| Patents for H03H 11 - Networks using active elements (9,098) |
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| 08/07/2001 | US6271720 Operational filter building block |
| 08/07/2001 | US6271719 Operational filter building block |
| 08/07/2001 | CA2239343C A matching circuit and a method for matching a transistor circuit |
| 08/02/2001 | WO2001056157A1 Band pass filter from two filters |
| 08/02/2001 | WO2001056156A1 Band pass filter with improved group delay |
| 08/02/2001 | WO2001056153A1 Circuit arrangement with band-pass filters |
| 08/02/2001 | WO2001056152A1 A digital technologic attenuate control circuit of current-model step by step |
| 08/02/2001 | WO2001056150A1 Method and arrangement for signal filtering |
| 08/02/2001 | US20010011013 System and method for on-chip filter tuning |
| 08/01/2001 | EP1119908A1 Electronic circuit for imitating a capacitor with variable capacitance |
| 08/01/2001 | EP1119907A1 Method of and arrangement for converting voltage to current |
| 07/31/2001 | US6268766 Band pass filter from two notch filters |
| 07/31/2001 | US6268765 2.5V, 30-100 MHz 7th order equiripple delay continuous-time filter and variable gain amplifier |
| 07/31/2001 | US6268750 Flattened resistance response for an electrical output driver |
| 07/26/2001 | WO2001054273A2 Active termination network |
| 07/26/2001 | WO2000028664A3 Fully integrated tuner architecture |
| 07/26/2001 | US20010009848 Voltage tunable active inductorless filter |
| 07/26/2001 | US20010009403 Hybrid low-pass sigma-delta modulator |
| 07/25/2001 | EP1119102A2 Feedback circuit and amplifier and mixer comprising the same |
| 07/24/2001 | US6266522 Apparatus and methods for tuning bandpass filters |
| 07/19/2001 | WO2001052414A1 Improved separation of plural band pass filters |
| 07/19/2001 | US20010008430 System and method for providing a low power receiver design |
| 07/19/2001 | US20010008385 Equaliser circuits |
| 07/19/2001 | US20010008383 Feedback circuit and amplifier and mixer comprising the same |
| 07/17/2001 | US6262641 Frequency multiplier, dielectric transmission line device and radio device |
| 07/17/2001 | US6262623 Log-domain filter having a variable dynamic range window |
| 07/12/2001 | WO2001050599A2 Active isolated-integrator low-pass filter with attenuation poles |
| 07/11/2001 | EP1114518A1 A two-port with a frequency-dependent network |
| 07/10/2001 | US6259325 Single-ended signals to differential signals converter |
| 07/10/2001 | US6259311 Method and apparatus for tuning filters |
| 07/10/2001 | US6259293 Delay circuitry, clock generating circuitry, and phase synchronization circuitry |
| 07/10/2001 | US6259284 Charge free power-on-reset circuit |
| 07/10/2001 | US6259238 Brokaw transconductance operational transconductance amplifier-based micropower low drop out voltage regulator having counterphase compensation |
| 07/05/2001 | WO2001048989A1 Equaliser circuits comprising tuneable transconductance elements |
| 07/05/2001 | WO2001048924A1 Band pass filter from two notch filters |
| 07/05/2001 | WO2001048920A2 Phase-compensated impedance converter |
| 07/05/2001 | WO2001048918A2 Polyphase filter |
| 07/05/2001 | US20010007151 Fully integrated tuner architecture |
| 07/05/2001 | US20010006543 Phase adjustment technique |
| 07/04/2001 | EP1112545A1 Lowpass filter for power supply |
| 07/03/2001 | US6255905 Active filter circuit having a T-network input arrangement that provides a high input impedance |
| 07/03/2001 | US6255881 High tunability CMOS delay element |
| 07/03/2001 | US6255877 Wide range, variable phase shift circuit |
| 06/28/2001 | WO2001047108A2 Error reduction in quadrature polyphase filters with low open loop gain operational amplifiers |
| 06/28/2001 | US20010005672 Voltage tunable active inductorless filter |
| 06/28/2001 | DE19958096A1 Gyratorstrukturen mit hohem Q Gyratorstrukturen high Q |
| 06/27/2001 | EP1111493A1 Low drop voltage regulators with low quiescent current |
| 06/26/2001 | US6252474 Semiconductor phase shifter having high-pass signal path and low-pass signal path connected in parallel |
| 06/26/2001 | US6252459 System and method for a dual bandwidth capacitor multiplying filter |
| 06/26/2001 | CA2205893C Coupling arrangement in a terminating circuit |
| 06/21/2001 | WO2001045273A2 Duplexer with improved transmission/receiving band separation |
| 06/21/2001 | WO2001045252A2 Interpolator having dual transistor ranks and ratiometric control |
| 06/21/2001 | WO2000042659A9 System and method for esd protection |
| 06/21/2001 | US20010004221 Variable capacitance circuit |
| 06/21/2001 | DE19960299A1 Duplexer mit verbesserter Sende-/Empfangsbandtrennung Duplexer with improved transmission / reception band separation |
| 06/21/2001 | CA2392833A1 Duplexer with improved transmission/receiving band separation |
| 06/19/2001 | CA2046798C Pin diode attenuator |
| 06/13/2001 | CN2434826Y D.C to 50 KMH low phase shifting and multifunctional GaAs microwave single chip electrical regulating attenuator |
| 06/12/2001 | US6246283 Power efficient line driver |
| 06/07/2001 | WO2001041307A1 High q gyrator structures |
| 06/07/2001 | WO2001041306A1 Method and circuit for automatically tuning filter circuits over process, voltage, and temperature |
| 06/06/2001 | EP0639347B1 Digital phase shifter |
| 06/06/2001 | CN1066874C Grounded inductance circuit using gyrator circuit |
| 06/06/2001 | CN1066873C Grounded inductance circuit using gyrator circuit |
| 05/31/2001 | WO2001039372A1 An active polyphase filter with transconductor cross-coupling of filter sections |
| 05/31/2001 | WO2001039362A2 Gilbert-cell mixer using bipolar transistors |
| 05/31/2001 | US20010002207 Signal canceling method and device |
| 05/30/2001 | EP1104102A1 Active filter and method of adjusting a band thereof |
| 05/29/2001 | US6240131 Digitally controlled transmission line equalizer |
| 05/29/2001 | US6239667 Attenuation equalizer for transmission lines |
| 05/29/2001 | US6239654 Filter circuit |
| 05/29/2001 | US6239653 Biquadratic basic cell for programmable analog time-continuous filter |
| 05/24/2001 | US20010001759 Apparatus and methods for tuning bandpass filters |
| 05/24/2001 | US20010001546 Power efficient line driver |
| 05/23/2001 | EP1101285A1 Single chip cmos transmitter/receiver and vco-mixer structure |
| 05/23/2001 | CN1296673A Method and arrangement in analog line interface circuit |
| 05/23/2001 | CN1066306C Method for alignment of analog circuit sections within integrated circuit |
| 05/22/2001 | US6236847 Receiver and filter arrangement comprising polyphase filters |
| 05/22/2001 | US6236524 Adjustable impedance booster |
| 05/17/2001 | WO2001035529A2 Single chip cmos transmitter/receiver and method of using same |
| 05/17/2001 | WO2001035527A2 Gigabit ethernet transceiver with analog front end |
| 05/15/2001 | US6233293 Current-controlled carrier tracking filter for improved spurious signal suppression |
| 05/10/2001 | US20010000952 Clock control method and circuit |
| 05/09/2001 | EP1098449A1 Receiver for receiving signals with different frequency bandwidths in different frequency bands |
| 05/09/2001 | CN1294450A Method and device for regulating electric filter |
| 05/08/2001 | US6229370 Amplifier |
| 05/08/2001 | US6229348 Balance-to-single signal converting circuit |
| 05/02/2001 | EP1095447A1 Circuit arrangement providing impedance translation filtering |
| 05/01/2001 | US6225859 Integrated low-pass filter |
| 04/26/2001 | WO2001028310A2 An adaptive radio transceiver |
| 04/24/2001 | US6222409 Variable analog delay line for analog signal processing on a single integrated circuit chip |
| 04/24/2001 | US6222408 Synchronous delay circuit |
| 04/24/2001 | US6222405 Apparatus and method for generating accurate quadrature over a frequency range |
| 04/19/2001 | US20010000297 Biquad notch filter |
| 04/18/2001 | EP1092221A1 A read channel with programmable bandwidth control |
| 04/12/2001 | WO2001026339A1 Band pass and notch filters for echo reduction with less phase distortion |
| 04/12/2001 | DE19936430A1 Analoges Filter Analog filter |
| 04/10/2001 | US6215816 Physical layer interface device |
| 04/10/2001 | CA2035370C Frequency and/or phase characteristic control circuit having controlled current multiplying ratio |
| 04/05/2001 | WO2001024363A2 An integrated circuit having a filter with charge balancing scheme to reduce transient disturbances |