| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
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| 11/12/2008 | CN101303824A Source line driver and method and display device including the source line driver |
| 11/12/2008 | CN100433951C Inductor element containing circuit board and power amplifier module |
| 11/12/2008 | CN100433549C Apparatus and method for realizing linear switch power amplifying |
| 11/12/2008 | CN100433548C Power amplifier |
| 11/12/2008 | CN100433547C Power amplification device |
| 11/12/2008 | CN100433546C Digital signal processor enhanced pulse width modulation amplifier |
| 11/12/2008 | CN100433545C Full current excitation balance injection feedforward power amplifier |
| 11/12/2008 | CN100433145C Difference generating device and optical disk device using said device |
| 11/11/2008 | US7450995 Implantable cardiac stimulation device including an output circuit that provides arbitrarily shaped defibrillation waveforms |
| 11/11/2008 | US7450915 Smart transmitter system |
| 11/11/2008 | US7450912 Transmitter and transceiver |
| 11/11/2008 | US7450728 Parameter control method and program therefor, and parameter setting apparatus |
| 11/11/2008 | US7450099 Display apparatus and driving device for displaying |
| 11/11/2008 | US7449958 Open loop DC control for a transimpedance feedback amplifier |
| 11/11/2008 | US7449957 Radio frequency power amplifier |
| 11/11/2008 | US7449955 Chain-chopping current mirror and method for stabilizing output currents |
| 11/11/2008 | US7449953 Input buffer design using common-mode feedback (CMFB) |
| 11/11/2008 | US7449952 Amplifying circuit having a pull-up circuit and a pull-down circuit for increasing slew rate |
| 11/11/2008 | US7449951 Low voltage operational amplifier |
| 11/11/2008 | US7449950 Analog signal processing circuit |
| 11/11/2008 | US7449949 Data amplifying circuit controllable with swing level according to operation mode and output driver including the same |
| 11/11/2008 | US7449948 Amplifier |
| 11/11/2008 | US7449947 Reduction of voltage spikes in switching half-bridge stages |
| 11/11/2008 | US7449922 Sensing circuitry and method of detecting a change in voltage on at least one input line |
| 11/11/2008 | US7449908 Process monitor for monitoring an integrated circuit chip |
| 11/11/2008 | US7449670 Amplifier circuit and optical pickup device |
| 11/11/2008 | US7449669 Receiving apparatus |
| 11/06/2008 | WO2007059162A3 Unipolar electric pulse generator |
| 11/06/2008 | US20080274714 Amplifier, filter using the same, and radio communication device |
| 11/06/2008 | US20080273394 Symmetric differential current sense amplifier |
| 11/06/2008 | US20080273120 Single supply direct drive amplifier |
| 11/06/2008 | US20080273106 Class AB amplifier and imagers and systems using same |
| 11/06/2008 | US20080272848 Nested transimpedance amplifier |
| 11/06/2008 | US20080272846 Adaptive biasing input stage and amplifiers including the same |
| 11/06/2008 | US20080272845 Operational transconductance amplifier (ota) |
| 11/06/2008 | US20080272844 Class ab folded-cascode amplifier having cascode compensation |
| 11/06/2008 | US20080272843 Integrated Amplifier Circuit |
| 11/06/2008 | US20080272842 Calibrated feedback |
| 11/06/2008 | US20080272841 Systems and Methods of RF Power Transmission, Modulation, and Amplification, including Embodiments for Extending RF Transmission Bandwidth |
| 11/06/2008 | US20080272840 Multiple-Input and Multiple-Output Amplifier |
| 11/06/2008 | US20080272821 Signal Converting Circuit |
| 11/06/2008 | DE102007021402A1 Integrierter Verstärkerschaltkreis Integrated amplifier circuit |
| 11/06/2008 | DE102007020823A1 Vorrichtung und Verfahren zum Erzeugen von mit Amplitudenumtastung codierten Signalen Apparatus and method for generating coded signals with amplitude shift keying |
| 11/06/2008 | DE10010153B4 Switched-Capacitor-Referenzstromquelle Switched capacitor reference current source |
| 11/05/2008 | EP1988629A2 Integrated amplifier circuit |
| 11/05/2008 | EP1987585A1 Audio power conversion system |
| 11/05/2008 | EP1986738A2 Class-e radio frequency power amplifier with feedback control |
| 11/05/2008 | EP1986737A1 Class-e radio frequency amplifier for use with an implantable medical device |
| 11/05/2008 | EP1716723B1 Output stage for a hearing aid and method of driving output stage |
| 11/05/2008 | EP1632025B1 Improved load and line regulation using operational transconductance amplifier and operational amplifier in tandem |
| 11/05/2008 | CN201146482Y Circuit for detecting radio frequency power |
| 11/05/2008 | CN101299614A Handhold equipment for prolonging working time and implementing method |
| 11/05/2008 | CN101299596A Adaptive biasing input stage and amplifiers including the same |
| 11/05/2008 | CN101299594A Selection circuit |
| 11/05/2008 | CN101299548A Power control apparatus, speaker apparatus and power control method |
| 11/05/2008 | CN100431285C Linear low noise amplifying device of time division duplex system |
| 11/05/2008 | CN100431269C Comparator circuit and bias compensator |
| 11/05/2008 | CN100431264C N-way RF power amplifier circuit with increased back-off capability and power added efficiency |
| 11/05/2008 | CN100431263C Pulse modulated power converter |
| 11/04/2008 | US7446627 Compact stabilized full-band power amplifier arrangement |
| 11/04/2008 | US7446613 Power amplifier input structure having a differential output |
| 11/04/2008 | US7446611 Fully differential amplifier device with output-common-mode feedback and control method thereof |
| 11/04/2008 | US7446610 Low voltage CMOS differential amplifier |
| 11/04/2008 | US7446609 Variable gain amplifier with gain adjusting circuit |
| 11/04/2008 | US7446608 Variable gain amplifier with constant input referred third order intercept |
| 11/04/2008 | US7446607 Regulated cascode circuit, an amplifier including the same, and method of regulating a cascode circuit |
| 11/04/2008 | US7446606 Methods and apparatus to provide slew enhancement for low power amplifiers |
| 11/04/2008 | US7446604 Multi-band low noise amplifier |
| 11/04/2008 | US7446603 Differential input Class D amplifier |
| 10/30/2008 | WO2008129611A1 High frequency transmitter apparatus |
| 10/30/2008 | WO2008112041A3 Power supply providing ultrafast modulation of output voltage |
| 10/30/2008 | WO2007109498A3 Wideband ultra low noise amplifier |
| 10/30/2008 | WO2007090008A3 Method and apparatus for controlling an output voltage in a power amplifier |
| 10/30/2008 | WO2007087586A3 Systems and methods for over-current protection |
| 10/30/2008 | US20080265997 Power Amplifier for Amplifying High-Frequency (H.F.) Signals |
| 10/30/2008 | US20080265993 Class AB Rail-to-Rail Input and Output Operational Amplifier |
| 10/30/2008 | US20080265992 Transconductance Stage Arrangement |
| 10/30/2008 | US20080265991 Gain control module and applications thereof |
| 10/30/2008 | US20080265990 Semiconductor circuit |
| 10/30/2008 | US20080265989 Filterless class-D speaker driver with less switching |
| 10/30/2008 | US20080265987 Signal extraction circuit |
| 10/30/2008 | US20080265942 Differential amplifier, digital-to-analog converter and display apparatus |
| 10/30/2008 | US20080265929 Process Monitor for Monitoring and Compensating Circuit Performance |
| 10/30/2008 | US20080265862 Parallell Arranged Power Supplies |
| 10/30/2008 | US20080265822 Class G motor drive |
| 10/30/2008 | DE112006003184T5 Vollbrücken-Leistungsverstärker der Klasse D Full-bridge power amplifier Class D |
| 10/30/2008 | DE112006002920T5 Rauscharmer HEMT-Verstärker mit großer Bandbreite und aktiver Eingangslast Low-noise HEMT amplifier with high bandwidth and active input load |
| 10/30/2008 | DE10231156B4 Schaltung zum Liefern einer Basis-Betriebsspannung für einen Bipolartransistor und Verstärkerschaltung Circuit for providing a base operating voltage for a bipolar transistor and amplifier circuit |
| 10/29/2008 | EP1985018A2 Systems and methods for pulse width modulating asymmetric signal levels |
| 10/29/2008 | EP1985014A2 Pwm feedback/feed-forward protection |
| 10/29/2008 | EP1985013A2 Systems and methods for improving performance in a digital amplifier by adding an ultrasonic signal to an input audio signal |
| 10/29/2008 | EP1405071B1 Measuring cell and measuring field comprising measuring cells of this type, use of a measuring cell and use of a measuring field |
| 10/29/2008 | CN201142680Y Detecting control device of digital station field broadcast machine |
| 10/29/2008 | CN201142679Y Prepositioned amplifying module of digital station field broadcast machine |
| 10/29/2008 | CN201142671Y Digital audio power amplification circuit |
| 10/29/2008 | CN201142670Y Adjustable high-sensibility high-resolution audio-detector |
| 10/29/2008 | CN201141879Y Active variable impedance synthesizer |
| 10/29/2008 | CN101297477A Transconductance device |
| 10/29/2008 | CN101297476A Device and method for amplifying pulsed RF signals |
| 10/29/2008 | CN101297475A Method and arrangement for optimizing efficiency of a power amplifier |