| 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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| 06/21/2000 | EP0914711B1 Power amplifier |
| 06/21/2000 | CN1257622A Power interface circuit for a TDMA transmitter |
| 06/21/2000 | CN1257343A Low-noise and low distortion D type amplifier |
| 06/20/2000 | US6078222 Controller-based radio frequency amplifier module and method |
| 06/20/2000 | US6078216 Aliased wide band performance monitor for adjusting predistortion and vector modulator control parameters of RF amplifier |
| 06/20/2000 | US6078169 Amplifier for interpolating the power supply from multiple supply voltages |
| 06/15/2000 | WO2000035086A1 Impedance matching networks for non-linear circuits |
| 06/15/2000 | WO2000035082A1 Device for amplifying signals |
| 06/15/2000 | WO2000035081A1 Low noise resistively matched amplifier |
| 06/15/2000 | WO2000035080A1 Amplitude modulation to phase modulation cancellation method in an rf amplifier |
| 06/15/2000 | WO2000035079A1 An amplifier |
| 06/14/2000 | CA2286924A1 Amplifier arrangement with voltage gain and reduced power consumption |
| 06/13/2000 | US6075995 Amplifier module with two power amplifiers for dual band cellular phones |
| 06/13/2000 | US6075412 Linearization for power amplifiers |
| 06/13/2000 | US6075411 Method and apparatus for wideband predistortion linearization |
| 06/08/2000 | WO2000033464A1 Improvements relating to phase lock loops |
| 06/08/2000 | WO2000033460A1 Class-ab output stages with improved distortion performance |
| 06/08/2000 | WO2000033459A1 Constant gain, constant phase rf power block |
| 06/08/2000 | WO2000033458A1 Receiver for rf signals |
| 06/08/2000 | DE19844741C1 Schaltungsanordnung zur Arbeitspunktstabilisierung eines Transistors Circuit arrangement for operating point stabilization of a transistor |
| 06/08/2000 | DE19827702C2 Verstärkerschaltung mit aktiver Arbeitspunkteinstellung Amplifier circuit with active bias setting |
| 06/08/2000 | CA2354066A1 Constant gain, constant phase rf power block |
| 06/07/2000 | EP1006650A2 BTL amplifier apparatus |
| 06/07/2000 | EP1006649A1 A broadband linearizer for power amplifiers |
| 06/07/2000 | EP1006648A2 Active compensating capacitive multiplier |
| 06/07/2000 | EP1006579A1 Device for compensating process and operating parameter variations in CMOS integrated circuits |
| 06/07/2000 | CN1255779A D-modulator with peak value current limit and loaded impedance detection circuit |
| 06/06/2000 | US6072995 Flexible current control in power amplifiers |
| 06/06/2000 | US6072676 Protection circuit for an excitation current source |
| 06/06/2000 | US6072376 Filter with low-noise amplifier |
| 06/06/2000 | US6072364 Adaptive digital predistortion for power amplifiers with real time modeling of memoryless complex gains |
| 06/06/2000 | US6072341 Driver circuit with pull down npn transistor and gain reduction |
| 06/02/2000 | WO2000031941A1 Method and apparatus for the determinaton of the predistortion parameters in a quadrature modulator, by measuring the output power |
| 06/02/2000 | WO2000031881A1 Linear rf power amplifier and transmitter |
| 06/02/2000 | WO2000007291A3 A method of attenuating zero crossing distortion and noise in an amplifier, an amplifier and uses of the method and the amplifier |
| 05/31/2000 | EP1004165A1 Active operating point regulation for power amplifiers |
| 05/31/2000 | EP0913024A4 Oscillator voltage regulator |
| 05/31/2000 | DE19937990A1 Integrated semiconductor circuit for electret microphone, has voltage converter and bias voltage circuits for voltage change by change of capacity |
| 05/31/2000 | CN1053070C Amplifying circuit with function of reducing load reactance influence |
| 05/30/2000 | US6069532 Technique for designing a bias circuit for an amplifier in an integrated circuit device |
| 05/30/2000 | US6069531 Feed forward amplifier improvement incorporating an automatic gain and phase controller |
| 05/30/2000 | US6069530 Apparatus and method for linear power amplification |
| 05/30/2000 | US6069527 Feed forward amplifier |
| 05/30/2000 | US6069525 Dual-mode amplifier with high efficiency and high linearity |
| 05/30/2000 | US6069523 Differential data driver |
| 05/30/2000 | CA2234335C High efficiency power amplifier |
| 05/25/2000 | WO2000030250A1 Circuit and method for linearizing amplitude modulation in a power amplifier |
| 05/25/2000 | WO2000030249A1 Circuit comprising means for reducing the dc-offset and the noise produced by an amplifier |
| 05/25/2000 | WO2000030248A1 Rf power amplifier linearization using parallel rf power amplifiers having intermod-complementing predistortion paths |
| 05/25/2000 | WO2000030247A1 Circuits for preventing unwanted output transients in amplifiers during power-up |
| 05/25/2000 | WO2000030246A1 Amplifier with stabilization means |
| 05/25/2000 | WO2000030245A1 Circuit and method for i/q modulation with independent, high efficiency amplitude modulation |
| 05/25/2000 | CA2351685A1 Circuit and method for i/q modulation with independent, high efficiency amplitude modulation |
| 05/24/2000 | EP1003281A2 Multi-input differential amplifier circuit |
| 05/24/2000 | EP1003280A2 Class D amplifier with current limit circuit and load impedance sensing circuit |
| 05/24/2000 | EP1003279A2 A low noise low distortion class D amplifier |
| 05/24/2000 | EP1003278A2 Nested feed forward distortion reduction system |
| 05/24/2000 | EP1003224A1 Analogue MISFET with threshold voltage adjuster |
| 05/24/2000 | EP1002363A1 Device for transforming into voltage signals weak electric currents impressed by a non-ideal electric current source at the inlet of same device |
| 05/24/2000 | CN1254453A Method and apparatus for efficient signal power amplification |
| 05/24/2000 | CN1254218A Nested feedforward distortion reducing system |
| 05/23/2000 | US6066993 Duplexer circuit apparatus provided with amplifier and impedance matching inductor |
| 05/23/2000 | US6066987 Differential cascode magneto-resistance preamplifier with bias bypass |
| 05/23/2000 | US6066984 Amplifier and amplifying method for amplifying a plurality of signals having different bands simultaneously |
| 05/23/2000 | US6066983 PCS multi-carrier linear power amplifier |
| 05/23/2000 | CA2019034C Fet comparator circuitry |
| 05/18/2000 | WO2000008870A3 Apparatus and method of linearizing a power amplifier in a mobile radio communication system |
| 05/17/2000 | EP1001529A1 Linear power amplifier arrangement and method for its operation |
| 05/17/2000 | EP1001525A1 Feed forward compensation using phase and time modulation |
| 05/17/2000 | EP1001524A1 Low cost, pilotless, feed forward compensation for a power amplifier |
| 05/17/2000 | EP1000464A1 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 |
| 05/17/2000 | CN1253460A Feedforward amplifier and method of amplifying signal |
| 05/17/2000 | CN1052604C Audio amplifier with transient tracking power supply |
| 05/16/2000 | US6064269 Power amplifier with variable input voltage source |
| 05/16/2000 | US6064264 Backgate switched power amplifier |
| 05/16/2000 | US6064260 RF amplifier network with a redundant power supply |
| 05/16/2000 | US6064258 Distributed gain line driver amplifier |
| 05/16/2000 | US6064257 Chopper-stabilized operational amplifier |
| 05/11/2000 | WO2000027038A2 Radio frequency transmitters |
| 05/11/2000 | WO2000027029A1 Device with common mode feedback for a differential output |
| 05/11/2000 | WO2000027028A1 Start-up circuit for self oscillating class d amplifier |
| 05/11/2000 | WO2000027027A1 Linear differential bipolar transconductor with current compensation |
| 05/11/2000 | WO2000019603B1 Apparatus and method for improving power control loop linearity |
| 05/10/2000 | EP0998823A2 Adaptive digital predistortion apparatus for linearizing a power amplifier for digital broadcasting |
| 05/10/2000 | EP0701747B1 D.c. bias current compensation circuit for a nonlinear amplifier |
| 05/10/2000 | CN1252905A Battery life extending technique for mobile wireless applications |
| 05/10/2000 | CN1252904A Power amplifier and method for controlling it |
| 05/10/2000 | CA2289128A1 Low cost, pilotless, feed forward compensation for a power amplifier |
| 05/09/2000 | US6060951 Semiconductor device |
| 05/09/2000 | US6060949 High efficiency switched gain power amplifier |
| 05/09/2000 | US6060870 Voltage-to-current converter with error correction |
| 05/09/2000 | CA2253090A1 Inverted super regenerative receiver |
| 05/04/2000 | WO2000025495A1 Method and apparatus for reducing distortion of digital data |
| 05/04/2000 | WO2000025421A1 Method and arrangement for correcting phase error in linearization loop of power amplifier |
| 05/04/2000 | CA2311821A1 Method and arrangement for correcting phase error in linearization loop of power amplifier |
| 05/03/2000 | EP0998088A2 Modulation with separate stages for phase and amplitude modulation |
| 05/03/2000 | EP0998030A1 Overcurrent sensing circuit and self adjusting protection |
| 05/03/2000 | EP0998028A1 Feedforward amplifier |
| 05/03/2000 | EP0998027A1 Amplification system using baseband mixer |
| 05/03/2000 | EP0998026A1 Multichannel amplification system using mask detection |