G01R 23/20
Measurement of non-linear distortion
G01R23/20 (Measurement of non-linear distortion) appears on 300 US grants and 225 published applications in this corpus.
Search patents in G01R- Granted patents
- 300
- Published applications
- 225
- Assignees
- 188
- Inventors
- 543
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 4 | 0 |
| 1978 | 4 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 6 | 0 |
| 1982 | 3 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 3 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 3 | 0 |
| 1991 | 4 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 4 | 0 |
| 1996 | 3 | 0 |
| 1997 | 3 | 0 |
| 1998 | 10 | 0 |
| 1999 | 4 | 0 |
| 2000 | 7 | 0 |
| 2001 | 8 | 1 |
| 2002 | 2 | 3 |
| 2003 | 6 | 7 |
| 2004 | 4 | 4 |
| 2005 | 6 | 7 |
| 2006 | 8 | 8 |
| 2007 | 4 | 4 |
| 2008 | 8 | 5 |
| 2009 | 4 | 19 |
| 2010 | 9 | 7 |
| 2011 | 5 | 6 |
| 2012 | 7 | 5 |
| 2013 | 7 | 12 |
| 2014 | 12 | 11 |
| 2015 | 15 | 10 |
| 2016 | 11 | 10 |
| 2017 | 11 | 13 |
| 2018 | 13 | 11 |
| 2019 | 16 | 21 |
| 2020 | 14 | 16 |
| 2021 | 18 | 15 |
| 2022 | 16 | 9 |
| 2023 | 8 | 9 |
| 2024 | 4 | 5 |
| 2025 | 10 | 7 |
| 2026 | 2 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Measurement system for measuring an intercept point value of a device-under-test16 Jun 2026US 12,659,772 B2Rohde & Schwarz GmbH & Co.KG
- System and method for non-invasive sensing of radio-frequency current spectra flowing in a plasma processing chamber26 May 2026US 12,638,485 B2APPLIED Materials.Inc.
- Detection of passive intermodulation distortion in open radio access network30 Dec 2025US 12,512,920 B2Viavi Solutions Inc.
- Method, apparatus and system for measuring nonlinear correlation parameters of nonlinear device21 Oct 2025US 12,451,979 B2Fujitsu Limited
- Measurement system and method of determining a noise figure of a device under test16 Sep 2025US 12,416,665 B2Rohde & Schwarz GmbH & Co.KG
- Signal generator for generating a radio frequency signal23 Oct 2025US 2025/0327843 A1
- Method for detecting whether there is islanding and power conditioning system using same28 Aug 2025US 2025/0271475 A1Hanwha Solutions Corporation
- Device and method for detecting buried power line using high-frequency low-power signal3 Jul 2025US 2025/0216435 A1
- Device and method for detecting disconnection fault of overhead power line3 Jul 2025US 2025/0216436 A1
- Method and apparatus for measuring linearity of tested circuit1 May 2025US 2025/0138081 A1Realtek Semiconductor Corp.
Most cited
By later US patents
- Vector network measurement system145US 6,529,844 B1Anritsu Corporation · 2003
- Method and apparatus for asynchronously measuring frequency shifted signals103US 5,995,914 A1999
- Radio transmitters79US 4,890,300 ARacal Communications Equipment Limited · 1989
- Passive intermodulation test apparatus75US 8,054,088 B2Triasx Pty Ltd. · 2011
- High-pass filter for enhancing the resolution of AC power line harmonic measurements73US 5,347,464 ABasic Measuring Instruments · 1994