| 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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| 07/06/1999 | CA2256177A1 Digital linear amplifier, methods and system |
| 07/06/1999 | CA2256165A1 Phase and amplitude radiofrequency signal control device |
| 07/01/1999 | WO1999033172A1 Power amplification system and mobile radio communication terminal |
| 07/01/1999 | WO1999033171A1 Error corrrected amplifier circuit and method |
| 07/01/1999 | WO1999033170A1 Method and apparatus for wideband predistortion linearization |
| 07/01/1999 | WO1999033169A2 Method and device for phase regulation |
| 07/01/1999 | WO1999033168A1 Low voltage transistor biasing |
| 07/01/1999 | WO1999033167A1 Feed forward amplifier with digital intermodulation control |
| 06/30/1999 | EP0926818A2 Class A/F amplifier |
| 06/30/1999 | EP0926817A1 Improved feedforward multicarrier linear RF power amplifier |
| 06/30/1999 | EP0926816A1 Operational amplifier arrangement |
| 06/30/1999 | EP0926815A1 High-efficiency low-distortion linear power amplifier circuit for signals having a high peak power to mean power ratio and method for driving it |
| 06/30/1999 | EP0925643A1 High-efficiency amplifying device |
| 06/30/1999 | EP0925642A1 Device for amplifying signals |
| 06/30/1999 | CN1221253A Apparatus and method for pre-distortion correction of power amplifier |
| 06/29/1999 | US5917382 Sensor of the instant power dissipated in a power transistor |
| 06/29/1999 | US5917381 Amplifier |
| 06/29/1999 | US5917378 Rail-to-rail type of operational amplifier with a low offset voltage achieved by mixed compensation |
| 06/29/1999 | US5917376 Circuit and technique for compensating high gain amplifier without compensation capacitors |
| 06/29/1999 | US5917375 Low distortion amplifier circuit with improved output power |
| 06/29/1999 | US5917373 To compensate distortion generated in an amplifier of a data transfer system |
| 06/29/1999 | US5917370 Split load resistor for wideband preamplifier for magneto-resistive head |
| 06/24/1999 | WO1999031801A1 Method of biasing an mos ic to operate at the zero temperature coefficient point |
| 06/24/1999 | WO1999031796A1 Feedforward amplifier network with swept pilot tone |
| 06/24/1999 | WO1999019990A3 Compensation of delay in linearization loop of power amplifier |
| 06/24/1999 | WO1999010987A9 Predistortion linearizer circuit |
| 06/23/1999 | EP0924912A1 Low IMD amplification method and apparatus |
| 06/23/1999 | EP0924889A2 Intermediate amplification device in a transmission network |
| 06/23/1999 | EP0923806A2 An amplified mos biasing circuit for avoiding latch-up |
| 06/23/1999 | CN1220784A Hybrid matrix amplifier with noise reduction |
| 06/23/1999 | CN1220516A Feed forward amplifier improvement |
| 06/22/1999 | US5915213 Transmitter apparatus with linearizing circuit to compensate for distortion in power amplifier |
| 06/22/1999 | US5914641 Gate voltage control circuit of a power amplifier |
| 06/22/1999 | US5914640 Method and system for matching the input impedance of an RF amplifier an antenna to impedance |
| 06/22/1999 | US5914634 Multiple switchable input LNA with input impedance control |
| 06/19/1999 | CA2252210A1 Feed forward amplifier improvement |
| 06/17/1999 | WO1999030426A1 Programmable linear receiver |
| 06/16/1999 | EP0923213A2 Compensation of nonlinearlities in transmitters using quadrature modulation |
| 06/16/1999 | EP0923193A1 Improved pilot detection for a control system that reduces distortion produced by electrical circuits |
| 06/16/1999 | CN1219806A Improved pilot detection method for control system that reduces distortion produced by electrical circuits |
| 06/16/1999 | CN1219802A Push-pull wideband semiconductor amplifier |
| 06/16/1999 | CN1219801A Power source circuit of semiconductor integrated circuit |
| 06/16/1999 | CA2224953A1 A low voltage topology for radio frequency integrated circuit design |
| 06/15/1999 | US5913154 Rf device |
| 06/15/1999 | US5912977 Distortion suppression in hearing aids with AGC |
| 06/15/1999 | US5912588 Gain control circuit for a linear power amplifier |
| 06/15/1999 | US5912586 Feed forward amplifier with digital intermodulation control |
| 06/15/1999 | US5912585 Vacuum tube audio amplifying circuit |
| 06/15/1999 | US5912584 Analog signal processing device and correlation computing device |
| 06/15/1999 | CA2176551C Method and apparatus for amplifying a signal |
| 06/10/1999 | WO1999029037A1 High frequency power amplifying circuit, and mobile communication apparatus using it |
| 06/10/1999 | WO1999028768A2 Optical receiver |
| 06/09/1999 | EP0921635A1 Power amplifier device |
| 06/09/1999 | EP0921634A1 Differential amplifier with adjustable linearity |
| 06/09/1999 | EP0921619A2 A power source circuit of a semiconductor integrated circuit |
| 06/09/1999 | EP0920730A2 Amplifier suitable for cable-network applications |
| 06/09/1999 | EP0722625A4 Feedforward amplifier for minimizing distortion |
| 06/09/1999 | CN1219302A Alinearizer for linearizing a non-linear component controlled by control voltage |
| 06/09/1999 | CN1219025A Microwave amplifier for reducing pulsating noise |
| 06/09/1999 | CN1219024A Semiconductor circuit for compensating distortion caused by change of envirenment temperature |
| 06/09/1999 | CN1219023A Semiconductor circuit having stable gain slope |
| 06/09/1999 | CN1219022A Gain characteristic compensating circuit |
| 06/08/1999 | US5910751 Circuit arrangement and method with temperature dependent signal swing |
| 06/08/1999 | US5910749 Current reference circuit with substantially no temperature dependence |
| 06/03/1999 | WO1999027645A1 An amplifier and a method of power amplification |
| 06/03/1999 | WO1999014854A3 A high frequency amplifier, and a communication receiver or transceiver |
| 06/02/1999 | EP0920125A2 Push-pull wideband semiconductor amplifier |
| 06/02/1999 | EP0920124A2 Compensatory circuit with gain character |
| 06/02/1999 | EP0920123A2 Semiconductor circuit in which distortion caused by changes in ambient temperature is compensated |
| 06/02/1999 | EP0920122A2 Semiconductor circuit with a stabilized gain slope |
| 06/02/1999 | EP0919107A1 High back emf, high pressure subwoofer |
| 06/02/1999 | EP0919082A1 A differential amplifier, an integrated circuit, and a telephone |
| 06/02/1999 | EP0746902A4 Predistorter for high frequency optical communications devices |
| 06/02/1999 | DE19821735A1 Power amplifier with biasing voltage circuit |
| 06/01/1999 | US5909642 Nonlinear distortion detecting circuit and nonlinear distortion compensating circuit for transmitter |
| 06/01/1999 | US5909147 Amplifier having DC coupled gain stages |
| 06/01/1999 | US5909145 Variable control of electronic power supplies |
| 06/01/1999 | US5909135 High-side MOSFET gate protection shunt circuit |
| 06/01/1999 | CA2175800C Switch-mode power supply for a bridged linear amplifier |
| 05/27/1999 | DE19751645A1 Intermediate amplifier with signal amplifying stage in transmission network |
| 05/26/1999 | CN1217864A High-fidelity and high-efficiency analog amplifier combined with digital amplifier |
| 05/25/1999 | US5907259 Operational amplification circuit capable of driving a high load |
| 05/21/1999 | CA2251979A1 Intermediate amplifier device for a transmission network |
| 05/20/1999 | WO1999025073A2 Adaptation method and amplifier arrangement |
| 05/20/1999 | WO1999025072A2 Control method and control arrangement |
| 05/20/1999 | WO1999010987A3 Predistortion linearizer circuit |
| 05/19/1999 | EP0917285A1 Low-voltage amplifiers |
| 05/19/1999 | EP0917284A2 Differential amplifier and a method of compensation |
| 05/19/1999 | EP0916182A1 High-gain common-emitter output stage |
| 05/19/1999 | EP0916181A1 Voltage to current converter for high frequency applications |
| 05/18/1999 | US5905760 Method of correcting nonlinearities of an amplifier, and radio transmitter employing a method of this type |
| 05/18/1999 | US5905617 Differential amplifier having a protection circuit |
| 05/18/1999 | US5905408 Amplifier and a method for detecting the presence of a load |
| 05/18/1999 | US5905407 High efficiency power amplifier using combined linear and switching techniques with novel feedback system |
| 05/14/1999 | WO1999023756A1 Method and device in a telecommunication system |
| 05/14/1999 | WO1999023755A1 A linear rf power amplifier with optically activated switches |
| 05/14/1999 | WO1999016172A3 Temperature compensation in electronic devices |
| 05/14/1999 | WO1999003197B1 A high speed and high gain operational amplifier |
| 05/12/1999 | EP0914711A1 Power amplifier |
| 05/12/1999 | EP0914710A1 Rf amplifier having adaptative predistortion circuit |