| Patents for H03F 1 - Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements (30,272) |
|---|
| 08/19/1998 | EP0859461A1 Mixer circuit with wide dynamic range |
| 08/18/1998 | US5796309 Temperature compensated wide dynamic range power detection circuitry for portable RF transmission terminals |
| 08/18/1998 | US5796307 Amplifying device having input and output nonlinear phase shifters of opposite phase-frequency characteristics |
| 08/18/1998 | US5796306 Wide range variable output amplifier apparatus with high efficiency |
| 08/18/1998 | US5796305 Amplifier arrangements with high damping factor |
| 08/18/1998 | US5796304 Broadband amplifier with quadrature pilot signal |
| 08/18/1998 | US5796302 Single pole negative feedback for class-D amplifier |
| 08/18/1998 | US5796300 Switched-capacitor amplifier offset voltage compensation circuit |
| 08/18/1998 | US5796291 Method and apparatus for compensating for temperature fluctuations in the input to a gain circuit |
| 08/18/1998 | CA2139005C Feedforward amplifier for detecting distortion of an input signal |
| 08/13/1998 | WO1998035438A2 Transistorized two-port variable-conductance network |
| 08/13/1998 | WO1998035437A2 An amplifier circuit, a transmitter and a wireless telephone |
| 08/12/1998 | CN1190286A Method and apparatus utilizing compensated multiple output signal source |
| 08/11/1998 | US5794057 Computer system |
| 08/11/1998 | US5793254 Monolithic amplifier with stable, high resistance feedback element and method for fabricating the same |
| 08/11/1998 | US5793253 High power solid state microwave transmitter |
| 08/11/1998 | US5793194 Bias circuit having process variation compensation and power supply variation compensation |
| 08/04/1998 | US5790943 Dynamic range extension of a log amplifier with temperature and process compensation |
| 08/04/1998 | US5789982 Low distortion feedback IC amplifier and method |
| 08/04/1998 | US5789978 For use with a traveling wave tube amplifier |
| 08/04/1998 | US5789976 Digital adaptive control of feedforward amplifier using frequency domain cancellation |
| 08/04/1998 | US5789974 Calibrating the DC-offset of amplifiers |
| 08/04/1998 | US5789955 For limiting rate of increased current supplied to output nodes of circuits |
| 08/04/1998 | US5789799 High frequency noise and impedance matched integrated circuits |
| 08/04/1998 | US5789689 Tube modeling programmable digital guitar amplification system |
| 07/29/1998 | EP0855101A1 An amplifier and a method for detecting the presence of a load |
| 07/29/1998 | CN1189011A DC-offset canceler circuit and method for using the circuit |
| 07/28/1998 | US5786737 For matching input/output impedances of an element to be evaluated |
| 07/28/1998 | US5786729 Stable bias current circuit for operational amplifier |
| 07/28/1998 | US5786728 Cuber based predistortion circuit and mobile station using the same |
| 07/28/1998 | US5786727 Multi-stage high efficiency linear power amplifier and method therefor |
| 07/28/1998 | US5786698 Capacitive displacement sensor |
| 07/23/1998 | WO1998019391A3 Pulse modulation power amplifier with enhanced cascade control method |
| 07/22/1998 | EP0854570A2 Bias stabilizing circuit |
| 07/22/1998 | EP0854569A1 High-frequency power amplifier |
| 07/22/1998 | EP0854568A2 Monolithic microwave integrated circuit |
| 07/22/1998 | EP0853838A1 Inductorless voltage biasing circuit for an ac-coupled amplifier |
| 07/21/1998 | US5784412 Transmitter and method for transmitting a modulated wave with variable envelope |
| 07/21/1998 | US5784127 Circuit for the power supply of a plurality of power amplifiers |
| 07/21/1998 | US5783970 Driver for N-channel VFET output stage of power amplifier |
| 07/21/1998 | US5783969 Method and system for preventing an amplifier overload condition in a hybrid matrix amplifier array |
| 07/21/1998 | US5783968 RF amplifier method and apparatus |
| 07/21/1998 | US5783965 Bias circuit |
| 07/21/1998 | US5783961 Inverted amplifying circuit |
| 07/21/1998 | US5783937 Reference voltage generator controlled as a function of temperature |
| 07/21/1998 | US5783936 Temperature compensated reference current generator |
| 07/15/1998 | EP0853379A1 Low noise amplifier |
| 07/15/1998 | EP0853378A2 Bias circuit for FET amplifier |
| 07/15/1998 | EP0852844A1 Circuit arrangement comprising a power amplifier stage |
| 07/15/1998 | EP0741881B1 Integrated circuit |
| 07/15/1998 | CN2286356Y Vacuum tube damping isolation electromagnetic beautifying device |
| 07/14/1998 | US5781389 Transistor protection circuit |
| 07/14/1998 | US5781069 Pre-post distortion amplifier |
| 07/14/1998 | US5781068 Transadmittance amplifier for a motor |
| 07/14/1998 | US5781066 Pulse waveform generator |
| 07/09/1998 | WO1998029941A1 Combined linear power amplifying device and method |
| 07/08/1998 | EP0852427A2 Self-calibration system for logarithmic amplifiers |
| 07/08/1998 | EP0852426A1 Voltage to current and current to current converter |
| 07/07/1998 | US5777519 High efficiency power amplifier |
| 07/07/1998 | US5777518 Method of biasing mosfet amplifiers for constant transconductance |
| 07/07/1998 | US5777517 Semiconductor feedback amplifier having improved frequency characteristics |
| 07/07/1998 | US5777516 High frequency amplifier in CMOS |
| 07/07/1998 | US5777513 Voltage amplifier having a large range of variations, and A/D converter comprising such an amplifier |
| 07/07/1998 | US5777512 Method and apparatus for oversampled, noise-shaping, mixed-signal processing |
| 07/07/1998 | US5777463 Device for auto-adapting to the impedance of a supply line |
| 07/07/1998 | CA2139911C Class ab push-pull drive circuit, drive method therefor and class ab electronic circuit using the same |
| 07/02/1998 | WO1998028841A1 Hybrid transconductors and methods |
| 07/02/1998 | WO1998028840A2 Amplifier with improved output voltage swing |
| 07/01/1998 | EP0851584A2 Improvements in or relating to integrated circuits |
| 07/01/1998 | EP0851576A2 High-frequency amplifier |
| 07/01/1998 | EP0851575A2 Radio-frequency amplifiers |
| 07/01/1998 | EP0850509A1 Linearized digital automatic gain control |
| 06/30/1998 | US5774181 Charge amplifier for Mos imaging array and method of making same |
| 06/30/1998 | US5774086 Voltage amplifier having a large range of variations, and A/D converter comprising such an amplifier |
| 06/30/1998 | US5774085 Apparatus and method for obtaining proper output signal in which gain and DC component are regulated based upon on measured amplitude distribution |
| 06/30/1998 | US5774020 Operational transconductance amplifier and multiplier |
| 06/30/1998 | US5774019 Low distortion differential amplifier circuit |
| 06/30/1998 | US5774018 Linear amplifier system and method |
| 06/30/1998 | US5774017 Multiple-band amplifier |
| 06/30/1998 | US5773873 Semiconductor device having multi-emitter structure |
| 06/25/1998 | WO1998027645A1 Intermodulation compensation in multi-channel amplifiers |
| 06/25/1998 | DE19755164A1 Power stage of amplifier/transmitter for magneto-resonance tomograph, transmitter, radar |
| 06/25/1998 | CA2274914A1 Intermodulation compensation in multi-channel amplifiers |
| 06/24/1998 | EP0849875A1 Arrangement for converting analog signal into pulse signal with offset compensation |
| 06/24/1998 | EP0849874A1 Electrical circuit with a switchable feedback circuit |
| 06/23/1998 | US5771444 Efficient transmitter |
| 06/23/1998 | US5770974 Thermal compensation circuit affecting amplifier gain |
| 06/23/1998 | US5770973 Semiconductor device for amplifying audio signals |
| 06/23/1998 | US5770971 Distortion compensation control for a power amplifier |
| 06/23/1998 | US5770956 Measurement amplifier |
| 06/23/1998 | CA2089617C Control circuit for automatically controlled feed forward nonlinear distortion compensation amplifier |
| 06/18/1998 | WO1998026503A1 Efficient parallel-stage power amplifier |
| 06/18/1998 | WO1998026502A2 Linear high-frequency amplifier with high input impedance and high power efficiency |
| 06/18/1998 | WO1998026500A1 Amplifier switch controller and system |
| 06/18/1998 | DE19725459A1 Bias voltage level detector |
| 06/17/1998 | EP0848494A1 Feed forward amplifier system and method |
| 06/17/1998 | EP0847620A1 Circuit arrangement comprising a feedback loop |
| 06/17/1998 | EP0847619A1 Circuit arrangement comprising a cartesian amplifier |
| 06/16/1998 | US5768699 Amplifier with detuned test signal cancellation for improved wide-band frequency response |
| 06/16/1998 | US5768601 Apparatus for eliminating audio noise when power is cycled to a computer |