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)
01/2004
01/14/2004CN1468466A A gmc filter and method for suppressing unwanted signals introduced by the filter
01/14/2004CN1468465A 滤波器电路 Filter circuit
01/13/2004US6678511 Circuit for correcting pass band flatness
01/13/2004US6677829 Balanced transmission termination device and receiver unit composed thereof
01/13/2004US6677822 Transconductor and filter circuit using the same
01/13/2004US6677815 Second order active RC filter with imaginary zero
01/07/2004CN1134106C Active low-pass filter
01/06/2004US6674341 Phase shifter and multibit phase shifter
01/02/2004EP1376869A1 Variable phase-shift circuit, phase interpolator including the same, and a digital frequency synthesizer incorporating such an interpolator
01/02/2004EP1376863A2 Method and circuit for producing control signal for impedance matching
01/02/2004EP1374398A2 Circuit and method for input side impedance matching of a power amplifier in an electronic device
01/02/2004EP1374390A2 Dc-coupling approach for current mode circuits
01/01/2004US20040000926 Impedance control circuit for controlling multiple different impedances with single control circuit
12/2003
12/31/2003WO2003073469A3 Delay circuit with delay relatively independent of process, voltage, and temperature variations
12/31/2003CN1465130A Active common mode emi filter mitigating conducted electromagnetic interference
12/30/2003US6671360 Intercom system for a building or apartment house
12/30/2003US6670846 Semiconductor integrated circuit including a filter with adjustable cut-off frequency
12/25/2003US20030236641 Method and system of calibrating the control delay time
12/25/2003US20030235296 ADSL receiver high pass filter architecture
12/25/2003US20030234686 Impedance matching circuit
12/25/2003US20030234683 Frequency-tuning loop used in the transconductor-capacitor filter
12/25/2003US20030234682 Active filter
12/25/2003US20030234681 Second order active rc filter with imaginary zero
12/24/2003CN1132330C Filter allocation adaptive for ADSl shunt device
12/24/2003CN1132309C Impedance means and its control method
12/23/2003US6668165 Inverted super regenerative receiver
12/18/2003WO2003105464A2 Quadratic video demodulation with baseband nyquist filter
12/18/2003WO2003105341A1 Active load arrangement
12/18/2003US20030231053 Tunable filter circuit including a phase locked loop
12/18/2003US20030231041 Dual control analog delay element and related delay method
12/18/2003US20030231026 Circuit and method for adjusting circuit tolerances
12/17/2003CN1131591C Phase shift apparatus
12/16/2003US6665353 Quadrant switching method for phase shifter
12/16/2003US6664870 Compact 180 degree phase shifter
12/16/2003US6664854 Base band filter including a semiconductor integrated circuit
12/16/2003US6664835 Phase splitter
12/11/2003WO2003103135A1 An amplifier circuit, gyrator circuit, filter device and method for amplifying a signal
12/11/2003WO2003103131A2 Image rejection quadratic filter
12/11/2003US20030227966 Methods, devices and computer program products for adaptively adjusting passbands of high-pass filters of asymmetric digital subscriber link (ADSL) modems
12/11/2003US20030227353 Variable phase shifter and a system using variable phase shifter
12/10/2003EP1370077A2 Trap circuit and television receiver for its application
12/10/2003EP1368893A2 Continuously tunable phase shifter
12/10/2003EP0909481B1 Receiver and filter arrangement comprising polyphase filters
12/10/2003CN1461525A LC controllable oscillator, quadrature oscillator and communication arrangement
12/10/2003CN1461524A Tunable quadrature phase shifter
12/10/2003CN1130826C Broad-band phase shifter with adjustable positive slope
12/10/2003CN1130823C Dual-band dual-mode power amplifier
12/09/2003US6661280 Electronic filter circuit with feed back loop
12/09/2003US6661250 Programmable impedance control circuit
12/04/2003US20030224746 Unconditionally stable on-chip filter and applications thereof
12/03/2003EP1366567A1 Filter trimming
12/02/2003US6657512 Method to find a value within a range using weighted subranges
12/02/2003US6657483 Adjusting the trans-conductance of a filter
11/2003
11/27/2003WO2003098807A1 Low-pass filter for a pll, phase-locked loop and semiconductor integrated circuit
11/26/2003CN1459144A Circuit and method for input side impedance matching of power amplifier in electronic device
11/26/2003CN1129228C Multiport gyrator
11/20/2003US20030214339 Timing generation circuit and method for timing generation
11/20/2003US20030214338 Tunable delay circuit
11/19/2003EP1363398A1 Phase shifting circuit and phase shifter
11/19/2003EP1362421A1 Tunable quadrature phase shifter
11/19/2003CN1457147A High-frequency variable capacitance circuit
11/18/2003US6650177 System and method for tuning an RC continuous-time filter
11/13/2003WO2003094348A1 An integrated low power channel select filter having high dynamic range and bandwidth
11/13/2003WO2003094347A1 A wideband catv signal splitter device
11/13/2003WO2003094330A1 Active common mode emi filters
11/13/2003US20030210563 Active common mode EMI filters
11/13/2003US20030210070 Internal bus termination technique for integrated circuits with local process/voltage/temperature compensation
11/11/2003US6646499 Voltage-controlled capacitor
11/11/2003US6646498 High frequency tunable filter
11/11/2003US6646497 Filter apparatus
11/11/2003US6646489 Device for switching radio frequency signals
11/11/2003US6646488 Delay circuit with delay relatively independent of process, voltage, and temperature variations
11/11/2003US6646463 Impedance emulator
11/06/2003WO2003058791A3 Active emi filter with feed forward cancellation
11/06/2003WO2003005583A3 A reconfigurable analog cell and an arrangement comprising a plurality of such cell
11/06/2003US20030207679 Integrated low power channel select filter having high dynamic range and bandwidth
11/06/2003US20030206141 Active impedance matching in communications systems
11/06/2003US20030206075 Method to find a value within a range using weighted subranges
11/06/2003US20030206061 Differential amplifier and filter circuit using the same
11/04/2003US6643324 Pad cell circuit-integrated, differential-signal equalization receiver for integrated circuit and method of boosting and equalizing high frequency differential signals
11/04/2003US6642780 Variable frequency filter circuit
10/2003
10/30/2003WO2002087462A3 Integrated low-corner frequency high pass filter circuit
10/30/2003WO2001093429A3 Track/attenuate circuit and method for switched current source dac
10/30/2003US20030201846 Balanced high-frequency device and balance-characteristics improving method and balanced high-frequency circuit using the same
10/30/2003US20030201810 Pulsed signal transition delay adjusting circuit
10/29/2003EP1356588A1 Tunable integrated rf filter having switched field effect capacitors
10/29/2003EP1356587A1 Electronic filter circuit with feed back loop
10/29/2003EP1356552A1 Multi-circuit signal transformer
10/29/2003EP1356538A1 Reconfigurable broadband active power splitter, ditto power combiner and ditto bidirectional power splitter/power combiner and circuits based on these
10/29/2003CN1452114A 半导体存储装置 The semiconductor memory device
10/29/2003CN1126250C Receiver and filter arrangement comprising polyphase filters
10/29/2003CN1126249C Active filter circuit
10/29/2003CN1126243C Voltage controlled ascillator
10/23/2003WO2003088477A1 Variable attenuator
10/23/2003WO2003088476A1 Circuit and method for adjusting circuit tolerances
10/23/2003US20030198096 Semiconductor memory device
10/23/2003US20030197561 Single-ended-to-differential converter with common-mode voltage control
10/23/2003US20030197540 Sequential activation delay line circuits and methods
10/23/2003CA2482450A1 Circuit and method for adjusting circuit tolerances
10/22/2003EP1354425A2 Filter arrangement
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