| 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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| 06/21/2007 | DE19725459B4 Von externer Spannung unabhängiger Sperrvorspannungspegeldetektor Of external voltage independent Sperrvorspannungspegeldetektor |
| 06/20/2007 | EP1798856A1 Power amplifier with bypass path |
| 06/20/2007 | EP1798855A2 Class D Amplifier |
| 06/20/2007 | EP1798854A1 Enhanced low noise amplifier |
| 06/20/2007 | EP1798853A1 Predistortion system and amplifier for compensating for group delay modulation |
| 06/20/2007 | EP1798852A2 Distortion compensation |
| 06/20/2007 | EP1797647A1 Signal configuration based transmitter adjustment in wireless communication devices |
| 06/20/2007 | EP1797639A1 Arbitrary waveform predistortion table generation |
| 06/20/2007 | EP1797638A1 Polar loop circuit arrangement with distortion suppression and method for distortion suppression in a polar loop circuit arrangement |
| 06/20/2007 | EP1502362A4 System and method for eliminating signal zero crossings in single and multiple channel communication systems |
| 06/20/2007 | CN1985442A Digital linearizing system |
| 06/20/2007 | CN1985438A Plop noise avoidance for an amplifier |
| 06/20/2007 | CN1983803A D类放大器 Class D Amplifier |
| 06/20/2007 | CN1983801A Predistortion system and amplifier for compensating for group delay modulation |
| 06/20/2007 | CN1322669C Optimized design method of microwave amplifying circuit |
| 06/19/2007 | US7233466 Input protection circuit |
| 06/19/2007 | US7233204 Method of acquiring low distortion and high linear characteristic in triode-typed transconductor |
| 06/19/2007 | US7233199 Circuit and method of establishing DC bias levels in an RF power amplifier |
| 06/19/2007 | US7233198 Phase corrected miller compensation of chopper and nested chopper amplifiers |
| 06/19/2007 | US7233175 Amplitude limiting circuit |
| 06/14/2007 | WO2007020404A9 Feedback controller for pwm amplifier |
| 06/14/2007 | WO2005107063A8 Bypass circuit |
| 06/14/2007 | US20070133819 Method for establishing the separation signals relating to sources based on a signal from the mix of those signals |
| 06/14/2007 | US20070133713 Power amplifier pre-distorter training |
| 06/14/2007 | US20070132510 Preserving linearity of an isolator-free power amplifier by dynamically switching active devices |
| 06/14/2007 | US20070131078 Real-time digital phase and gain adaptation method using feedback and arrangement using such a method |
| 06/13/2007 | EP1796264A1 Modified doherty amplifier |
| 06/13/2007 | EP1794880A1 Peak voltage protection circuit and method |
| 06/13/2007 | EP1794879A1 Tunable predistorter |
| 06/13/2007 | EP1794878A1 Gate bias generator |
| 06/13/2007 | EP1794877A1 High efficiency variable voltage supply |
| 06/13/2007 | EP1384285B1 Ferroelectric antenna and method for tuning same |
| 06/13/2007 | CN1981432A Current-mode instrumentation amplifier gain error correction circuitry |
| 06/13/2007 | CN1981430A Power source and method for controlling operational power |
| 06/13/2007 | CN1321496C Amplifier having fixed input impedance and related method |
| 06/13/2007 | CN1321458C Circuit for generating a reference voltage having low temperature dependency |
| 06/12/2007 | US7231193 Direct current offset correction systems and methods |
| 06/12/2007 | US7231191 Spurious ratio control circuit for use with feed-forward linear amplifiers |
| 06/12/2007 | US7230493 Bias circuit with threshold voltage change compensation function and temperature change compensation function |
| 06/12/2007 | US7230489 System and apparatus for receiver equalization |
| 06/12/2007 | US7230483 Negative feedback system with an error compensation scheme |
| 06/12/2007 | US7230482 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 |
| 06/12/2007 | US7230481 System and method for reducing audible artifacts in an audio system |
| 06/12/2007 | US7230479 Technique to improve the gain and signal to noise ratio in CMOS switched capacitor amplifiers |
| 06/07/2007 | WO2007064403A1 Small signal amplifier with large signal output boost stage |
| 06/07/2007 | WO2007064201A1 Amplifier with compensated gate bias |
| 06/07/2007 | WO2007064024A1 Signal output circuit, communication apparatus and signal output control method |
| 06/07/2007 | WO2007064007A1 Signal processor for use with a power amplifier in a wireless circuit |
| 06/07/2007 | WO2007063490A1 Full-bridge class-d power amplifier |
| 06/07/2007 | WO2007062686A1 Thermal protection circuit for an crt amplifier |
| 06/07/2007 | WO2006053034A3 Method and apparatus for opening a feedback loop |
| 06/07/2007 | US20070129028 Radio-frequency circuit realizing stable operation |
| 06/07/2007 | US20070127743 Electronic Apparatus Having Audio Output Units |
| 06/07/2007 | US20070126501 Variable gain amplifier and variable gain amplifier module |
| 06/07/2007 | US20070126499 Multi-phase techniques for tuning and/or measuring operations of an amplifier |
| 06/07/2007 | CA2631801A1 Amplifier with compensated gate bias |
| 06/06/2007 | EP1793492A1 Power amplifier |
| 06/06/2007 | EP1793491A1 Amplifier with compensated gate bias voltage |
| 06/06/2007 | EP1793490A1 Doherty power amplifier with improved efficiency |
| 06/06/2007 | EP1792395A1 Tunable cascode lna with flat gain response over a wide frequency range |
| 06/06/2007 | EP1792367A2 Blind signal separation using i and q components |
| 06/06/2007 | EP1792366A2 Blind signal separation using array deflection |
| 06/06/2007 | EP1792197A2 Blind signal separation using spreading codes |
| 06/06/2007 | EP1543612A4 Power supply based audio compression for digital audio amplifier |
| 06/06/2007 | EP0760165B1 Electronic device comprising means for compensating an undesired capacitance |
| 06/06/2007 | DE102005058039A1 Schaltungsanordnung und Verfahren zur Verstärkung eines elektrischen Eingangssignals Circuit arrangement and method for amplifying an electrical input signal |
| 06/06/2007 | CN1977459A Transmission apparatus, communication apparatus and mobile radio apparatus |
| 06/06/2007 | CN1977447A Integrated doherty type amplifier arrangement with high power efficiency |
| 06/06/2007 | CN1976218A Low voltage low power class A/B output stage |
| 06/06/2007 | CN1976217A Power amplifier with high gain and high efficiency |
| 06/06/2007 | CN1320777C Apparatus and method of transmission power amplifier bias control in mobile communication device |
| 06/06/2007 | CN1320772C Multi-frequency band low-noise amplifier |
| 06/06/2007 | CN1320746C Low-energy zone gap reference voltage circuit |
| 06/05/2007 | US7227959 Multi-channel digital feedback reducer system |
| 06/05/2007 | US7227419 Power distribution and biasing in RF switch-mode power amplifiers |
| 06/05/2007 | US7227418 Power amplifier |
| 06/05/2007 | US7227415 High frequency power amplifier circuit and radio communication system |
| 06/05/2007 | US7227414 Apparatus for receiver equalization |
| 06/05/2007 | US7227413 Audio amplification device with antipop circuitry |
| 05/31/2007 | WO2007061416A1 Joint optimization of linear pre-filtering and nonlinear vector perturbation for mimo multiuser precoding |
| 05/31/2007 | WO2007060676A1 Method and apparatus for reducing current consumption of mimo systems |
| 05/31/2007 | WO2007060675A1 Method and apparatus for optimizing current consumption of amplifiers with power control |
| 05/31/2007 | WO2007060562A1 Polar modulation system |
| 05/31/2007 | WO2007043122A9 Variable gain amplifier and its control method |
| 05/31/2007 | US20070124116 System and method for metadata verification during measurement processing |
| 05/31/2007 | US20070120617 Modulation apparatus and modulation method |
| 05/31/2007 | US20070120597 Amplifying circuit |
| 05/31/2007 | US20070120595 Increasing the common mode range of a circuit |
| 05/31/2007 | DE102005055426A1 Schaltungsanordnung mit einem rückgekoppelten, voll-differentiellen Operationsverstärker Circuit with a feedback, fully-differential operational amplifier |
| 05/30/2007 | EP1791310A1 Distortion compensating apparatus |
| 05/30/2007 | EP1791253A2 Stabilization circuit and multiband amplification circuit |
| 05/30/2007 | EP1552605A4 Forward amplifiers |
| 05/30/2007 | CN2907090Y Multi-carrier signal generation device |
| 05/30/2007 | CN2907089Y Multi-carrier wave chopping device |
| 05/30/2007 | CN1973433A Amplifier circuit, semiconductor device and electronic apparatus |
| 05/30/2007 | CN1972119A Stabilization circuit and multiband amplification circuit |
| 05/30/2007 | CN1972118A High-linear high-gain broadband radio frequency low-noise amplifier |
| 05/30/2007 | CN1319279C Low noise block down converter with reduced power consumption |
| 05/30/2007 | CN1319269C 转换功率放大器 Conversion PA |
| 05/29/2007 | US7224229 Electronic signal amplifier and method and article for determining the gain of such an amplifier |