| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
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| 05/19/2004 | EP1420511A1 Phase detector for extended linear response and highspeed data regeneration |
| 05/19/2004 | EP1419574A2 Power amplifier control |
| 05/19/2004 | DE10318629A1 Pegelbestimmungsschaltung zum Bestimmen eines Logikpegels eines Eingangssignals Level determination circuit for determining a logic level of an input signal |
| 05/19/2004 | DE10249695B3 Passive infra red beam sensor with depletion layer FET and self-conducting MOSFET, is connected to second similar transistor |
| 05/19/2004 | DE10246776A1 Broadband signal amplifier especially for XDSL signals has potential node connected through a resistance to a reference node with constant potential |
| 05/19/2004 | DE10233220B3 Komparator mit Hysterese Comparator with hysteresis |
| 05/19/2004 | CN1497996A High-frequency power amplifying electric unit and radio communication system |
| 05/19/2004 | CN1497854A Analogue/digital conversion circuit of multistage pipeline type with regulating input signal |
| 05/19/2004 | CN1497840A Buffer circuit and driver IC |
| 05/19/2004 | CN1497839A D类放大器 Class D Amplifier |
| 05/19/2004 | CN1497838A Power amplifying circuit and method for supplying power by multiple required power output level |
| 05/19/2004 | CN1150799C High-fidelity and high-efficiency analog amplifier combined with digital amplifier |
| 05/19/2004 | CN1150672C Transconductor with controllable transconductance for low supply voltages |
| 05/19/2004 | CN1150671C Reglating method and circuit for power amplifying circuit using drain as output stage |
| 05/18/2004 | US6738605 Method for optimizing an operating point of a power amplifier in a WCDMA mobile terminal |
| 05/18/2004 | US6738302 Optimized read data amplifier and method for operating the same in conjunction with integrated circuit devices incorporating memory arrays |
| 05/18/2004 | US6737973 Amplifier modulation |
| 05/18/2004 | US6737948 Distributed circular geometry power amplifier architecture |
| 05/18/2004 | US6737930 Tunable planar capacitor |
| 05/18/2004 | US6737924 Differential, double feedback CMOS transimpedance amplifier with noise tolerance |
| 05/18/2004 | US6737923 High frequency circuit |
| 05/18/2004 | US6737922 N-way RF power amplifier circuit with increased back-off capability and power added efficiency using unequal input power division |
| 05/18/2004 | US6737921 Distributed amplifier and differential distributed amplifier |
| 05/18/2004 | US6737920 Variable gain amplifier |
| 05/18/2004 | US6737917 Digital power amplifier |
| 05/18/2004 | US6737916 RF amplifier system having improved power supply |
| 05/18/2004 | US6737914 Removing effects of gain and phase mismatch in a linear amplification with nonlinear components (LINC) system |
| 05/18/2004 | US6737913 Differential mode circuitry and method of calibrating same without matched external current sources |
| 05/18/2004 | US6737623 Photo-detecting semiconductor device and an apparatus having such a photo-detecting semiconductor device |
| 05/13/2004 | WO2004040924A1 Method and apparatus for tailoring carrier power requirements according to availability in layered modulation systems |
| 05/13/2004 | WO2004040806A1 Amplitude and phase matching for layered modulation reception |
| 05/13/2004 | WO2004040755A1 Filter circuit and radio device |
| 05/13/2004 | WO2004040754A1 Differential circuit and receiver with same |
| 05/13/2004 | WO2004040753A1 Fully differential two-stage operational amplifier having common mode voltage regulation |
| 05/13/2004 | WO2004040752A1 Digital audio amplifier capable of increasing self-oscillation frequency and reducing the number of component |
| 05/13/2004 | WO2004040403A2 Lower complexity layered modulation signal processor |
| 05/13/2004 | WO2004040357A2 Power management for spatial power combiners |
| 05/13/2004 | WO2004030207A3 Variable gain amplifier |
| 05/13/2004 | WO2004010576A9 Multi-standard amplifier |
| 05/13/2004 | WO2003063339A3 A high performance bifet low noise amplifier |
| 05/13/2004 | WO2003061124A3 Differential inverter circuit |
| 05/13/2004 | WO2002069486A9 Stability enhanced multistage power amplifier |
| 05/13/2004 | US20040092236 Semiconductor integrated circuit device and wireless communication system |
| 05/13/2004 | US20040090279 Semiconductor device |
| 05/13/2004 | US20040090272 High isolation/high speed buffer amplifier |
| 05/13/2004 | US20040090271 Variable gain amplifier for high frequency band using microstrip hybrid |
| 05/13/2004 | US20040090270 Apparatus and method for indicating a difference between first and second voltage signals |
| 05/13/2004 | US20040090269 Variable gain current amplifier with a feedback loop including a diffrential pair |
| 05/13/2004 | US20040090268 Amplifier gain boost circuitry and method |
| 05/13/2004 | US20040090267 High-frequency power amplification electronic part and wireless communication system |
| 05/13/2004 | US20040090266 High frequency power amplifier apparatus and power amplifier module use the same |
| 05/13/2004 | US20040090265 Failsafe differential amplifier circuit |
| 05/13/2004 | US20040090264 Linearization of a pdm class-d amplifier |
| 05/13/2004 | US20040090246 Method and apparatus for amplifying a regulated differential signal to a higher voltage |
| 05/13/2004 | DE10345691A1 Integrierte Schaltung Integrated circuit |
| 05/13/2004 | DE10249835A1 Voll differentieller zweistufiger Operationsverstärker mit Gleichtaktspannungsregelung Fully differential two-stage operational amplifier with common-mode voltage regulation |
| 05/13/2004 | DE10248149A1 Drive circuit for driving useful signal with frequency-stabilized signal feedback has feedback stage for frequency-dependent signal feedback of each useful signal amplified by amplification stage |
| 05/13/2004 | DE10224747B4 Sensorschaltung und Verfahren zur Herstellung derselben Sensor circuit and method for manufacturing the same |
| 05/12/2004 | EP1418678A2 Front-end module and communication terminal |
| 05/12/2004 | EP1418669A2 Semiconductor integrated circuit device and wireless communication system |
| 05/12/2004 | EP1418668A1 High isolation/high speed buffer amplifier |
| 05/12/2004 | EP1418667A1 Multi-level class-D amplifier by means of 3 physical levels |
| 05/12/2004 | EP1418666A1 Adaptive delay driver for class-D amplifier |
| 05/12/2004 | EP1417757A1 Systems and methods for pulse width modulation |
| 05/12/2004 | EP1417753A1 Auto-zeroed ping-pong amplifier with low transient switching |
| 05/12/2004 | EP1417752A2 High-bandwidth low-voltage gain cell and voltage follower having an enhanced transconductance |
| 05/12/2004 | EP1417751A1 Voltage/current conversion circuit arrangement |
| 05/12/2004 | EP1269655B1 Dynamic bias for rf power amplifiers |
| 05/12/2004 | CN1496606A Distributed amplifier with transistors having negative feedback |
| 05/12/2004 | CN1496605A Distributed circular geometry power amplifier architecture |
| 05/12/2004 | CN1496188A Multichannel pulsewidth modulator |
| 05/12/2004 | CN1496018A Radio communication device |
| 05/12/2004 | CN1496001A Duty ratio detection equipment whose return time is short |
| 05/12/2004 | CN1495995A Differential curcuit and amplifying circuit and display using said amplifying circuit |
| 05/12/2004 | CN1495994A Power dividing/merging circuit, high power amplifier and balanced-to-unbalanced transformer circuit |
| 05/12/2004 | CN1495901A Power amplifier with base stripe and collector stripe |
| 05/12/2004 | CN1149702C Filter with low-noise amplifier |
| 05/11/2004 | US6735302 DSP based SLIC architecture with current-sensing voltage synthesis impedance matching and DC feed control |
| 05/11/2004 | US6734746 Mute circuit |
| 05/11/2004 | US6734737 Output distortion correction amplifier system |
| 05/11/2004 | US6734736 Low power variable gain amplifier |
| 05/11/2004 | US6734734 Amplifier phase droop and phase noise systems and methods |
| 05/11/2004 | US6734732 Adaptive linearizer for RF power amplifiers |
| 05/11/2004 | US6734730 Variable gain amplifier |
| 05/11/2004 | US6734728 RF power transistor with internal bias feed |
| 05/11/2004 | US6734726 Balanced distortion reduction circuit |
| 05/11/2004 | US6734725 Power amplifier |
| 05/11/2004 | US6734724 Power control and modulation of switched-mode power amplifiers with one or more stages |
| 05/11/2004 | US6734723 Chopper chopper-stabilized operational amplifiers and methods |
| 05/11/2004 | US6734722 Method for reducing area in continuous-time filter for low frequency applications |
| 05/11/2004 | US6734721 Method and apparatus for affecting speed of transition of a closed loop circuit |
| 05/11/2004 | US6734720 Operational amplifier in which the idle current of its output push-pull transistors is substantially zero |
| 05/11/2004 | US6734712 Logarithmic amplifier |
| 05/06/2004 | WO2004038911A1 Power combiner |
| 05/06/2004 | WO2004038910A2 Predistortion linearizing |
| 05/06/2004 | WO2003084057A3 Method of measuring microwave power and device for carrying out said method |
| 05/06/2004 | WO2003061277A3 Charge or particle sensing |
| 05/06/2004 | US20040088064 Backup system for multi-source audio apparatus |
| 05/06/2004 | US20040087297 Frequency agile RF circuit |
| 05/06/2004 | US20040085871 Disk drive and error amplifier therefor and related methods |