Patents
Sitemap › H03 - Basic electronic circuitry › H03H - Impedance networks, e.g. resonant circuits; Resonators › H03H 11 - Networks using active elements
Patents for H03H 11 - Networks using active elements (9,098)
10/2003
10/22/2003EP1256167B1 Error reduction in quadrature polyphase filters with low open loop gain operational amplifiers
10/22/2003EP1245080B1 An active polyphase filter with transconductor cross-coupling of filter sections
10/22/2003EP0882361B1 Wideband signal distribution system
10/21/2003US6637008 Electronic holding circuit and adjusting method thereof using a probabilistic searching technique
10/21/2003US6636108 Filter circuit and electronic device using the same
10/21/2003US6636085 Phase shifter with an RC polyphase filter
10/16/2003WO2003085829A1 Application-specific integrated circuit for a low-pass filtering device used for decoupling xdsl channels
10/16/2003WO2003085828A1 Polyphase filter with integrators
10/16/2003WO2003085825A2 Filter control for varying data rate communication channels
10/16/2003US20030194978 System and method for coarse/fine PLL adjustment
10/15/2003EP1353461A1 Analog filter
10/15/2003EP1353442A1 Filter circuit
10/15/2003CN1449111A Filter circuit, front end of communication system including the filter circuit, and communication device including the same
10/14/2003US6633189 Circuit to provide a time delay
10/09/2003WO2003084085A1 Receiver apparatus
10/09/2003WO2003083503A2 Apparatus and method for introducing signal dalay
10/09/2003WO2002033812A3 Dc-coupling approach for current mode circuits
10/09/2003US20030189462 Trans-conductance amplification circuit, trans-conductance filter circuit, and filtering method
10/09/2003US20030189458 Differential termination resistor adjusting circuit
10/08/2003EP1351388A1 Phase shifter and multibit phase shifter
10/08/2003EP1351387A2 Trans-conductance amplification circuit trans-conductance filter circuit and filtering method
10/08/2003EP0885456B1 A method of and a device for increasing the dynamic range of image sensors
10/07/2003US6631265 Apparatus and methods for tuning bandpass filters
10/07/2003US6630860 Programmable phase locked-loop filter architecture for a range selectable bandwidth
10/07/2003CA2290723C A high tunability cmos delay element
10/02/2003US20030184384 Voltage-limited distributed current source for ultra-broadband impedance termination
10/02/2003US20030184380 Single-ended-to-differential converter with common-mode voltage control
10/02/2003US20030184378 Mixer and differential amplifier having bandpass frequency selectivity
10/02/2003US20030184367 Filter circuit, front end of communication system including the filter circuit, and communication device including the same
10/02/2003US20030184366 Filter circuit and detection circuit having filter circuit
10/02/2003US20030184319 Impedance matching device provided with reactance-impedance table
10/01/2003EP1349274A2 Filter circuit, front end of communication system including the filter circuit, and communication device including the same
10/01/2003EP1349273A2 Single-ended-to-differential converter with common-mode voltage control
10/01/2003EP1349268A2 Large gain range, high linearity, low noise MOS VGA
10/01/2003CN1445926A Balance high frequency device, method for improving balance characteristic and balance high frequency circuit using the device
09/2003
09/30/2003US6628960 Multi-mode radio receiver
09/30/2003US6628783 Filter arrangement applicable to ADSL splitters
09/30/2003US6628163 Circuit for tuning an active filter
09/30/2003US6628157 Variable delay element for use in delay tuning of integrated circuits
09/30/2003US6627987 Ceramic semiconductor package and method for fabricating the package
09/25/2003WO2003079406A2 Voltage-limited distributed current source for ultra-broadband impedance termination
09/24/2003EP1346467A2 Integrated direct conversion satellite tuner
09/24/2003EP1247339B1 Polyphase filter
09/23/2003US6624688 Filtering variable offset amplifer
09/23/2003US6624484 Insulated gate field effect transistor comprising source, drain and surrounding region, gate electrode over channel between source and drain and boundary with surrounding region, which has means for connection to alternating current ground
09/18/2003WO2003077418A1 Integrated frequency selectable resonant coupling network and method thereof
09/17/2003EP1345323A1 Balanced high-frequency device and balance-characteristics improving method and balanced high-frequency circuit using the same
09/17/2003CN1121756C Off line discharge protector
09/16/2003US6621371 System board and impedance control method thereof
09/16/2003US6621320 Vcc independent time delay circuit
09/11/2003US20030171109 Integrated frequency selectable resonant coupling network and method thereof
09/11/2003US20030169101 Semiconductor integrated circuit including a filter
09/11/2003US20030169100 Filter circuit
09/09/2003US6618579 Tunable filter with bypass
09/09/2003US6617909 Phase blender and multi-phase generator using the same
09/04/2003WO2003073469A2 Delay circuit with delay relatively independent of process, voltage, and temperature variations
09/04/2003WO2001093491A3 High frequency network transmitter
09/04/2003US20030164761 High and low frequency band dual output transducer
09/03/2003EP1234378B1 High q gyrator structures
09/02/2003US6614304 Variable gain circuit having external controls and a low supply voltage
09/02/2003US6614278 Pulsed signal transition delay adjusting circuit
08/2003
08/28/2003US20030162521 System and method for on-chip filter tuning
08/27/2003EP1338089A2 Active continuous-time filter with increased dynamic range in the presence of blocker signals
08/26/2003US6611177 Voltage controlled oscillator including fluctuation transmitter for transmitting potential fluctuation by noise
08/21/2003US20030155994 Cascaded arrangement of lower order filters and method of designing the same
08/21/2003US20030155969 Variable-impedance reference circuit and varying method
08/21/2003US20030155955 Voltage controlled oscillator programmable delay cells
08/21/2003US20030155954 Delay circuit with delay relatively independent of process, voltage, and temperature variations
08/20/2003CN1118933C Equipment and method in one telecommunication system
08/19/2003US6608898 Band pass and notch filters for echo reduction with less phase distortion
08/19/2003US6608603 Active impedance matching in communications systems
08/19/2003US6608527 Adaptive radio transceiver with low noise amplification
08/19/2003US6608525 Operational transconductance amplifier and filter circuit
08/19/2003US6608516 Adjustable time constant integrator
08/19/2003US6608361 On-chip inductor using active magnetic energy recovery
08/14/2003US20030151438 Switched capacitor transmitter pre-driver
08/13/2003EP1177621B1 Mos variable gain amplifier
08/13/2003CN1435951A Base band circuit of receiver and low frequency cut-off frequency controlling method
08/13/2003CN1118136C Clamp-like movement delayed circuit with output signal repeat sycle different from input signal
08/12/2003US6606212 Wideband readout of magneto-resistive heads for data storage
08/07/2003WO2003065578A1 An active filter
08/07/2003WO2003065574A2 Variable impedance load for a variable gain radio frequency amplifier
08/06/2003CN2565201Y Single-period controlled active filter based on complementary control
08/06/2003CN2565200Y Single period controlled active filter capable of inhibiting DC component of current
08/05/2003US6603340 Delay circuit, voltage-controlled delay circuit, voltage-controlled oscillation circuit, delay adjustment circuit, DLL circuit, and PLL circuit
08/05/2003US6603217 Semiconductor circuit device having hierarchical power supply structure
07/2003
07/31/2003WO2003063349A1 Nonlinear resistor circuit using floating gate mosfets
07/31/2003US20030142767 Base band circuit of receiver and low cut-off frequency control method
07/31/2003US20030141927 Variable impedance load for a variable gain radio frequency amplifier
07/31/2003US20030141925 Adjustable time constant integrator
07/31/2003US20030141859 Analog filter with built-in self test
07/29/2003US6600354 Clock control method and circuit
07/29/2003US6600294 Switched reactance phase shifters
07/29/2003CA2298310C Low-voltage transconductance amplifier/filters
07/24/2003WO2003061121A1 Low-pass filtering device for coupling xdsl channels
07/24/2003WO2003061120A1 Phase shifting circuit and phase shifter
07/24/2003US20030137354 Interpolator having dual transistor ranks and ratiometric control
07/24/2003US20030137284 Switched reactance phase shifters
07/23/2003EP1330028A2 Low-pass filter
07/23/2003CN2562497Y Phase shifter of miniature radio frequency mechanism system
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