 · Aug 20, 2020 · US
Branch-line coupler
US-2020220246-A1 · Jul 9, 2020 · US
OAM pseudo-doppler receiving architecture
US-10707927-B2 · Jul 7, 2020 · US
Iris matched PCB to waveguide transition
US-10693236-B2 · Jun 23, 2020 · US
Doherty power amplifier and device
US-2020195200-A1 · Jun 18, 2020 · US
Systems and methods for phase shifting signals
US-10686236-B2 · Jun 16, 2020 · US
Branch-line coupler
US-2020153075-A1 · May 14, 2020 · US
Branch-line coupler
US-10644375-B1 · May 5, 2020 · US
Oam pseudo-doppler receiving architecture
US-2020127709-A1 · Apr 23, 2020 · US
Directional coupler
US-10622696-B2 · Apr 14, 2020 · US
Branch-line coupler
US-10594291-B2 · Mar 17, 2020 · US
High frequency polymer on metal radiator
US-10581177-B2 · Mar 3, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H01P5/227?
- CPC H01P5/227 is the Cooperative Patent Classification code for “90° branch line couplers.”
- How many patents are filed under CPC H01P5/227 (90° branch line couplers)?
- Our database includes 109 publications tagged with this CPC code.
- Is patent activity under CPC H01P5/227 growing?
- Publication counts under this code: 12 in 2024 vs 8 in 2025 (latest complete years).