| Patents for H03H 11 - Networks using active elements (9,098) |
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| 11/03/2004 | CN1543067A Input circuit for television tuner |
| 11/03/2004 | CN1543066A Switchable high-frequency band filter |
| 11/03/2004 | CN1542585A Delay producing method, delay adjusting method based on the same, and delay producing circuit and delay adjusting circuit applied with them |
| 11/03/2004 | CN1174553C Hybrid low-pass sigma-delta modulator |
| 11/02/2004 | US6813486 RF circuit |
| 11/02/2004 | US6812780 Filter circuit and detection circuit having filter circuit |
| 11/02/2004 | US6812765 Pulsed signal transition delay adjusting circuit |
| 11/02/2004 | US6812763 Automatic wideband quadrature frequency generator |
| 10/28/2004 | US20040216014 Delay device, semiconductor testing device, semiconductor device, and oscilloscope |
| 10/28/2004 | US20040212741 Variable gain amplification circuit |
| 10/28/2004 | US20040212462 Active inductor |
| 10/28/2004 | US20040212447 Filter trimming |
| 10/28/2004 | US20040212440 Low-pass filter, feedback system, and semiconductor integrated circuit |
| 10/28/2004 | US20040212417 Large gain range, high linearity, low noise MOS VGA |
| 10/28/2004 | DE10316640A1 Antenna coupling circuit, e.g. for FM receiver, has negative resistance connected in parallel with inductance in main resonant circuit |
| 10/27/2004 | EP1471645A1 Low-pass filter, feedback system, and semiconductor integrated circuit |
| 10/27/2004 | EP1471639A1 Active inductor |
| 10/27/2004 | EP1470641A1 Low-pass filtering device for coupling xdsl channels |
| 10/27/2004 | EP1470640A1 An active filter |
| 10/27/2004 | EP1470634A2 Active emi filter with feed forward cancellation |
| 10/27/2004 | CN1541448A Tunable quadrature phase shifter |
| 10/27/2004 | CN1540867A Low pass filter circuit, feedback system and semiconductor integrated circuit |
| 10/27/2004 | CN1540862A Active inductance |
| 10/27/2004 | CN1173594C Electronic circuit unit |
| 10/27/2004 | CN1173466C Interplator having dual transistor ranks and ratiometric control and method for generating multiple interpolator current |
| 10/26/2004 | US6809616 Inductor equivalent circuit and application thereof |
| 10/21/2004 | US20040207462 High speed multiplier |
| 10/21/2004 | US20040207451 Impedance trimming circuit |
| 10/20/2004 | EP1469600A1 Nonlinear resistor circuit using floating gate mosfets |
| 10/20/2004 | EP1469598A1 Analogue system of generating quadrature signals |
| 10/20/2004 | CN1539201A Analog FIR filter |
| 10/19/2004 | US6806793 MLC frequency selective circuit structures |
| 10/19/2004 | US6806765 Method and apparatus for checking the response of a transconductance- capacitance filter |
| 10/19/2004 | US6806753 Delay circuit and synchronous delay apparatus |
| 10/14/2004 | US20040201409 Delay producing method, delay adjusting method based on the same, and delay producing circuit and delay adjusting circuit applied with them |
| 10/14/2004 | US20040201280 Resistance multiplier circuit and compact gain attenuator |
| 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 |
| 10/13/2004 | EP1466409A1 Balanced gyrator and devices including the balanced gyrator |
| 10/13/2004 | EP1273100B1 Balanced circuit arrangement |
| 10/12/2004 | US6803829 Integrated VCO having an improved tuning range over process and temperature variations |
| 10/12/2004 | US6803813 Time constant-based calibration circuit for active filters |
| 10/12/2004 | US6803812 Active filter |
| 10/07/2004 | WO2004086622A1 Delay circuit and delay circuit control method |
| 10/07/2004 | WO2004086618A1 Monlinear resistence circuit using capacitance-coupled multiple-inpute mosfet |
| 10/07/2004 | US20040198287 Simultaneous Gm-C filter and variable gain amplifier circuit |
| 10/07/2004 | US20040196087 Variable time constant circuit and filter circuit using the same |
| 10/07/2004 | US20040195917 Adaptive radio transceiver with floating MOSFET capacitors |
| 10/07/2004 | DE10241982B4 Digitale Signal-Verzögerungs-Einrichtung Digital signal delay means |
| 10/06/2004 | EP0795244B1 Coupling arrangement in a terminating circuit |
| 10/06/2004 | CN1170367C Phase mixer and multiple-phase generator with phase mixer |
| 09/30/2004 | WO2004084408A1 MULTI-BAND Gm-C STATE-VARIABLE FILTERS USING LOSSY INTEGRATORS |
| 09/30/2004 | WO2004084407A1 Gain equalization device |
| 09/30/2004 | WO2004084404A1 Circuit arrangement and transistor control method |
| 09/30/2004 | WO2003083503A3 Apparatus and method for introducing signal dalay |
| 09/30/2004 | US20040189387 Frequency characteristics-variable amplifying circuit and semiconductor integrated circuit device |
| 09/30/2004 | US20040189372 Timing vernier using a delay locked loop |
| 09/30/2004 | US20040189368 Adaptive delay of timing control signals |
| 09/30/2004 | US20040189367 VCDL with linear delay characteristics and differential duty-cycle correction |
| 09/30/2004 | DE10049355B4 Mikrofonfilter und Mikrofoneinheit Microphone and microphone filter unit |
| 09/29/2004 | CN2645347Y Nuclear magnetic resonant preamplifier electric tuning circuit |
| 09/28/2004 | US6798601 Impact detecting circuit, impact detecting apparatus, and recording and reproducing apparatus including same |
| 09/28/2004 | US6798308 LC controllable oscillator, a quadrature oscillator and a communication arrangement |
| 09/28/2004 | US6798284 Variable-impedance reference circuit and varying method |
| 09/28/2004 | US6798283 Gigabit ethernet transceiver with analog front end |
| 09/28/2004 | US6798281 Two-input/two-output broadband active selector switch with distributed structure, and phase control device comprising such a switch |
| 09/28/2004 | US6798258 Apparatus and method for introducing signal delay |
| 09/23/2004 | WO2004082324A2 Transducer asembly with modifiable buffer circuit and method for adjusting thereof |
| 09/23/2004 | WO2004082139A1 Transmission lead |
| 09/23/2004 | US20040185814 Attenuator with switch function and mobile telephone terminal device using the same |
| 09/23/2004 | US20040185781 System and method for reducing phase noise |
| 09/23/2004 | US20040183628 Negative resistance circuit |
| 09/23/2004 | US20040183625 Control system for the characteristic parameters of an active filter |
| 09/23/2004 | US20040183589 Method for tuning a corner frequency of a low pass filter |
| 09/23/2004 | DE10066138B4 Method to correct periodical signals of incremental positioning measurement system; involves comparing correct value of signal parameter with reference value and determining adjustment value |
| 09/22/2004 | EP1142107B1 Active differential to single-ended converter |
| 09/22/2004 | CN1531196A 可变增益放大电路 A variable gain amplifying circuit |
| 09/22/2004 | CN1168205C Active differential to single-ended converter |
| 09/21/2004 | US6795931 Method and apparatus for an adjustable delay circuit having arranged serially coarse stages received by a fine delay stage |
| 09/21/2004 | US6795001 Analog FIR-filter with Σ Δ modulator and delay line |
| 09/21/2004 | US6794951 Solid state RF power switching network |
| 09/16/2004 | WO2004021565A3 Current driven polyphase filters and method of operation |
| 09/16/2004 | WO2003105464A3 Quadratic video demodulation with baseband nyquist filter |
| 09/16/2004 | US20040180642 Multi-band Gm-C state-variable filters using lossy integrators |
| 09/16/2004 | US20040179703 Modifiable buffer circuit for miniature microphone applications and method of adjusting thereof |
| 09/16/2004 | US20040179702 Transducer assembly with modifiable buffer circuit and method for adjusting thereof |
| 09/16/2004 | DE10308527A1 Abstimmschaltung für ein Filter A filter tuning circuit for |
| 09/15/2004 | EP1458096A1 Control system for the characteristic parameters of an active filter |
| 09/15/2004 | EP1145430B1 Integrated tuner architecture |
| 09/14/2004 | US6791402 Tunable integrated RF filter having switched field effect capacitors |
| 09/14/2004 | US6791401 Continuous-time analog filter having controllable gain characteristics |
| 09/14/2004 | US6791400 Frequency-tuning loop used in the transconductor-capacitor filter |
| 09/10/2004 | WO2004077666A1 Gain variable voltage/current conversion circuit and filter circuit using the same |
| 09/09/2004 | US20040174232 Application of a continuously tuned phase shift to a periodic signal |
| 09/09/2004 | US20040174209 Switched-capacitor low-pass filter and semiconductor pressure sensor apparatus incorporating the filter |
| 09/09/2004 | US20040174208 Filter |
| 09/08/2004 | EP1455449A1 Calibrated fully differential RC filter |
| 09/08/2004 | EP1454415A1 Low-pass filter for a pll, phase-locked loop and semiconductor integrated circuit |
| 09/08/2004 | EP0900478B1 Arrangement and method in a telesystem |
| 09/08/2004 | CN1527481A Wave filter |