Isolation circuits for digital communications and methods to provide isolation for digital communications
US-2015381219-A1 · Dec 31, 2015 · US
with means for improving efficiency
with means for improving efficiency · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H04B2001/045 |
| Official title | {with means for improving efficiency} |
| Display label | with means for improving efficiency |
| Total patents | 593 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 81 |
| 2016 | 51 |
| 2017 | 64 |
| 2018 | 59 |
| 2019 | 46 |
| 2020 | 61 |
| 2021 | 49 |
| 2022 | 61 |
| 2023 | 43 |
| 2024 | 37 |
| 2025 | 28 |
| 2026 | 13 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Adaptive High-Order Nonlinear Function Approximation Using Time-Domain Volterra Series to Provide Flexible High Performance Digital Pre-Distortion
US-2015381216-A1 · Dec 31, 2015 · US
Switched capacitor transmitter circuits and methods
US-2015381215-A1 · Dec 31, 2015 · US
Apparatus and Method For Digital Beam-Forming With Low-Resolution Quantization
US-2015365151-A1 · Dec 17, 2015 · US
Adaptive transmitter efficiency optimization
US-2015358038-A1 · Dec 10, 2015 · US
Linear row array integrated power combiner for RF power amplifiers
US-9208943-B2 · Dec 8, 2015 · US
Transmitter with class E amplifier
US-9203460-B2 · Dec 1, 2015 · US
Detection calibration circuit and transmission apparatus
US-2015338495-A1 · Nov 26, 2015 · US
Low power, low out-of-band harmonic content radio
US-2015333778-A1 · Nov 19, 2015 · US
Radio frequency power amplifier circuit
US-2015333706-A1 · Nov 19, 2015 · US
Signal converting device and digital transmitting apparatus applying the signal converting device
US-9191004-B2 · Nov 17, 2015 · US
Pilot tone for amplifier bias point
US-9191064-B2 · Nov 17, 2015 · US
Apparatus and methods for envelope trackers
US-2015326184-A1 · Nov 12, 2015 · US
Modulator device
US-9172494-B2 · Oct 27, 2015 · US
Digital predistortion system and method with extended correction bandwidth
US-9172334-B2 · Oct 27, 2015 · US
RF signal generation circuit and wireless transmitter
US-9166539-B2 · Oct 20, 2015 · US
Power supply device, method for managing power supply thereof and wireless communication terminal
US-9166478-B2 · Oct 20, 2015 · US
Transmitter and transmitting method
US-9160379-B2 · Oct 13, 2015 · US
SPS receiver with adjustable linearity
US-9154088-B2 · Oct 6, 2015 · US
Adaptive digital pre-distortion
US-2015280657-A1 · Oct 1, 2015 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H04B2001/045?
- CPC H04B2001/045 is the Cooperative Patent Classification code for “with means for improving efficiency.”
- How many patents are filed under CPC H04B2001/045 (with means for improving efficiency)?
- Our database includes 593 publications tagged with this CPC code.
- Is patent activity under CPC H04B2001/045 growing?
- Publication counts under this code: 37 in 2024 vs 28 in 2025 (latest complete years).