H01P 5/222
180° rat race hybrid rings
Official title: {180° rat race hybrid rings}
H01P5/222 (180° rat race hybrid rings) appears on 67 US grants and 62 published applications in this corpus.
Search patents in H01P- Granted patents
- 67
- Published applications
- 62
- Assignees
- 65
- Inventors
- 149
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 1 |
| 2003 | 1 | 3 |
| 2004 | 1 | 0 |
| 2005 | 2 | 0 |
| 2006 | 0 | 2 |
| 2007 | 1 | 2 |
| 2008 | 2 | 1 |
| 2009 | 2 | 1 |
| 2010 | 0 | 1 |
| 2011 | 2 | 4 |
| 2012 | 2 | 2 |
| 2013 | 2 | 3 |
| 2014 | 3 | 4 |
| 2015 | 3 | 2 |
| 2016 | 2 | 1 |
| 2017 | 2 | 3 |
| 2018 | 3 | 8 |
| 2019 | 4 | 4 |
| 2020 | 9 | 6 |
| 2021 | 2 | 3 |
| 2022 | 3 | 2 |
| 2023 | 1 | 4 |
| 2024 | 4 | 3 |
| 2025 | 3 | 0 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Rat-race balun and associated method for reducing the footprint of a rat-race balun16 Jun 2026US 12,658,552 B2Thales
- Rat-race balun and associated method for reducing the footprint of a rat-race balun12 May 2026US 12,627,018 B2Thales
- System and method for attenuating and/or terminating RF circuit16 Dec 2025US 12,498,395 B2Xcerra Corporation
- High frequency power divider/combiner circuit including a rat-race coupler coupled by first and second coupling structures to first and second input/output ports3 Jun 2025US 12,322,852 B2Advantest Corporation
- GaAs monolithic integrated terahertz low-noise communication system transceiver front-end28 Jan 2025US 12,212,357 B2University of Electronic Science and Technology of China
- RF MIMO Communication System with Signal Restructuring26 Mar 2026US 2026/0088522 A1Mediatek Inc.
- Rat-race coupler26 Feb 2026US 2026/0058346 A1TMY Technology Inc.
- Ultra wideband (uwb) link configuration methods and systems7 Nov 2024US 2024/0372271 A1SPARK Microsystems International Inc.
- Rat-race balun and associated method for reducing the footprint of a rat-race balun4 Jul 2024US 2024/0222827 A1Thales
- Rat-race balun and associated method for reducing the footprint of a rat-race balun4 Jul 2024US 2024/0222839 A1Thales
Most cited
By later US patents
- Structure comprising at least a first element bonded to a carrier having a closed metallic channel waveguide formed therein206US 10,276,909 B2Invensas Bonding Technologies, Inc. · 2019
- Single balanced frequency downconverter for direct broadcast satellite transmissions and hybrid ring signal combiner120US 5,903,827 AFujitsu Compound Semiconductor, Inc. · 1999
- Demultiplexer/multiplexer, antenna device, and fading elimination method41US 10,530,033 B2NEC Corporation · 2020
- 180 degrees hybrid coupler32US 7,319,370 B2TDK Corporation · 2008
- Circuits and methods for performing self-interference cancelation in full-duplex transceivers29US 9,887,862 B2The Trustees of Columbia University in the City of New York · 2018