| Patents for H03F 1 - Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements (30,272) |
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| 03/17/1999 | CN1211355A Linear transmitter using predistortion |
| 03/16/1999 | US5884151 Switching device for short time mute switching of reproduction of NF-signal in radio receiver |
| 03/16/1999 | US5884150 Nonlinear compensating circuit |
| 03/16/1999 | US5884143 Spacecraft with paralleled amplifiers and redundancy |
| 03/16/1999 | US5883542 Arrangement for reducing and stabilizing the amplification of a Darlington-coupled output stage |
| 03/16/1999 | US5883539 Differential circuit and multiplier |
| 03/16/1999 | US5883535 Slew rate controllable amplification circuit |
| 03/16/1999 | CA2179465C Output stage of operational amplifier suitable for mounting on a substrate and method of amplifying therewith |
| 03/12/1999 | CA2244279A1 Method and circuit arrangement for producing a ring voltage for electronic subscriber circuits |
| 03/11/1999 | DE19736660C1 Regulation circuit for power amplifier linearisation |
| 03/10/1999 | EP0901220A1 Operational amplifier |
| 03/10/1999 | EP0901219A2 Dynamic power allocation system and method for multi-beam satellite amplifiers |
| 03/10/1999 | EP0901058A1 Two stage current mirror |
| 03/10/1999 | EP0610430B1 Analog-to-digital converter and method of fabrication |
| 03/09/1999 | US5881157 Apparatus for compensating a frequency characteristic of a reproduction audio signal |
| 03/09/1999 | US5880641 Apparatus for stabilizing cut-off frequency using a transconductance |
| 03/09/1999 | US5880638 Rail-to-rail operational amplifier and method for making same |
| 03/09/1999 | US5880636 Input stage for operational amplifier utilizing phase delay of active load current mirror to achieve improved bandwidth and phase margin |
| 03/09/1999 | US5880635 Apparatus for optimizing the performance of a power amplifier |
| 03/09/1999 | US5880633 High efficiency power amplifier |
| 03/09/1999 | US5880630 Gain stage and offset voltage elimination method |
| 03/09/1999 | US5880627 Low power op-amp circuit with boosted bandwidth |
| 03/04/1999 | WO1999010987A2 Predistortion linearizer circuit |
| 03/03/1999 | EP0899871A1 Performance selection in an integrated circuit |
| 03/03/1999 | EP0899870A1 Apparatus and method for pre-distortion correction of a power amplifier |
| 03/03/1999 | EP0899869A1 Method and circuit for biasing a transistor stage |
| 03/03/1999 | EP0899815A2 Transmit/receive-module with temperature compensation for phased array antennae |
| 03/03/1999 | EP0899644A2 Bias voltage stabilizing circuit |
| 03/03/1999 | EP0898809A1 Pre-post distortion amplifier |
| 03/03/1999 | CN1209688A Linear regulation device for amplifying circuit |
| 03/02/1999 | US5877928 Electronic circuit device |
| 03/02/1999 | US5877655 Device for limiting the output current of an operational amplifier |
| 03/02/1999 | US5877654 Class a amplifier with a digitally programmable miller compensation network |
| 03/02/1999 | US5877653 Linear power amplifier and method for removing intermodulation distortion with predistortion system and feed forward system |
| 03/02/1999 | US5877647 CMOS output buffer with slew rate control |
| 02/27/1999 | CA2244640A1 Apparatus and method for pre-distortion correction of a power amplifier |
| 02/25/1999 | DE19742954C1 Temperature compensation circuit for FET amplifier |
| 02/24/1999 | EP0897612A2 Transistorized two-port variable-conductance network |
| 02/24/1999 | CN1208989A High efficiency RF amplifier |
| 02/24/1999 | CN1042269C Reference valtage generator with CMOS transistor |
| 02/23/1999 | US5875126 Autozeroing floating gate amplifier |
| 02/23/1999 | US5874860 High frequency amplifier and control |
| 02/23/1999 | US5874857 Amplifier stage with dB-linear output voltage |
| 02/23/1999 | US5874856 Feed forward amplifier |
| 02/18/1999 | WO1999008377A1 Device for transforming into voltage signals weak electric currents impressed by a non-ideal electric current source at the inlet of same device |
| 02/17/1999 | CN1208528A Transmitter |
| 02/17/1999 | CN1208283A Method and apparatus for amplifying signal |
| 02/17/1999 | CN1208282A Amplifier noise reducing method and ultralow-noise pre-amplifier |
| 02/16/1999 | US5872814 Method for linearization of RF transmission electronics using baseband pre-distortion in T/R compensation pilot signals |
| 02/16/1999 | US5872489 Integrated tunable inductance network and method |
| 02/16/1999 | US5872481 Efficient parallel-stage power amplifier |
| 02/11/1999 | DE19738940C1 Cascode-type amplifier circuit e.g. for electronic equipment |
| 02/10/1999 | EP0896426A1 Method for simulating a nonlinear amplifier with envelope memory |
| 02/09/1999 | US5870668 Amplifier having distortion compensation and base station for radio communication using the same |
| 02/09/1999 | US5869995 Output stage having a high disabled output impedance and a low power integrated back buffer to provide disabled output device protection |
| 02/09/1999 | US5869993 Distortion compensation for a capacitively loaded follower |
| 02/09/1999 | US5869989 Amplifying electronic circuit with stable idling current |
| 02/04/1999 | WO1999005869A2 Adaptive pre-equalization apparatus for correcting linear distortion of a non-ideal data transmission system |
| 02/04/1999 | WO1999005784A1 Measuring method and device for measuring the distortion of a high frequency power amplifier and correction method and device for the automatic correction of a high frequency power amplifier |
| 02/04/1999 | WO1999005783A1 Low distortion power amplifier |
| 02/04/1999 | WO1998052278A3 An amplified mos biasing circuit for avoiding latch-up |
| 02/04/1999 | DE19813703A1 Meßverfahren und Meßeinrichtung zum Messen der Verzerrung eines Hochfrequenz-Leistungsverstärkers und Entzerrungsverfahren und Entzerrungseinrichtung zum automatischen Entzerren eines Hochfrequenz-Leistungsverstärkers Measuring method and measuring device for measuring the distortion of a high-frequency power amplifier and equalization method and equalization means for automatically equalizing a high-frequency power amplifier |
| 02/04/1999 | DE19732459A1 Final stage transistor circuit arrangement |
| 02/04/1999 | CA2266739A1 Low distortion power amplifier |
| 02/03/1999 | EP0895350A1 Low power gain controlled amplifier with high dynamic range |
| 02/03/1999 | EP0895349A1 An automatic control system for reducing distortion produced by electrical circuits |
| 02/03/1999 | EP0895348A1 Transistor amplifier stage |
| 02/02/1999 | US5867066 Current amplifier |
| 02/02/1999 | US5867065 Frequency selective predistortion in a linear transmitter |
| 02/02/1999 | US5867064 Method and apparatus for improving intermodulation in a feed-forward amplifier |
| 02/02/1999 | US5867062 DC-offset canceler circuit and differential amplifier circuit equipped therewith |
| 02/02/1999 | US5867060 Power delivery system and method of controlling the power delivery system for use in a radio frequency system |
| 01/28/1999 | WO1999004486A1 Signal processing system |
| 01/28/1999 | WO1998048509A3 Power amplifier and method for temperature control therein |
| 01/28/1999 | WO1998044626A3 Pulse referenced control method for enhanced power amplification of a pulse modulated signal |
| 01/27/1999 | EP0893879A1 Apparatus for linearizing of transmission amplifiers |
| 01/27/1999 | CN1206515A Efficient parallel-stage power amplifier |
| 01/27/1999 | CN1206245A Reference voltage generating circuit |
| 01/24/1999 | CA2242699A1 Device for linearizing transmission amplifiers |
| 01/21/1999 | WO1999003197A2 A high speed and high gain operational amplifier |
| 01/21/1999 | WO1999003196A1 Device for amplifying signals |
| 01/21/1999 | CA2295840A1 A high speed and high gain operational amplifier |
| 01/20/1999 | EP0892333A2 Current source circuit |
| 01/20/1999 | EP0891651A2 Amplifier with improved output voltage swing |
| 01/20/1999 | EP0891650A2 An amplifier circuit, a transmitter and a wireless telephone |
| 01/20/1999 | CN1205576A Differential amplifying device |
| 01/19/1999 | US5862459 Method of and apparatus for filtering intermodulation products in a radiocommunication system |
| 01/19/1999 | US5862031 ESD protection circuit for integrated circuits having a bipolar differential input |
| 01/19/1999 | US5861778 Low noise amplifier structure |
| 01/19/1999 | US5861777 Method and apparatus for compensation of phase distortion in power amplifiers |
| 01/19/1999 | US5861776 High efficiency RF amplifier |
| 01/19/1999 | US5861621 Photosensor circuit having an initial setting unit |
| 01/13/1999 | EP0891041A1 Transmission device |
| 01/13/1999 | EP0890218A1 Adaptive amplifier distortion compensation circuit |
| 01/13/1999 | EP0552316B1 Circuit for reducing intermodulation on the use of semiconductor lasers for optical information transmission |
| 01/13/1999 | CN1204890A Matching circuit and method for matching transistor circuit |
| 01/13/1999 | CN1204887A Predistortion circuit for RF amplifier |
| 01/12/1999 | US5859798 Read circuit for non-volatile memory working with a low supply voltage |
| 01/12/1999 | US5859569 Current feedback differential amplifier clamp |
| 01/12/1999 | US5859568 Temperature compensated amplifier |