H03C 3/38
Angle modulation: by converting amplitude modulation to angle modulation
Official title: by converting amplitude modulation to angle modulation
H03C3/38 (Angle modulation: by converting amplitude modulation to angle modulation) appears on 347 US grants and 245 published applications in this corpus.
Search patents in H03C- Granted patents
- 347
- Published applications
- 245
- Assignees
- 195
- Inventors
- 622
- Latest grant
- 26 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 4 | 0 |
| 1990 | 3 | 0 |
| 1991 | 2 | 0 |
| 1992 | 5 | 0 |
| 1993 | 3 | 0 |
| 1994 | 6 | 0 |
| 1995 | 14 | 0 |
| 1996 | 3 | 0 |
| 1997 | 4 | 0 |
| 1998 | 11 | 0 |
| 1999 | 12 | 0 |
| 2000 | 11 | 0 |
| 2001 | 10 | 3 |
| 2002 | 12 | 18 |
| 2003 | 19 | 23 |
| 2004 | 15 | 29 |
| 2005 | 13 | 35 |
| 2006 | 27 | 18 |
| 2007 | 20 | 29 |
| 2008 | 29 | 11 |
| 2009 | 17 | 19 |
| 2010 | 19 | 9 |
| 2011 | 19 | 6 |
| 2012 | 12 | 6 |
| 2013 | 10 | 6 |
| 2014 | 5 | 8 |
| 2015 | 9 | 5 |
| 2016 | 5 | 1 |
| 2017 | 2 | 2 |
| 2018 | 2 | 6 |
| 2019 | 8 | 3 |
| 2020 | 2 | 3 |
| 2021 | 0 | 0 |
| 2022 | 1 | 2 |
| 2023 | 4 | 2 |
| 2024 | 0 | 1 |
| 2025 | 1 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Calibration circuit and method, phase-shift circuit, radio-frequency transceiver circuit, radar and device26 May 2026US 12,638,547 B2Calterah Semiconductor Technology (Shanghai) Co., Ltd.
- In-phase/quadrature-phase generating device and phase shift device using the same6 May 2025US 12,294,334 B2Electronics and Telecommunications Research Institute
- Device and method for receiving and demodulating an amplitude-modulated RF signal26 Dec 2023US 11,855,585 B2Commissariat A L' Energie Atomique Et Aux Energies Alternatives
- Low power wideband multitone generator3 Oct 2023US 11,774,478 B2International Business Machines Corporation
- Communication chip21 Feb 2023US 11,588,612 B2Realtek Semiconductor Corp.
- Calibration circuit and method, phase-shift circuit, radio-frequency transceiver circuit, radar and device30 May 2024US 2024/0175980 A1Calterah Semiconductor Technology (Shanghai) Co., Ltd.
- In-phase/quadrature-phase generating device and phase shift device using the same2 Nov 2023US 2023/0353094 A1Electronics and Telecommunications Research Institute
- Low power wideband multitone generator23 Feb 2023US 2023/0054999 A1International Business Machines Corporation
- Communication chip11 Aug 2022US 2022/0255717 A1Realtek Semiconductor Corp.
- Device and method for receiving and demodulating an amplitude-modulated rf signal20 Jan 2022US 2022/0021339 A1Commissariat A L' Energie Atomique Et Aux Energies Alternatives
Most cited
By later US patents
- Serial communication protocol for medical device579US 9,226,766 B2Ethicon Endo-Surgery, Inc. · 2016
- Digital radio frequency receiver350US 4,893,316 AMotorola, Inc. · 1990
- Linear transmitter using predistortion283US 5,732,333 AGlenayre Electronics, Inc. · 1998
- Linearized power amplifier177US 5,420,536 AVictoria University of Technology · 1995
- Radio apparatus177US 6,091,941 AFujitsu Limited · 2000