H03H 17/0273
Polyphase filters
Official title: {Polyphase filters}
H03H17/0273 (Polyphase filters) appears on 176 US grants and 146 published applications in this corpus.
Search patents in H03H- Granted patents
- 176
- Published applications
- 146
- Assignees
- 125
- Inventors
- 325
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 3 | 0 |
| 1989 | 1 | 0 |
| 1990 | 4 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 3 | 0 |
| 1998 | 0 | 0 |
| 1999 | 5 | 0 |
| 2000 | 7 | 0 |
| 2001 | 5 | 2 |
| 2002 | 6 | 8 |
| 2003 | 5 | 6 |
| 2004 | 3 | 7 |
| 2005 | 3 | 5 |
| 2006 | 6 | 14 |
| 2007 | 7 | 6 |
| 2008 | 7 | 7 |
| 2009 | 6 | 5 |
| 2010 | 9 | 3 |
| 2011 | 6 | 4 |
| 2012 | 4 | 7 |
| 2013 | 5 | 2 |
| 2014 | 8 | 3 |
| 2015 | 5 | 5 |
| 2016 | 6 | 7 |
| 2017 | 15 | 14 |
| 2018 | 8 | 4 |
| 2019 | 7 | 4 |
| 2020 | 5 | 6 |
| 2021 | 7 | 6 |
| 2022 | 4 | 5 |
| 2023 | 2 | 9 |
| 2024 | 3 | 3 |
| 2025 | 2 | 4 |
| 2026 | 2 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Signal processing apparatus for generating a plurality of output samples using combiner logic based on a hiearchical tree structure29 Sep 2026US 12,750,040 B2Advantest Corporation
- Method and apparatus for finite impulse response filter under constrained sampling rate2 Jun 2026US 12,647,105 B2Jabil Inc.
- Efficient subband channelizer for randomly-spaced frequency groups20 May 2025US 12,308,810 B2Massachusetts Institute of Technology
- Filter chains with improved signal to noise ratio21 Jan 2025US 12,206,381 B2Infineon Technologies AG
- Digital filterbank for spectral envelope adjustment3 Dec 2024US 12,159,642 B2Dolby International AB
- Polyphase Filter Banks with Rational Decimation / Interpolation Factor14 Aug 2025US 2025/0260392 A1Ramon Space Ltd.
- Digital filterbank for spectral envelope adjustment29 May 2025US 2025/0174241 A1Dolby International AB
- Filter chains with improved signal to noise ratio10 Apr 2025US 2025/0119122 A1Infineon Technologies AG
- Filter circuitry and circuitry comprising the same20 Mar 2025US 2025/0096779 A1Socionext Inc.
- Filter chains with improved signal to noise ratio25 Jul 2024US 2024/0250666 A1Infineon Technologies AG
Most cited
By later US patents
- Efficient polyphase quadrature digital tuner115US 6,049,573 AMassachusetts Institute of Technology · 2000
- Efficient and scalable FIR filter architecture for decimation98US 6,260,053 B1Cirrus Logic, Inc. · 2001
- Finite impulse response filter78US 5,500,811 AMicroUnity Systems Engineering, Inc. · 1996
- Reconfigurable digital filter having multiple filtering modes70US 6,963,890 B2Koninklijke Philips Electronics N. V. · 2005
- Sample rate converter63US 6,411,225 B1Koninklijke Philips Electronics N. V. · 2002