| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
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| 03/24/2009 | US7508260 Bypassable low noise amplifier topology with multi-tap transformer |
| 03/24/2009 | CA2508156C Sonar transmitter |
| 03/19/2009 | WO2009035767A1 Input circuitry for transistor power amplifier and method for designing such circuitry |
| 03/19/2009 | WO2009034935A1 Semiconductor device |
| 03/19/2009 | WO2009034889A1 Local broadcasting system |
| 03/19/2009 | WO2009034659A1 Tunable impedance matching circuit |
| 03/19/2009 | US20090075597 Device, system, and method of low-noise amplifier |
| 03/19/2009 | US20090074205 Vacuum tube preamplifier, amplifier and method for musical instruments with programmable controls |
| 03/19/2009 | US20090073020 Parallel type analog-to-digital conversion circuit, sampling circuit and comparison amplification circuit |
| 03/19/2009 | US20090072909 Current mirror circuit |
| 03/19/2009 | US20090072907 Electric circuit |
| 03/19/2009 | US20090072906 High frequency power amplifier circuit and electronic component for high frequency power amplifier |
| 03/19/2009 | US20090072905 Variable gain amplifier having wide gain variation and wide bandwidth |
| 03/19/2009 | US20090072904 Variable Gain Amplifier Having Dual Gain Control |
| 03/19/2009 | US20090072903 Variable Gain Amplifier Having Variable Gain DC Offset Loop |
| 03/19/2009 | US20090072902 Low distortion class-d amplifier |
| 03/19/2009 | US20090072901 Power amplifier |
| 03/19/2009 | US20090072897 Sigma-delta class-D amplifier and control method for a sigma-delta class-D amplifier |
| 03/19/2009 | DE60133088T2 Eingangsstufe und hochfrequenzempfänger mit rauscharmem quadraturverstärker Input stage and high-frequency receiver with quadrature-noise amplifier |
| 03/19/2009 | DE102007048454B3 Electronic device, has current mirror transistors and power sources extracting currents from respective output nodes and designed such that one of currents about portion corresponding to leakage current is higher than other current |
| 03/19/2009 | DE102004045709B4 Verfahren zur Einstellung eines Verstärkers und Verstärkerschaltung A method of adjusting an amplifier and amplifier circuit |
| 03/18/2009 | EP2037587A1 Transmission circuit and communication device |
| 03/18/2009 | EP2037576A2 Method of automatically adapting the impedance of a radiofrequency circuit and emission or reception instrumentation with automatic adaptation |
| 03/18/2009 | EP2037573A1 Ultra-low power consumption low noise amplifier |
| 03/18/2009 | EP2037572A1 Ultra-low power consumption current-reused front-end for a RF system |
| 03/18/2009 | EP2036285A2 Remote non-linearity detection via burst power dithering |
| 03/18/2009 | EP1851855B1 Receiver comprising an amplifier |
| 03/18/2009 | EP1751853A4 A tuneable circuit for canceling third order modulation |
| 03/18/2009 | CN201210720Y Circuit device implementing machine opening music of television set |
| 03/18/2009 | CN201210667Y Electronic tube type audio amplifier |
| 03/18/2009 | CN101390287A Digital PWM amplifier with simulation-based feedback |
| 03/18/2009 | CN101390286A Audio power conversion system |
| 03/18/2009 | CN101388651A Receiver of high speed digital interface |
| 03/18/2009 | CN101388650A Nested type Miller active capacitor frequency compensation circuit |
| 03/18/2009 | CN101388649A Low non-linear power amplifier |
| 03/18/2009 | CN101388648A Multi-frequency multi-mode power amplifier and operating method thereof |
| 03/18/2009 | CN101388595A PWM pulse controller |
| 03/18/2009 | CN101388201A Voltage generation circuit |
| 03/18/2009 | CN101387894A Bias current generating circuit and operational amplifier |
| 03/18/2009 | CN100471065C Ultra high speed time sequence analog latch |
| 03/18/2009 | CN100471063C Bias-voltage circuit for use on sound source amplifier |
| 03/18/2009 | CN100471054C Differential amplifier circuit and drive circuit of liquid crystal display unit using the same |
| 03/18/2009 | CN100471053C Differential circuit and receiver with same |
| 03/18/2009 | CN100471052C Cross coupling C-type radio frequency power amplifier |
| 03/18/2009 | CN100471051C Low voltage negative feedback transconductance amplifier |
| 03/18/2009 | CN100471050C Lower voltage conductor-spanning amplifier capable of improving the linearity and input range |
| 03/18/2009 | CN100471049C Digital predistorter and predistortion method therefor |
| 03/18/2009 | CN100471048C Multi carrier power amplifier in wireless communication system |
| 03/18/2009 | CN100471046C A differential amplifier |
| 03/18/2009 | CN100471044C Frequency switching circuit for restraining the D power amplifier POP sound and its method |
| 03/18/2009 | CN100471043C Amplifier |
| 03/18/2009 | CN100470207C Two-wire system vortex street flowmeter |
| 03/17/2009 | US7505855 Multi-channel amplifier having programmable operational characteristics controlled with a serial interface |
| 03/17/2009 | US7505747 Distributed automatic gain control system |
| 03/17/2009 | US7505742 Battery life extending technique for mobile wireless applications using bias level control |
| 03/17/2009 | US7505532 Signal transmission system using PRD method, receiver circuit for use in the signal transmission system, and semiconductor memory device to which the signal transmission system is applied |
| 03/17/2009 | US7505391 Arrangement for reading an information carrier |
| 03/17/2009 | US7504889 Circuit for providing a signal boost |
| 03/17/2009 | US7504888 Internally compensated differential amplifier |
| 03/17/2009 | US7504887 High-frequency power amplifier and communication device |
| 03/17/2009 | US7504886 Thermal tail compensation |
| 03/17/2009 | US7504883 Amplifier device including an operational amplifier, transformer and feedback loop |
| 03/17/2009 | US7504882 Differential amplifier circuit and semiconductor device |
| 03/17/2009 | US7504874 Transistor arrangement with temperature compensation and method for temperature compensation |
| 03/12/2009 | WO2009033190A1 High density in-package microelectronic amplifier |
| 03/12/2009 | WO2009032573A2 Common-mode bandwidth reduction circuit and method for differential applications |
| 03/12/2009 | WO2009032415A1 Method for designing input circuitry for transistor power amplifier |
| 03/12/2009 | WO2009031952A1 Signal modulation for switched mode power amplifiers |
| 03/12/2009 | WO2009031404A1 Transmission circuit, transmitter unit, receiver unit and test device |
| 03/12/2009 | WO2009031042A2 N-way doherty distributed power amplifier |
| 03/12/2009 | WO2009006578A3 Systems and methods for saturation detection and correction in a power control loop |
| 03/12/2009 | US20090068967 Communication semiconductor integrated circuit, communication electronic component and wireless communication system |
| 03/12/2009 | US20090067545 Receiver of high speed digital interface |
| 03/12/2009 | US20090066422 Dynamically controlled output slew rate pad driver |
| 03/12/2009 | US20090066420 Solid state power amplifier with multi-planar mmic modules |
| 03/12/2009 | US20090066418 Amplifier circuit and communication device |
| 03/12/2009 | US20090066417 High bandwidth apparatus and method for generating differential signals |
| 03/12/2009 | US20090066416 Push-pull amplifier |
| 03/12/2009 | US20090066415 Operational amplifier having high slew rate and stability, and operating method thereof |
| 03/12/2009 | US20090066414 Gain control methods and systems in an amplifier assembly |
| 03/12/2009 | US20090066413 Method and Apparatus for Diminishing Mismatch Effects Between Switched Signals |
| 03/12/2009 | US20090066412 Class-d amplifier circuit |
| 03/12/2009 | US20090066411 Method for designing input circuitry for transistor power amplifier |
| 03/11/2009 | EP2034690A1 Offloaded processing for wireless applications |
| 03/11/2009 | EP2033314A2 Differential amplifier with over-voltage protection and method |
| 03/11/2009 | EP2033307A1 Integrated implementation of a voltage boost follower and method therefor |
| 03/11/2009 | EP2033306A1 Switched mode power amplification |
| 03/11/2009 | EP1875318B1 System and method for compensating the temperature of a resistor |
| 03/11/2009 | EP1704452B1 Transistor arrangement with temperature compensation and method for temperature compensation |
| 03/11/2009 | EP1588484B1 Pulse modulated power converter |
| 03/11/2009 | EP1410494B1 System and method for current-mode amplitude modulation |
| 03/11/2009 | EP1350313B1 Gain and bandwidth enhancement for rf power amplifier package |
| 03/11/2009 | EP1136798B1 Photodetector device |
| 03/11/2009 | CN201207726Y Simple power amplifier having automatically switching function |
| 03/11/2009 | CN201207636Y Differential amplifier circuit for audio signal |
| 03/11/2009 | CN201207635Y Single end serially inputting bridge type power amplifier |
| 03/11/2009 | CN201207634Y Dead zone time modulation circuit and audio power amplifier |
| 03/11/2009 | CN201207034Y Photoelectric conversion pre-amplifier circuit |
| 03/11/2009 | CN101385238A D type amplifier and method thereof |
| 03/11/2009 | CN101385237A Method and apparatus for implementing soft switching in a class d amplifier |