| Patents for H03H 19 - Networks using time-varying elements, e.g. n-path filters (1,194) |
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| 08/03/2005 | CN1649261A Active filter |
| 07/28/2005 | US20050164669 High dynamic range time-varying integrated receiver for elimination of off-chip filters |
| 07/28/2005 | US20050162219 Active filter |
| 07/21/2005 | US20050156654 SC circuit arrangement |
| 07/20/2005 | CN1643802A Receiver apparatus |
| 07/14/2005 | US20050152444 Digital filter |
| 06/30/2005 | US20050140397 Method and circuit for controlling a resistance of a field effect transistor configured to conduct a signal with a varying voltage |
| 06/16/2005 | US20050127989 Noise filter circuit |
| 06/15/2005 | CN1627642A Sc电路结构 Sc circuit structure |
| 06/02/2005 | US20050118980 Variable rate RC calibration circuit with filter cut-off frequency programmability |
| 06/02/2005 | US20050116768 Amplifier or filter circuit in switched capacitor circuit logic and method for amplifying or filtering signals |
| 05/25/2005 | CN1620762A Noise elimination circuit |
| 05/24/2005 | US6897720 Switched-capacitor amplifier and analog interface circuit for charge coupled element adopting the same |
| 05/19/2005 | WO2005046054A1 Semiconductor device, radio terminal and radio communication unit |
| 05/19/2005 | US20050104654 Technique for improving antialiasing and adjacent channel interference filtering using cascaded passive IIR filter stages combined with direct sampling and mixing |
| 05/10/2005 | US6891429 Switched capacitor filter |
| 05/04/2005 | DE10357785B3 Linear switched capacitor circuit device using integrated deep-sub-micron technology has thick oxide transistors used in switched capacitor circuit |
| 04/19/2005 | US6882236 Dynamically tuned amplifier for frequency shift keyed signals |
| 04/07/2005 | WO2005031755A1 Active current mode sampling circuit |
| 03/03/2005 | WO2005019804A2 Microfluidic chip with enhanced tip for stable electrospray ionization |
| 03/03/2005 | US20050047969 Microfluidic chip with enhanced tip for stable electrospray ionization |
| 03/01/2005 | US6862322 Switchable-bandwidth optical receiver |
| 03/01/2005 | US6861879 Switched capacitor circuits |
| 02/24/2005 | WO2004095700A3 Reconfigurable baseband filter |
| 02/24/2005 | US20050040886 Switched-capacitor amplifier and analog interface circuit for charge coupled element adopting the same |
| 02/22/2005 | US6859159 Switched-capacitor structures with enhanced isolation |
| 02/09/2005 | CN1578136A Noise filter for an integrated circuit |
| 02/08/2005 | US6853241 Switched-capacitor amplifier and analog interface circuit for charge coupled element adopting the same |
| 02/03/2005 | US20050024130 Noise filter for an integrated circuit |
| 01/26/2005 | CN1571275A Integrated circuit having clock electromagnetic interference protection |
| 01/26/2005 | CN1569911A Unimodal radial block copolymer with functional group and its preparation method |
| 01/05/2005 | CN1183740C Oscillator and phaselocked loop using the same |
| 12/30/2004 | US20040263251 Wideband amplifier |
| 12/23/2004 | WO2004112143A1 Switch capacitor circuit and semiconductor integrated circuit thereof |
| 12/22/2004 | EP1489752A1 Receiver apparatus |
| 12/16/2004 | US20040251948 Adjustable impedance circuit |
| 12/15/2004 | EP1260022A4 Band pass filter from two notch filters |
| 12/15/2004 | EP1250759A4 Band pass filter from two filters |
| 12/15/2004 | EP1250758A4 Band pass filter with improved group delay |
| 11/30/2004 | US6825739 Switched capacitor circuit |
| 11/23/2004 | US6822599 Integrated circuit and A/D conversion circuit |
| 11/04/2004 | WO2004095700A2 Reconfigurable baseband filter |
| 11/03/2004 | CN1174553C Hybrid low-pass sigma-delta modulator |
| 10/27/2004 | EP1131889A4 Droop-free quasi-continuous reconstruction filter interface |
| 10/27/2004 | CN1173469C Circuit and method for reducing sampling noise |
| 10/26/2004 | US6809580 Switched capacitor filter circuit and method of fabricating the same |
| 10/21/2004 | US20040209591 Reconfigurable baseband filter |
| 10/14/2004 | DE102004010356A1 Tiefpassfilter mit geschaltetem Kondensator und Halbleiter-Drucksensorvorrichtung mit diesem Filter Low pass filter with switched-capacitor and semiconductor pressure sensor apparatus with this filter |
| 10/13/2004 | EP1467493A1 Noise filter circuit |
| 10/12/2004 | US6803802 Switched-capacitor integrator |
| 10/12/2004 | US6803568 Multi-channel microfluidic chip for electrospray ionization |
| 10/07/2004 | US20040196936 Switched capacitor filter and digital wireless receiver |
| 09/23/2004 | WO2004004120A3 Filtering applicable to digital to analog converter systems |
| 09/21/2004 | US6795767 On-vehicle electronic controller |
| 09/16/2004 | DE10308527A1 Abstimmschaltung für ein Filter A filter tuning circuit for |
| 09/09/2004 | US20040174209 Switched-capacitor low-pass filter and semiconductor pressure sensor apparatus incorporating the filter |
| 09/02/2004 | US20040169565 Tuning circuit for a filter |
| 09/02/2004 | US20040169532 Device for controlling a frequency response by scaling an impedance |
| 09/01/2004 | CN1525641A Device for controlling a frequency response by scaling an impedance |
| 08/19/2004 | US20040160263 Switched capacitor circuits |
| 08/12/2004 | US20040155703 Method and circuit for correcting the offset of an amplification chain |
| 07/22/2004 | DE10256117A1 Low pass filter with adjustable corner frequency has series branch to which information-carrying signal is fed with resistance device and switch, parallel branch with capacitor, switch controller |
| 07/06/2004 | US6759880 Driver circuit connected to a switched capacitor and method of operating same |
| 06/17/2004 | US20040113830 Integrated circuit and A/D conversion circuit |
| 06/17/2004 | US20040113068 Multi-channel microfluidic chip for electrospray ionization |
| 06/16/2004 | EP1427997A1 Demodulation circuit |
| 06/10/2004 | US20040108891 Switched capacitor circuit |
| 05/06/2004 | US20040085145 Dynamically tuned amplifier for frequency shift keyed signals |
| 05/04/2004 | CA2126525C Signal processing circuit including a variable gain input stage |
| 04/15/2004 | US20040071245 Demodulation circuit |
| 04/15/2004 | US20040070917 Switched-capacitor structures with enhanced isolation |
| 04/15/2004 | US20040070528 Filtering applicable to digital to analog converter systems |
| 04/14/2004 | EP1142127B1 Circuits, systems and methods for processing data in a one-bit format |
| 04/13/2004 | US6720799 Replica network for linearizing switched capacitor circuits |
| 03/17/2004 | CN1482741A Switch capacitor structure with high insulation degree |
| 03/09/2004 | US6703894 Baseband filter for receivers |
| 02/26/2004 | US20040037386 Method and system for adjusting the step clock of a delta-sigma transformer and/or switched capacitor filter |
| 02/05/2004 | US20040021506 Technique and circuit for fast settling of noise reduction filters used in voltage references |
| 01/28/2004 | CN1471234A Switching capacitor structure capable of reducing distortion and noise and increasing insulation |
| 01/27/2004 | US6683514 Switched capacitor circuit |
| 01/08/2004 | WO2004004120A2 Filtering applicable to digital to analog converter systems |
| 12/18/2003 | US20030231033 Driver circuit connected to a switched capacitor and method of operating same |
| 11/12/2003 | EP0706663B2 Electrical test instrument |
| 11/11/2003 | US6646498 High frequency tunable filter |
| 10/23/2003 | US20030197553 Switched capacitor filter circuit and method of fabricating the same |
| 10/09/2003 | WO2003084085A1 Receiver apparatus |
| 09/16/2003 | US6621441 Attenuating undesired frequencies while sampling a communication signal |
| 09/02/2003 | US6614374 High performance switched-capacitor filter for oversampling Sigma-Delta digital to analog converters |
| 08/21/2003 | US20030155967 Switched-capacitor amplifier and analog interface circuit for charge coupled element adopting the same |
| 08/19/2003 | US6608898 Band pass and notch filters for echo reduction with less phase distortion |
| 07/30/2003 | EP1183777B1 Band-pass filter with carrier frequency reduction |
| 07/17/2003 | US20030132797 High frequency tunable filter |
| 07/10/2003 | WO2003056711A1 Noise filter circuit |
| 07/09/2003 | EP1326336A2 High Frequency Tunable Filter |
| 06/04/2003 | CN1110902C Switch capacitor digital-analog converter with decreased harmonic distortion |
| 05/29/2003 | US20030099233 Switched-capacitor integrator |
| 05/27/2003 | US6570411 Switched-capacitor structures with reduced distortion and noise and enhanced isolation |
| 05/07/2003 | EP1309084A1 Piezoelectric vibrator and filter using the same |
| 05/01/2003 | WO2002071621A3 Hybrid low-pass sigma-delta modulator |
| 04/29/2003 | US6556072 Low distortion circuit with switched capacitors |