| 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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| 07/07/2005 | US20050145895 Amplifiers using gated diodes |
| 07/07/2005 | DE102004054319A1 Verarbeitungssystem für einen medizinischen Parameter Processing system for a medical parameters |
| 07/07/2005 | DE102004053467A1 Verfahren und Schaltung zum Detektieren eines Fehlers und zugehöriger Leistungsverstärker Method and circuit for detecting a fault and associated power amplifier |
| 07/06/2005 | EP1550279A2 Electromagnetic wave trasmitter systems, methods and articles of manufacture |
| 07/06/2005 | EP1550212A2 Variable gain amplifier with improved control characteristics linearity |
| 07/06/2005 | EP1550211A1 Method for the adaptive pre-distortion of digital raw data values and device for carrying out said method |
| 07/06/2005 | EP1550210A1 Capacitor coupled dynamic bias boosting circuit for a power amplifier |
| 07/06/2005 | EP1550209A1 Power amplifier and method for power amplification |
| 07/06/2005 | EP1550208A1 Apparatus, methods and articles of manufacture for electromagnetic processing |
| 07/06/2005 | EP1550207A2 Apparatus, methods and articles of manufacture for multiband signal processing |
| 07/06/2005 | EP1550206A1 Power amplifier efficiency |
| 07/06/2005 | EP1384317B1 A signal processing circuit |
| 07/06/2005 | EP1149467B1 Amplifier |
| 07/06/2005 | CN2708562Y Vacuum processing apparatus for wireless microphone |
| 07/06/2005 | CN1636317A Variable gain amplifier with autobiasing supply regulation |
| 07/06/2005 | CN1636316A Dynamic bias controller for power amplifier circuits |
| 07/06/2005 | CN1636315A Current modulator with dynamic amplifier impedance compensation |
| 07/06/2005 | CN1636314A Methods of optimising power amplifier efficiency and closed-loop power amplifier controllers |
| 07/06/2005 | CN1635704A Power amplification module |
| 07/06/2005 | CN1635703A High power microwave power amplifier high-voltage pulse power supply |
| 07/06/2005 | CN1209883C System and method for dynamically adjusting working bias of RF power amplifiers |
| 07/05/2005 | US6915118 Linear compensated amplifying equipment |
| 07/05/2005 | US6914488 Broadband amplification apparatus for bandwidth expansion |
| 07/05/2005 | US6914487 Method and system for providing power management in a radio frequency power amplifier using adaptive envelope tracking |
| 07/05/2005 | US6914486 System and method for improved bias matching |
| 07/05/2005 | US6914485 High voltage supply sensing high input resistance operational amplifier input stage |
| 07/05/2005 | US6914484 Wideband constant-gain voltage amplifier |
| 07/05/2005 | US6914483 High-frequency amplifier circuit |
| 07/05/2005 | US6914481 High frequency power amplifier apparatus and power amplifier module use the same |
| 07/05/2005 | US6914480 High frequency power amplifier and wireless communication module |
| 07/05/2005 | US6913006 High-frequency ignition system for an internal combustion engine |
| 07/05/2005 | CA2273151C Efficient parallel-stage power amplifier |
| 06/30/2005 | WO2005060114A1 Activation signal output circuit |
| 06/30/2005 | WO2005060090A1 A power amplifier module and a time division multiple access radio |
| 06/30/2005 | WO2005025053A3 Dual mode multi-slot egprs transmitter |
| 06/30/2005 | WO2004070562A3 System and method for notification and escalation of medical data alerts |
| 06/30/2005 | US20050143933 Analyzing and correcting biological assay data using a signal allocation model |
| 06/30/2005 | US20050141732 Amplifying apparatus |
| 06/30/2005 | US20050141640 Amplifying apparatus |
| 06/30/2005 | US20050141639 Power booster using peak suppression and pre-distortion for terminal radios |
| 06/30/2005 | US20050141637 Powers amplifiers |
| 06/30/2005 | US20050140456 Variable-gain cascode amplifier using voltage-controlled and variable inductive load |
| 06/30/2005 | US20050140455 Power amplifying module |
| 06/30/2005 | US20050140452 Protection circuit for power amplifier |
| 06/30/2005 | US20050140449 Use of analog-valued floating-gate transistors for parallel and serial signal processing |
| 06/30/2005 | US20050140448 Use of analog-valued floating-gate transistors for parallel and serial signal processing |
| 06/30/2005 | US20050140444 Differential amplifier |
| 06/30/2005 | US20050140440 Electronic amplifier circuit |
| 06/30/2005 | US20050140439 Predistortion linearizer for power amplifier |
| 06/30/2005 | US20050140438 Fast LUT predistorter for power amplifier |
| 06/30/2005 | US20050140437 Bias system and method |
| 06/30/2005 | US20050140435 R F output power control |
| 06/30/2005 | US20050140432 Supplying a ramp voltage to an amplifier |
| 06/30/2005 | US20050140422 Switched capacitor circuit compensation apparatus and method |
| 06/30/2005 | US20050140412 Interpolation delay cell for 2ps resolution jitter injector in optical link transceiver |
| 06/30/2005 | DE10353340A1 Circuit structure for making a bias voltage available has a resistor and a second transistor wired between a control input and a connection for a controlled route in a first transistor |
| 06/29/2005 | EP1548949A1 Transmitting method and transmitter apparatus |
| 06/29/2005 | EP1548934A1 Fully differential push-pull amplifier |
| 06/29/2005 | EP1548933A1 Method of preventing abrupt voltage changes at the outputs of a pair of amplifiers and control circuit for a pair of amplifiers self-configuring in a bridge configuration |
| 06/29/2005 | EP1548931A1 Protection circuit for power amplifier |
| 06/29/2005 | EP1548930A1 Electronic circuit and method for predistorting a signal to be amplified |
| 06/29/2005 | EP1548929A1 Digital detector utilizable in providing closed-loop gain control in a transmitter |
| 06/29/2005 | EP1548928A1 High-frequency power amplifier |
| 06/29/2005 | EP1548536A1 Metal-oxide-semiconductor device having integrated bias circuit |
| 06/29/2005 | EP1547394A2 Packaged rf power transistor having rf bypassing/output matching network |
| 06/29/2005 | EP1547278A1 Signal, interference and noise power measurement |
| 06/29/2005 | EP1547246A2 Integrated circuit with automatic polarity detection and configuration |
| 06/29/2005 | EP1547240A1 Dual mode power amplifier having a common controller |
| 06/29/2005 | CN1633746A High-frequency amplifier circuit having a directly-connected bias circuit |
| 06/29/2005 | CN1208755C Wide-band back read using for data storage magnetoresistance head |
| 06/28/2005 | US6912475 System for three dimensional positioning and tracking |
| 06/28/2005 | US6912377 Leak power ratio detection circuit, mobile communication terminal, and control circuit for mobile communication terminal |
| 06/28/2005 | US6911925 Linearity compensation by harmonic cancellation |
| 06/28/2005 | US6911867 Error amplifier and DC-DC converter and the method thereof |
| 06/28/2005 | US6911866 Method and device for switch-on current limiting in push-pull amplifying power stages |
| 06/28/2005 | US6911864 Circuit, including feedback, for reducing DC-offset and noise produced by an amplifier |
| 06/28/2005 | CA2221685C A cartesian loop transmitter |
| 06/28/2005 | CA2202464C Am-fm transmitter power amplifier using class-bc |
| 06/23/2005 | WO2005057781A1 Compensating for load pull in electromagnetic signal propagation using adaptive impedance matching |
| 06/23/2005 | WO2005057780A1 Amplifier and communication apparatus |
| 06/23/2005 | WO2005057779A1 Eer modulator with power amplifier having feedback loop providing soft output impedance |
| 06/23/2005 | WO2005017942A3 High-frequency excitation system comprising a limiting circuit |
| 06/23/2005 | WO2004082322A3 Apparatus and method of limiting power applied to a loudspeaker |
| 06/23/2005 | US20050137834 System and method of estimating synchronous generator parameters |
| 06/23/2005 | US20050136865 Power amplifier with digital power control and associated methods |
| 06/23/2005 | US20050136864 Radio frequency modulator and methods thereof |
| 06/23/2005 | US20050136847 Communication semiconductor integrated circuit device and electrical apparatus |
| 06/23/2005 | US20050135506 Digital detector utilizable in providing closed-loop gain control in a transmitter |
| 06/23/2005 | US20050134409 Chua's circuit and it's use in hyperchaotic circuit |
| 06/23/2005 | US20050134390 Bias circuit for high frequency amplifiers |
| 06/23/2005 | US20050134389 DC-coupled multi-stage amplifier using all-pass resistive/capacitive network for level shifting |
| 06/23/2005 | US20050134388 Apparatus, methods and articles of manufacture for a dual mode amplifier |
| 06/23/2005 | US20050134385 Continuous variable-gain low-noise amplifier |
| 06/23/2005 | US20050134384 Amplification device with a bias circuit |
| 06/23/2005 | US20050134379 Multi-port cross-connected multi-level cascode differential amplifier |
| 06/23/2005 | US20050134378 Input structure for a power amplifier and associated methods |
| 06/23/2005 | US20050134377 Doherty amplifier |
| 06/23/2005 | US20050134376 Circuit and method of establishing DC bias levels in an RF power amplifier |
| 06/23/2005 | US20050134375 Circuit and method of reducing noise in an RF power amplifier |
| 06/23/2005 | US20050134374 Mixed-mode (current-voltage) audio amplifier |