H01P 5/225
180° reversed phase hybrid rings
Official title: {180° reversed phase hybrid rings}
H01P5/225 (180° reversed phase hybrid rings) appears on 8 US grants and 4 published applications in this corpus.
Search patents in H01P- Granted patents
- 8
- Published applications
- 4
- Assignees
- 8
- Inventors
- 15
- Latest grant
- 2 Jan 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 1 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 1 |
| 2021 | 1 | 1 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Communication device2 Jan 2024US 11,862,862 B2NEC Corporation
- Hybrid coupler with sum and difference ports located on the same side6 Jul 2021US 11,056,759 B2Viettel Group
- Non-radiative dielectric waveguide mixer using a ring hybrid coupler22 Mar 2005US 6,871,056 B2NRD Co., Ltd.
- 180.degree. hybrid tee7 Jun 1988US 4,749,969 AWestinghouse Electric Corp.
- Slotline reverse-phased hybrid ring coupler6 Dec 1983US 4,419,635 AThe United States of America as represented by the Secretary of the Navy
- Communication device4 Nov 2021US 2021/0344124 A1NEC Corporation
- Hybrid coupler with sum and difference ports located on the same side4 Jun 2020US 2020/0176849 A1Viettel Group
- Electrical Coupler and Communication Apparatus Comprising Such an Electrical Coupler16 Jun 2011US 2011/0140802 A1STMicroelectronics S.r.l.
- Non-radiative dielectric waveguide mixer using a ring hybrid coupler19 Sep 2002US 2002/0132601 A1NRD Co., Ltd.
Most cited
By later US patents
- Coupler having arbitrary impedance transformation ratio and arbitrary coubling ratio31US 4,305,043 AFord Aerospace & Communications Corporation · 1981
- 180.degree. hybrid tee9US 4,749,969 AWestinghouse Electric Corp. · 1988
- Microstrip reverse-phased hybrid ring coupler7US 4,023,123 AThe United States of America as represented by the Secretary of the Navy · 1977
- Microstrip hybrid ring coupler6US 4,093,928 AThe United States of America as represented by the Secretary of the Navy · 1978
- Slotline reverse-phased hybrid ring coupler6US 4,419,635 AThe United States of America as represented by the Secretary of the Navy · 1983