| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
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| 04/21/2005 | US20050083124 Rail-to-rail-input buffer |
| 04/21/2005 | US20050083123 High efficiency rf power amplifier |
| 04/21/2005 | US20050083122 Efficient broadband switching-mode amplifier |
| 04/21/2005 | US20050083119 Amplifier circuit |
| 04/21/2005 | US20050083118 Rf amplifier |
| 04/21/2005 | US20050083116 Detection of DC output levels from a class D amplifier |
| 04/21/2005 | US20050083115 Soft transitions between muted and unmuted states in class D audio amplifiers |
| 04/21/2005 | US20050083114 Recovery from clipping events in a class D amplifier |
| 04/21/2005 | US20050083113 Class d electroacoustic amplifier and method for compensation of power supply voltage influence on output audio signal in class d electroacoustic amplifier |
| 04/21/2005 | US20050083102 Semiconductor device |
| 04/21/2005 | US20050083101 Small-amplitude differential interface circuit |
| 04/21/2005 | US20050083031 Semiconductor integrated circuit device enabling to produce a stable constant current even on a low power-source voltage |
| 04/21/2005 | US20050083030 Band-gap type constant voltage generating circuit |
| 04/21/2005 | US20050082612 Semiconductor integrated circuit device and sense amplifier of memory |
| 04/21/2005 | DE10114935B4 Monolithisch integrierter Hochspannungsverstärker Monolithic integrated high voltage amplifier |
| 04/20/2005 | EP1524769A2 Current switch circuit, amplifier, and mobile terminal |
| 04/20/2005 | EP1524764A1 Power amplifier having enhanced swing cascode architecture |
| 04/20/2005 | EP1524008A1 Implantable cardiac stimulation device providing arbitrarily shaped defibrillation waveforms |
| 04/20/2005 | EP1523804A2 Variable gain amplifier with autobiasing supply regulation |
| 04/20/2005 | EP1523703A1 Band-gap reference circuit |
| 04/20/2005 | CN2694614Y Type A audio power amplifier |
| 04/20/2005 | CN1608344A Amplifier switch |
| 04/20/2005 | CN1608343A Attenuation control for digital power converters |
| 04/20/2005 | CN1608272A 乘法器 Multiplier |
| 04/20/2005 | CN1607730A Small-amplitude differential interface circuit |
| 04/20/2005 | CN1607728A Method and apparatus for transformation from impulse code modulation to impulse-width modulation |
| 04/20/2005 | CN1607724A Class AB rail-to-rail operational amplifier |
| 04/20/2005 | CN1607723A Power supply controlling apparatus of power amplifiers |
| 04/20/2005 | CN1607722A Architecture and implementation methods of digital predistortion circuitry |
| 04/20/2005 | CN1607721A Sound signal generating apparatus and method for reducing pop noise |
| 04/20/2005 | CN1607564A Differential ab class amplifier circuit and drive circuit using the same |
| 04/20/2005 | CN1198393C DC bias compensating circuit, difference amplifying circuit and photoelectric pulse converting circuit |
| 04/20/2005 | CN1198387C Constant-voltage circuit and infrared telecontrol receiver using said constant-voltage circuit |
| 04/20/2005 | CN1198386C Electronic tuner |
| 04/20/2005 | CN1198385C System and method for producing amplifying signals |
| 04/20/2005 | CN1198336C Semiconductor integrated circuit |
| 04/19/2005 | US6882582 EEPROM circuit voltage reference circuit and method for providing a low temperature-coefficient voltage reference |
| 04/19/2005 | US6882236 Dynamically tuned amplifier for frequency shift keyed signals |
| 04/19/2005 | US6882228 Radio frequency integrated circuit having an antenna diversity structure |
| 04/19/2005 | US6882227 Bias circuit linearization and dynamic power control |
| 04/19/2005 | US6882225 Multi-stage power amplifier for audio frequencies |
| 04/19/2005 | US6882223 Multi-band low noise amplifier |
| 04/19/2005 | US6882222 Low pass filter for output of D-class amplifier |
| 04/19/2005 | US6882220 Integrated power amplifier circuit |
| 04/19/2005 | US6882219 High frequency switch-mode power amplifier |
| 04/19/2005 | US6882218 Transimpedance amplifier and offset correction mechanism and method for lowering noise |
| 04/19/2005 | US6882212 Method and apparatus for extending the size of a transistor beyond one integrated circuit |
| 04/19/2005 | US6882207 Offset control circuit |
| 04/19/2005 | US6882185 Exponential current generator and method |
| 04/19/2005 | US6882183 Multi-level output circuit |
| 04/19/2005 | US6881639 Method of manufacturing semiconductor device |
| 04/14/2005 | WO2005034341A1 Power amplifier and method for split voice coil transducer or speaker |
| 04/14/2005 | WO2005034338A2 Method for aligning feed forward loops |
| 04/14/2005 | WO2005033820A1 Method and apparatus for compensating for temperature drift in semiconductor processes and circuitry |
| 04/14/2005 | WO2004040357A3 Power management for spatial power combiners |
| 04/14/2005 | US20050079851 Module integration integrated circuits |
| 04/14/2005 | US20050079836 Power amplifier having enhanced swing cascode architecture |
| 04/14/2005 | US20050078966 Identification level control method and optical receiver |
| 04/14/2005 | US20050078848 Power amplifier and method for split voice coil transducer or speaker |
| 04/14/2005 | US20050078841 Method and apparatus for resetting a buffer amplifier |
| 04/14/2005 | US20050077966 Method and apparatus for realizing a low noise amplifier |
| 04/14/2005 | US20050077965 Power amplifier having low gate oxide stress |
| 04/14/2005 | US20050077964 High-frequency power amplifier |
| 04/14/2005 | US20050077962 Interface circuit for connecting to an output of a frequency converter |
| 04/14/2005 | US20050077961 Class AB rail-to-rail operational amplifier |
| 04/14/2005 | US20050077958 Amplifier with capacitor selection |
| 04/14/2005 | US20050077957 Operational amplifier, line driver, and liquid crystal display device |
| 04/14/2005 | US20050077956 Integrated circuit |
| 04/14/2005 | US20050077953 Input/output circuit, reference-voltage generating circuit, and semiconductor integrated circuit |
| 04/14/2005 | US20050077944 Linear buffer |
| 04/14/2005 | US20050077925 Dc cancellation apparatus and method |
| 04/14/2005 | DE10338334A1 Noise compensation in communication systems uses a diode ring arrangement to separate noise and signal |
| 04/14/2005 | CA2541767A1 Power amplifier and method for split voice coil transducer or speaker |
| 04/14/2005 | CA2540127A1 Method for aligning feed forward loops |
| 04/13/2005 | EP1523103A1 Coherent averaging for measuring traveling wave tube amplifier nonlinearity |
| 04/13/2005 | EP1523095A1 Audio output circuit |
| 04/13/2005 | EP1523094A1 Automatically adjusting low noise amplifier |
| 04/13/2005 | EP1522142A2 Amplifying circuit with adjustable amplification and transmitter system comprising such an amplifying circuit |
| 04/13/2005 | EP1522100A1 Integrated circuit arrangement |
| 04/13/2005 | CN2692918Y Composite feedback power amplifier |
| 04/13/2005 | CN1606828A Synchronized controlled oscillation modulator |
| 04/13/2005 | CN1606827A Offset calibration system and method for a high gain signal channel |
| 04/13/2005 | CN1606236A DC offset cancellation circuit, differential amplification circuit, photo-electric pulse conversion circuit |
| 04/13/2005 | CN1197237C Metallic oxide semiconductor transistor amplifying circuit controlled by electric current |
| 04/13/2005 | CN1197081C Data memory device |
| 04/12/2005 | US6879534 Method and system for minimizing differential amplifier power supply sensitivity |
| 04/12/2005 | US6879220 Switchless combining of multi-carrier coherent and incoherent carriers |
| 04/12/2005 | US6879217 Triode region MOSFET current source to bias a transimpedance amplifier |
| 04/12/2005 | US6879215 Synthetic circuit component and amplifier applications |
| 04/12/2005 | US6879213 Rail to rail class AB output for an amplifier |
| 04/12/2005 | US6879212 Operational amplifier having large output current with low supply voltage |
| 04/12/2005 | US6879209 Switched-mode power amplifier using lumped element impedance inverter for parallel combining |
| 04/12/2005 | US6879205 Process for controlling the impedance of an output amplification semiconductor device and corresponding output amplifying device |
| 04/12/2005 | US6879204 Exponential conversion circuit |
| 04/12/2005 | US6879197 Apparatus for generating driving voltage for sense amplifier in a memory device |
| 04/12/2005 | CA2296980C Pulsed power amplifier apparatus including infinitely variable output level over a wide dynamic range |
| 04/07/2005 | WO2005031977A2 Phase conjugation circuit |
| 04/07/2005 | WO2005031969A1 Bypass switch topology for low-noise amplifiers |
| 04/07/2005 | WO2005031968A1 Input/output signals preserver circuit of amplification circuits |
| 04/07/2005 | WO2005031967A1 Doherty power amplifying apparatus |