Channel bonding using k-muxing and multiple-beam antenna
US-2017366982-A1 · Dec 21, 2017 · US
varying the amplitude
varying the amplitude · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H01Q3/28 |
| Official title | varying the amplitude |
| Display label | varying the amplitude |
| Total patents | 677 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 20 |
| 2016 | 19 |
| 2017 | 43 |
| 2018 | 68 |
| 2019 | 83 |
| 2020 | 92 |
| 2021 | 94 |
| 2022 | 57 |
| 2023 | 76 |
| 2024 | 55 |
| 2025 | 51 |
| 2026 | 19 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Systems and methods for high power microwave combining and switching
US-9831549-B2 · Nov 28, 2017 · US
Dual-beam sector antenna and array
US-9831548-B2 · Nov 28, 2017 · US
System, method and computer-accessible medium for compliance assessment and active power management for safe use of radiowave emitting devices
US-2017338550-A1 · Nov 23, 2017 · US
Method to assemble aperture segments of a cylindrical feed antenna
US-2017331186-A1 · Nov 16, 2017 · US
Wireless power transmission device and control method thereof
US-2017331332-A1 · Nov 16, 2017 · US
Wireless power transmitter and control method therefor
US-2017331330-A1 · Nov 16, 2017 · US
Phased Array Antenna Calibration
US-2017310004-A1 · Oct 26, 2017 · US
Antenna array structures
US-2017264014-A1 · Sep 14, 2017 · US
Fragmented aperture for the Ka/K/Ku frequency bands
US-9761937-B2 · Sep 12, 2017 · US
Test apparatus and a method of testing of an antenna
US-2017242061-A1 · Aug 24, 2017 · US
Dynamic phased array tapering without phase recalibration
US-2017194707-A1 · Jul 6, 2017 · US
Beam broadening with large spoil factors
US-9620856-B2 · Apr 11, 2017 · US
System and method for generating wireless electromagnetic transmissions modulated with software defined complex waveforms
US-9602143-B1 · Mar 21, 2017 · US
Transceiver element for an active, electronically controlled antenna system
US-9602155-B2 · Mar 21, 2017 · US
Hybrid phased array transmission
US-2017077616-A1 · Mar 16, 2017 · US
Phased array calibration method and phased array calibration circuit
US-2017077611-A1 · Mar 16, 2017 · US
Wireless power transfer using tunable metamaterial systems and methods
US-2017069973-A1 · Mar 9, 2017 · US
Systems, methods and devices for mechanically producing patterns of electromagnetic energy
US-2017062923-A1 · Mar 2, 2017 · US
Signal processing
US-9559417-B1 · Jan 31, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H01Q3/28?
- CPC H01Q3/28 is the Cooperative Patent Classification code for “varying the amplitude.”
- How many patents are filed under CPC H01Q3/28 (varying the amplitude)?
- Our database includes 677 publications tagged with this CPC code.
- Is patent activity under CPC H01Q3/28 growing?
- Publication counts under this code: 55 in 2024 vs 51 in 2025 (latest complete years).