H03H 11/18
Two-port phase shifters providing a predetermined phase shift
Official title: Two-port phase shifters providing a predetermined phase shift, e.g. "all-pass" filters
H03H11/18 (Two-port phase shifters providing a predetermined phase shift) appears on 52 US grants and 18 published applications in this corpus.
Search patents in H03H- Granted patents
- 52
- Published applications
- 18
- Assignees
- 42
- Inventors
- 100
- Latest grant
- 11 Feb 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 3 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 4 | 0 |
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 2 | 1 |
| 2003 | 1 | 1 |
| 2004 | 2 | 1 |
| 2005 | 1 | 0 |
| 2006 | 1 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 2 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 3 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 1 |
| 2016 | 2 | 2 |
| 2017 | 1 | 2 |
| 2018 | 2 | 0 |
| 2019 | 0 | 1 |
| 2020 | 1 | 2 |
| 2021 | 2 | 1 |
| 2022 | 0 | 0 |
| 2023 | 0 | 1 |
| 2024 | 0 | 0 |
| 2025 | 1 | 2 |
By publication year. Applications have been published since 2001.
Recent patents
- Phase shifter for linearly shifting phase of input signal based on phase control signals11 Feb 2025US 12,224,728 B2Electronics and Telecommunications Research Institute
- High linearity RF circuit and method for improving linearity thereof12 Oct 2021US 11,146,248 B1Chengdu Sicore Semiconductor Corp. Ltd.
- Second-order all-pass network comprising CCIIs2 Feb 2021US 10,911,025 B2University of Pretoria
- Vector sum circuit and phase controller using the same19 May 2020US 10,659,021 B2Korea Advanced Institute of Science and Technology
- Control apparatus2 Oct 2018US 10,090,846 B2Renesas Electronics Corporation
- Apparatuses, systems and methods for faciliating a phase shifter12 Jun 2025US 2025/0192408 A1NXP USA, Inc.
- Filter circuitry and circuitry comprising the same20 Mar 2025US 2025/0096779 A1Socionext Inc.
- Phase shifter for linearly shifting phase of input signal based on phase control signals5 Oct 2023US 2023/0318577 A1Electronics and Telecommunications Research Institute
- High linearity rf circuit and method for improving linearity thereof14 Oct 2021US 2021/0320645 A1Chengdu Sicore Semiconductor Corp. Ltd.
- A Second-Order All-pass Network Comprising CCIIS24 Sep 2020US 2020/0304105 A1University of Pretoria
Most cited
By later US patents
- RC/CR automatic quadrature network40US 5,644,260 AHewlett-Packard Company · 1997
- Phase quadrature signal generator having a variable phase shift network37US 5,983,082 AMotorola, Inc. · 1999
- Active low-pass filter36US 5,489,873 AMotorola, Inc. · 1996
- Wideband IQ modulator with RC/CR automatic quadrature network36US 5,694,093 AHewlett-Packard Company · 1997
- At frequency phase shifting circuit for use in a quadrature clock generator25US 5,808,498 ARambus Inc. · 1998