| 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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| 01/31/2006 | US6993460 Method and system for tracking eigenvalues of matrix pencils for signal enumeration |
| 01/31/2006 | US6993301 Lineariser for a signal handling apparatus |
| 01/31/2006 | US6993090 Distortion compensation apparatus and distortion compensation method |
| 01/31/2006 | US6993086 High performance short-wave broadcasting transmitter optimized for digital broadcasting |
| 01/31/2006 | US6992543 Mems-tuned high power, high efficiency, wide bandwidth power amplifier |
| 01/31/2006 | US6992530 RF amplifier with improved impedance matching |
| 01/31/2006 | US6992529 Apparatus, methods and articles of manufacture for a dual mode amplifier |
| 01/31/2006 | US6992527 Digital power amplifier |
| 01/31/2006 | US6992526 Apparatus and method for DC offset reduction |
| 01/31/2006 | US6992524 Quiescent current control circuit for high-power amplifiers |
| 01/31/2006 | US6992519 Method and apparatus providing cancellation of second order intermodulation distortion and enhancement of second order intercept point (IIP2) in common source and common emitter transconductance circuits |
| 01/31/2006 | CA2427379C Wideband dual amplifier circuits |
| 01/26/2006 | WO2005015753A3 Improved radio frequency digital-to-analog converter |
| 01/26/2006 | US20060020429 Method and apparatus for configuring interfaces for automated systems |
| 01/26/2006 | US20060019621 Radio frequency circuit and communication system with power amplifier control |
| 01/26/2006 | US20060017500 Composite power amplifier |
| 01/26/2006 | US20060017499 Subtractor circuit and power detector arrangement having that subtractor circuit |
| 01/26/2006 | DE202005018670U1 Tube amplifier, has carbon cables as internal wiring for signal paths |
| 01/26/2006 | DE102004031687A1 Leistungsverstärkeranordnung und Verfahren zum Verarbeiten eines Hochfrequenzsignals Power amplifier arrangement and method for processing a high-frequency signal |
| 01/25/2006 | EP1619792A1 Preamplifier |
| 01/25/2006 | EP1619791A1 Power control of a power amplifier |
| 01/25/2006 | EP1618694A2 Distributed gain network |
| 01/25/2006 | EP1618653A1 Radio frequency limiter circuit |
| 01/25/2006 | EP1618652A2 Large gain-bandwith amplifier |
| 01/25/2006 | EP1618650A1 Method and device for power amplifier with high accuracy of an output signal |
| 01/25/2006 | EP1510000B1 Operational amplifier with independent input offset trim for high and low common mode input voltages |
| 01/25/2006 | EP1374392B1 Amplifying circuit |
| 01/25/2006 | CN2754272Y Predistortion circuit |
| 01/25/2006 | CN2754271Y Power amplifying machine |
| 01/25/2006 | CN1726685A Adaptive synchronization scheme |
| 01/25/2006 | CN1726637A Delay mismatched feed forward amplifier system using penalties and floors for control |
| 01/25/2006 | CN1726636A Feed forward amplifier system using penalties and floors for optimal control |
| 01/25/2006 | CN1725631A Method for increasing linearity of feedforward power amplifier using carrier leakage effect |
| 01/25/2006 | CN1725630A Module device of low noise amplifier |
| 01/25/2006 | CN1239042C Doherty amplifier |
| 01/24/2006 | US6990323 RF power amplifier circuit |
| 01/24/2006 | US6989713 Predistortion circuit, low-distortion power amplifier, and control methods therefor |
| 01/24/2006 | US6989712 Accurate power detection for a multi-stage amplifier |
| 01/19/2006 | WO2006006909A1 A radio transmitter and a method of operating a radio transmitter |
| 01/19/2006 | US20060015291 Methods and systems for data analysis |
| 01/19/2006 | US20060013334 Method and device for training an rf amplifier linearization device, and mobile terminal incorporating same |
| 01/19/2006 | US20060012436 Output circuit |
| 01/19/2006 | US20060012435 High frequency power amplification electric part and wireless communication system |
| 01/19/2006 | US20060012427 Estimating power amplifier non-linearity in accordance with memory depth |
| 01/19/2006 | US20060012426 Performing remote power amplifier linearization |
| 01/19/2006 | US20060012425 Radio frequency power amplifier |
| 01/18/2006 | EP1617558A1 High frequency transistor having an impedance transforming network |
| 01/18/2006 | CN1723616A 音频放大器 Audio Amplifiers |
| 01/18/2006 | CN1723615A Preserving linearity of an isolator-free power amplifier by dynamically adjusting gain and phase |
| 01/18/2006 | CN1723614A Preserving linearity of an isolator-free power amplifier by dynamically adjusting bias and supply of active devices |
| 01/18/2006 | CN1723613A Preserving linearity of an isolator-free power amplifier by dynamically switching active devices |
| 01/18/2006 | CN1723612A Amplifier circuit having an extended Wilson current-mirror self-bias boosting circuit |
| 01/18/2006 | CN1723611A Apparatus, methods and articles of manufacture for multiband signal processing |
| 01/18/2006 | CN1722612A Amplifying circuit |
| 01/18/2006 | CN1722611A Audio signal processing apparatus and audio signal processing method |
| 01/18/2006 | CN1722560A Overcurrent protection circuit |
| 01/18/2006 | CN1237712C Power amplifier for mobile telephone set |
| 01/18/2006 | CN1237710C Pre-distortion using by-pass signal |
| 01/18/2006 | CN1237709C Device for linearizing a high-frequency amplifier |
| 01/18/2006 | CN1237708C Crackle suppressing circuit and sound output amplifier |
| 01/17/2006 | US6987422 Equal phase multiple gain state amplifier |
| 01/17/2006 | US6987418 Sound signal generating apparatus and method for reducing pop noise |
| 01/17/2006 | US6987417 Polar and linear amplifier system |
| 01/12/2006 | WO2006003034A1 Method and system for linearizing the characteristic curve of a power amplifier |
| 01/12/2006 | US20060009952 Method of computing partial CRCs |
| 01/12/2006 | US20060009169 Trasmission device and adjustment method thereof |
| 01/12/2006 | US20060008027 Method for the adaptive pre-distortion of digital raw data values and device for carrying out said method |
| 01/12/2006 | US20060006950 Power amplifier utilizing high breakdown voltage circuit topology |
| 01/12/2006 | US20060006948 Circuit for providing a base operating voltage for a bipolar transistor and amplifier circuit |
| 01/12/2006 | US20060006944 High frequency power amplifier circuit |
| 01/12/2006 | US20060006935 Amplifier |
| 01/12/2006 | US20060006934 Method and apparatus for an improved power amplifier |
| 01/12/2006 | US20060006491 Circuit for adjusting the operating point of multiple gate field effect transistors |
| 01/11/2006 | EP1615338A1 Method and arrangement for linearising the transfer function of a power amplifier |
| 01/11/2006 | EP1615337A1 Transmission amplifier |
| 01/11/2006 | EP1614224A2 Additive digital predistortion system employing parallel path coordinate conversion |
| 01/11/2006 | EP1614218A1 Linear amplifier |
| 01/11/2006 | EP1614217A1 Digital amplifier |
| 01/11/2006 | EP1614216A1 Amplifier arrangement and distributed audio system |
| 01/11/2006 | EP1614215A1 Digital amplifier |
| 01/11/2006 | EP1614214A1 Digital amplifier |
| 01/11/2006 | EP1573908A4 Improved rf transistor amplifier linearity using suppressed third order transconductance |
| 01/11/2006 | EP1090457B1 Linear traveling wave tube amplifier utilizing input drive limiter for optimization |
| 01/11/2006 | CN1720668A Power limit device and digital radio transmitter using the same |
| 01/11/2006 | CN1720658A Amplifier circuit |
| 01/11/2006 | CN1719722A Self biased differential amplifier |
| 01/11/2006 | CN1236576C Power amplifier and method for CDMA system |
| 01/11/2006 | CN1236553C FET band amplifier |
| 01/10/2006 | US6985706 Feed forward amplifier system employing self-generating alignment lists and adaptive controller |
| 01/10/2006 | US6985578 Low voltage broadband line driver |
| 01/10/2006 | US6985053 Negative resistance circuit |
| 01/10/2006 | US6985039 Method and apparatus for providing a stable power output of power amplifiers, operating under unstable supply voltage conditions |
| 01/10/2006 | US6985035 System and method for linearizing a CMOS differential pair |
| 01/10/2006 | US6985033 Circuits and methods for adjusting power amplifier predistortion, and power amplifiers and other devices including the same |
| 01/10/2006 | US6985032 Amplifier linearisation |
| 01/10/2006 | US6985030 Differential amplifier, two-stage amplifier including the differential amplifier, and analog-to-digital converter including the differential amplifier |
| 01/10/2006 | US6985027 Voltage step down circuit with reduced leakage current |
| 01/10/2006 | US6985020 Inline predistortion for both CSO and CTB correction |
| 01/05/2006 | WO2006000646A1 Power source and method for controlling operational power |
| 01/05/2006 | WO2006000088A2 Transmit signal generator and method |