H03C 3/403
Using two quadrature frequency conversion stages in cascade
Official title: {using two quadrature frequency conversion stages in cascade}
H03C3/403 (Using two quadrature frequency conversion stages in cascade) appears on 29 US grants and 15 published applications in this corpus.
Search patents in H03C- Granted patents
- 29
- Published applications
- 15
- Assignees
- 28
- Inventors
- 51
- Latest grant
- 25 Jun 2019
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 2 | 0 |
| 2003 | 2 | 4 |
| 2004 | 3 | 2 |
| 2005 | 0 | 4 |
| 2006 | 3 | 1 |
| 2007 | 2 | 2 |
| 2008 | 5 | 0 |
| 2009 | 1 | 0 |
| 2010 | 0 | 1 |
| 2011 | 1 | 0 |
| 2012 | 0 | 0 |
| 2013 | 1 | 0 |
| 2014 | 0 | 0 |
| 2015 | 1 | 1 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Envelope detector-based feedback for radio frequency (RF) transmitters25 Jun 2019US 10,333,764 B1Intel Corporation
- Modulation through differentially delayed clocks20 Oct 2015US 9,166,577 B2QUALCOMM Incorporated
- Modulation and demodulation of band-limited signals using near-Nyquist sampling19 Mar 2013US 8,401,108 B1L-3 Communications Corporation
- IQ-modulation16 Aug 2011US 7,999,629 B2Infineon Technologies AG
- Tuner for radio frequency receivers and associated method16 Jun 2009US 7,548,742 B2Silicon Laboratories Inc.
- Modulation through differentially delayed clocks30 Jul 2015US 2015/0214939 A1QUALCOMM Incorporated
- IQ-Modulation9 Sep 2010US 2010/0225409 A1Infineon Technologies AG
- Active 90-degree phase shifter with LC-type emitter degeneration and quadrature modulator IC using the same18 Oct 2007US 2007/0241835 A1National Sun Yat-Sen University
- Mixing dac architectures for a radio frequency receiver19 Apr 2007US 2007/0085719 A1Silicon Laboratories Inc.
- Multi-mode modulator and transmitter29 Jun 2006US 2006/0141952 A1Sirific Wireless Corporation
Most cited
By later US patents
- Up-conversion mechanism employing side lobe-selective pre-distortion filter and frequency replica-selecting bandpass filter respectively installed upstream and downstream of digital-to-analog converter81US 5,930,301 AHarris Corporation · 1999
- Quadrature local oscillator network75US 5,412,351 A1995
- Method and apparatus for quadrature modulation69US 4,816,783 AMotorola, Inc. · 1989
- Baseband linearizer for wideband, high power, nonlinear amplifiers67US 4,462,001 ACanadian Patents and Development Limited · 1984
- Local oscillator and mixer for a radio frequency receiver and related method31US 6,778,117 B1Silicon Laboratories Inc. · 2004