H04B 10/50572
To control the modulating signal amplitude including amplitude distortion
Official title: {to control the modulating signal amplitude including amplitude distortion}
H04B10/50572 (To control the modulating signal amplitude including amplitude distortion) appears on 138 US grants and 116 published applications in this corpus.
Search patents in H04B- Granted patents
- 138
- Published applications
- 116
- Assignees
- 87
- Inventors
- 260
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 2 | 2 |
| 2003 | 5 | 10 |
| 2004 | 3 | 3 |
| 2005 | 6 | 5 |
| 2006 | 6 | 7 |
| 2007 | 5 | 5 |
| 2008 | 3 | 5 |
| 2009 | 4 | 6 |
| 2010 | 7 | 3 |
| 2011 | 4 | 3 |
| 2012 | 5 | 3 |
| 2013 | 6 | 4 |
| 2014 | 2 | 6 |
| 2015 | 9 | 5 |
| 2016 | 8 | 10 |
| 2017 | 8 | 6 |
| 2018 | 12 | 8 |
| 2019 | 5 | 2 |
| 2020 | 8 | 5 |
| 2021 | 4 | 3 |
| 2022 | 3 | 3 |
| 2023 | 5 | 5 |
| 2024 | 1 | 5 |
| 2025 | 2 | 0 |
| 2026 | 6 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Optical transmission system, transmission apparatus, receiving apparatus and method for device characteristic estimation19 May 2026US 12,634,015 B2NTT, Inc.
- Optical transmitter that transmits multi-level signal17 Feb 2026US 12,556,284 B2Fujitsu Limited
- Communication device including nested modulator and bias control method for nested modulator10 Feb 2026US 12,549,258 B2NEC Corporation
- Systems and Methods for Distributing Optical Signals Using a Photonic Integrated Circuit14 May 2026US 2026/0135353 A1Quintessent Inc.
- Temperature control device for optical modulators, and optical link device including same26 Mar 2026US 2026/0086306 A1Samsung Electronics Co., Ltd.
- In-phase (i) / quadrature (q) correlation dither for modulator quadrature control5 Dec 2024US 2024/0405880 A1Ciena Corporation
- Optical transmission system, transmission apparatus, receiving apparatus and method for device characteristic estimation22 Aug 2024US 2024/0283544 A1Nippon Telegraph and Telephone Corporation
- Improving classical and quantum free-space communication by adaptive optics and by separating the reference and signal beams with time delay for source(s) moving relative to the detector(s)18 Jul 2024US 2024/0243813 A1The University of Hong Kong
Most cited
By later US patents
- RF processing system and method153US 10,630,391 B1MagiQ Technologies, Inc. · 2020
- Optical transmitters linearized by means of parametric feedback100US 5,161,044 AHarmonic Lightwaves, Inc. · 1992
- Apparatus and method for linearizing an external optical modulator91US 5,321,543 AGeneral Instrument Corporation · 1994
- Adaptive predistortion control for optical external modulation71US 5,850,305 AScientific-Atlanta, Inc. · 1998
- Optical signal transmitter and method for controlling polarization multiplexed optical signal60US 8,472,810 B2Fujitsu Limited · 2013