Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Electrical & Energy
Class Information
Number: 327/559
Name: Miscellaneous active electrical nonlinear devices, circuits, and systems > Specific identifiable device, circuit, or system > Unwanted signal suppression > Active filter > Highpass
Description: Subject matter wherein a circuit arrangement allows passage of frequencies of an input signal above a predetermined threshold frequency and blocks passage of frequencies below that threshold.










Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8648652 Band pass filter and calibration method for band pass filter Feb. 11, 2014
8633760 Op-R, a solid state filter Jan. 21, 2014
8618873 High frequency circuit device Dec. 31, 2013
8618872 Filter with controlled cut-off frequency step-down Dec. 31, 2013
8410962 Active RC resonators with enhanced Q factor Apr. 2, 2013
8373502 Gm-C filter tuning circuit based on relaxation oscillator Feb. 12, 2013
8274326 Equalization circuit Sep. 25, 2012
8275026 Equalizer with controllably weighted parallel high pass and low pass filters and receiver including such an equalizer Sep. 25, 2012
8244188 Transmitting and receiving circuit Aug. 14, 2012
8076969 Apparatus for attenuating low frequency signals Dec. 13, 2011
8064508 Equalizer with controllably weighted parallel high pass and low pass filters and receiver including such an equalizer Nov. 22, 2011
7982533 Transceiving system and compound filter Jul. 19, 2011
7933575 Circuit for settling DC offset in direct conversion receiver Apr. 26, 2011
7825722 High pass filter chip Nov. 2, 2010
7800434 Edge detect receiver circuit Sep. 21, 2010
7764117 Method and system for reducing a dynamic offset during the processing of asymmetric signal strings Jul. 27, 2010
7760003 Controllable resistive circuit for providing a continuous variable resistance Jul. 20, 2010
7760013 Transadmittance and filter having a gain function Jul. 20, 2010
7679431 Low flicker noise mixer and buffer Mar. 16, 2010
7649409 All-pass termination network with equalization and wide common-mode range Jan. 19, 2010
7622985 Active compensation filter Nov. 24, 2009
7592864 High-order low-pass filter circuit and method Sep. 22, 2009
7592863 Optimized gain filtering technique with noise shaping Sep. 22, 2009
7535208 Capacitive feedback circuit May. 19, 2009
7514990 Very low frequency high pass filter Apr. 7, 2009
7511570 Transconductance filtering circuit Mar. 31, 2009
7429889 Control system for programmable filters Sep. 30, 2008
7365668 Continuous-time delta-sigma analog digital converter having operational amplifiers Apr. 29, 2008
7358799 Switchable high pass configuration and an optical receiver with a switchable high pass configuration Apr. 15, 2008
7276986 Method and apparatus for improving signal integrity in a high speed flex cable Oct. 2, 2007
7271623 Low-power receiver equalization in a clocked sense amplifier Sep. 18, 2007
7184099 Controllable signal baseline and frequency emphasis circuit Feb. 27, 2007
7118532 Data dependent color wall filters Oct. 10, 2006
7081790 Adjustable bandwidth high pass filter for large input signal, low supply voltage applications Jul. 25, 2006
7038533 Gigabit ethernet transceiver with analog front end May. 2, 2006
7038532 Switched-capacitor high-pass mirrored integrator May. 2, 2006
7002417 RC and SC filter compensation in a radio transceiver Feb. 21, 2006
6995606 High pass filter using insulated gate field effect transistors Feb. 7, 2006
6975848 Method and apparatus for DC offset removal in a radio frequency communication channel Dec. 13, 2005
6894558 Adjustable bandwidth high pass filter for large input signal, low supply voltage applications May. 17, 2005
6882216 On-chip high-pass filter with large time constant Apr. 19, 2005
6744307 Filter circuit Jun. 1, 2004
6744306 Filter circuit Jun. 1, 2004
6731160 Adjustable bandwidth high pass filter for large input signal, low supply voltage applications May. 4, 2004
6593804 Controllable high frequency emphasis circuit for selective signal peaking Jul. 15, 2003
6545569 Filtering device and method of eliminating a DC component by shifting the transfer function Apr. 8, 2003
6516069 Microphone filter and microphone unit Feb. 4, 2003
6420927 Filter and hold circuit utilizing a charge/discharge current Jul. 16, 2002
RE37751 Apparatus and method for transient suppression in synchronous data detection systems Jun. 18, 2002
6388511 Filter circuit May. 14, 2002

1 2 3










 
 
  Recently Added Patents
Beaconing and superframe structure for millimeter wave wireless technologies
Collating device, collating method, and program
Resource compatability for data centers
Method for improving the performance of browser-based, formula-driven parametric objects
Electrophoretic element and display device
Systems and methods for unchoked control of gas turbine fuel gas control valves
Image display device and capsule endoscope system
  Randomly Featured Patents
Smoke detector
Apparatus with intermittent enabling means for detecting end of battery life
Electronic device
Method and system for creating and maintaining an index for tracking files relating to people
Putting practice target
Apparatus for sensing a high phase signal from a multi-phase AC load circuit
Collapsible structure
Fluid jet electric discharge source
Customer relationship management system with network contact center server configured to control automated web and voice dialogues
Goggle