| 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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| 09/22/2005 | US20050208905 High frequency power amplifier module, and wireless communication system |
| 09/22/2005 | US20050206490 Double transformer balun for maximum power amplifier power |
| 09/22/2005 | US20050206457 Amplifier system and method |
| 09/22/2005 | US20050206456 High frequency power amplifier module and wireless communication apparatus |
| 09/22/2005 | US20050206455 Method to control the supply power being provided to a power amplifier |
| 09/22/2005 | US20050206454 Low noise op amp |
| 09/22/2005 | US20050206450 AC differential amplifier with reduced low corner frequency |
| 09/22/2005 | US20050206448 Apparatus, methods and articles of manufacture for electromagnetic processing |
| 09/22/2005 | US20050206444 Methods and systems for decoupling the stabilization of two loops |
| 09/22/2005 | US20050206412 High frequency differential power amplifier |
| 09/22/2005 | US20050206324 Input/output buffer |
| 09/22/2005 | DE102004010665A1 Vorrichtung und Verfahren zum Ermitteln eines Zustandsparameters eines zu überwachenden Objektes Apparatus and method for determining a state parameter of the monitored object |
| 09/22/2005 | CA2559780A1 A doherty amplifier |
| 09/22/2005 | CA2559169A1 Highly linear variable gain amplifier |
| 09/21/2005 | EP1578014A1 Double transformer balun for maximum power transfer from power amplifier |
| 09/21/2005 | EP1578011A1 Power amplifying apparatus |
| 09/21/2005 | EP1576727A1 Sliding bias circuit for enabling dynamic control of quiescent current in a linear power amplifier |
| 09/21/2005 | EP1576726A1 Composite amplifier structure |
| 09/21/2005 | EP1576725A2 Thermal feedback for switch mode amplification |
| 09/21/2005 | EP1576724A2 Rf power amplifier employing bias circuit topologies for minimization of rf amplifier memory effects |
| 09/21/2005 | EP1297624B1 Dual bridge amplifier |
| 09/21/2005 | CN1672323A Feedback amplifier having amplified signal path and feedback signal path separated |
| 09/21/2005 | CN1672322A 功率放大器 PA |
| 09/21/2005 | CN1671044A Method and apparatus for self-adaptive cancellation control of feedforward linear power amplifier optimizing model |
| 09/21/2005 | CN1671043A High-frequency power amplifier and communication apparatus |
| 09/21/2005 | CN1671042A Biasing circuit for field-effect transistor |
| 09/21/2005 | CN1671041A Temperature compensation attenuator |
| 09/21/2005 | CN1671040A Low noise operational amplifier |
| 09/21/2005 | CN1670858A Single inline memory module |
| 09/21/2005 | CN1220371C Shock sound prevention circuit |
| 09/21/2005 | CN1220327C Feedforward amplifier and power amplifying method using feedforward amplifier |
| 09/21/2005 | CN1220064C Distortion detector |
| 09/20/2005 | US6947712 Group delay precompensator for broadband radio frequency transmitter and method of operating the same |
| 09/20/2005 | US6947711 Method and apparatus for generating a radio frequency signal |
| 09/20/2005 | US6947548 Driver circuit for subscriber terminals |
| 09/20/2005 | US6946914 Ultra-wideband constant gain CMOS amplifier |
| 09/20/2005 | US6946913 High frequency amplifier circuit |
| 09/20/2005 | US6946912 MMIC distributed amplifier gate control using active bias |
| 09/20/2005 | US6946911 Temperature-insensitive bias circuit for high-power amplifiers |
| 09/20/2005 | US6946909 Impedance matched low noise amplifier |
| 09/20/2005 | US6946908 Programmable radio frequency predistortion linearizer and method thereof |
| 09/20/2005 | US6946906 System and method of pilot tone reuse in a feedforward amplifier |
| 09/20/2005 | US6946905 Offset cancel circuit of voltage follower equipped with operational amplifier |
| 09/20/2005 | US6946898 System and method for biasing electrical circuits |
| 09/20/2005 | US6946895 Mixer device including an amplifier circuit |
| 09/20/2005 | US6946849 Circuit for calibrating a resistance |
| 09/15/2005 | WO2005086361A1 Digital predistortion system and method for linearizing an rf power amplifier with nonlinear gain characteristics and memory effects |
| 09/15/2005 | WO2005086360A1 Load insensitive power amplifier |
| 09/15/2005 | WO2005086343A1 Temperature compensating circuit |
| 09/15/2005 | US20050202789 Transmitter and transceiver |
| 09/15/2005 | US20050201487 Pre-distortion method, measurement arrangement, pre-distorter structure, transmitter, receiver and connecting device |
| 09/15/2005 | US20050200512 Analog-to-digital converter including a plurality of amplifier circuits |
| 09/15/2005 | US20050200426 Off-chip LC circuit for lowest ground and VDD impedance for power amplifier |
| 09/15/2005 | US20050200425 System method and apparatus for a three-line balun with power amplifier bias |
| 09/15/2005 | US20050200422 Tunable filters having variable bandwidth and variable delay |
| 09/15/2005 | US20050200420 Supply circuit for power amplifier drivers |
| 09/15/2005 | US20050200417 Use of analog-valued floating-gate transistors for parallel and serial signal processing |
| 09/15/2005 | US20050200416 Use of analog-valued floating-gate transistors for parallel and serial signal processing |
| 09/15/2005 | US20050200415 Use of analog-valued floating-gate transistors for parallel and serial signal processing |
| 09/15/2005 | US20050200409 System and method for control of loop alignment in adaptive feed forward amplifiers |
| 09/15/2005 | US20050200408 Method and apparatus for feed forward linearization of wideband RF amplifiers |
| 09/15/2005 | US20050200407 High frequency power amplifier and wireless communication module |
| 09/15/2005 | US20050200402 Use of analog-valued floating-gate transistors for parallel and serial signal processing |
| 09/15/2005 | US20050200387 Method for RIAA correction without capacitors in correcting circuits |
| 09/15/2005 | DE102004006957A1 Verfahren und Vorrichtung zum Verstärken eines Empfangssignals Method and apparatus for amplifying a reception signal |
| 09/14/2005 | EP1575162A1 Audio amplifier |
| 09/14/2005 | EP1575161A1 Differential to single-ended signal conversion circuit and RF transmitter including such circuit |
| 09/14/2005 | EP1573993A1 A method and system for broadband predistortion linearizaion |
| 09/14/2005 | EP1573908A1 Improved rf transistor amplifier linearity using suppressed third order transconductance |
| 09/14/2005 | EP1573907A2 Delay mismatched feed forward amplifier system using penalties and floors for control |
| 09/14/2005 | EP1573906A1 Preserving linearity of an isolator-free power amplifier by dynamically adjusting gain and phase |
| 09/14/2005 | EP1573905A1 Preserving linearity of an isolator-free power amplifier by dynamically adjusting bias and supply of active devices |
| 09/14/2005 | EP1573904A1 Preserving linearity of an isolator-free power amplifier by dynamically switching active devices |
| 09/14/2005 | EP1573903A1 Phase-error based signal alignment |
| 09/14/2005 | EP1573902A1 Real-time digital phase and gain adaptation method using feedback and arrangement using such a method |
| 09/14/2005 | EP1573901A1 Amplifier circuit having an extended wilson current-mirror self-bias boosting circuit |
| 09/14/2005 | EP1573900A1 Feed forward amplifier system using penalties and floors for optimal control |
| 09/14/2005 | EP1573898A2 Amplifier circuit having an impedance-controllable bias-boosting circuit |
| 09/14/2005 | CN1667968A 发射机和收发机 Transmitters and transceivers |
| 09/14/2005 | CN1667945A Linear audio power amplifying system with predistortion |
| 09/13/2005 | US6944438 Transconductance stage and device for communication by Hertzian channel equipped with such a stage |
| 09/13/2005 | US6944437 Electronically programmable multimode circuit |
| 09/13/2005 | US6944331 Locating regions in a target image using color matching, luminance pattern matching and hue plane pattern matching |
| 09/13/2005 | US6943640 Current source modulator |
| 09/13/2005 | US6943631 DC-coupled multi-stage amplifier using all-pass resistive/capacitive network for level shifting |
| 09/13/2005 | US6943629 Transient protection circuit of Darlington amplifier |
| 09/13/2005 | US6943628 Methods and apparatus for substantially reducing nonlinear distortion |
| 09/13/2005 | US6943627 Calibration of an adaptive signal conditioning system |
| 09/13/2005 | US6943625 Gain and phase balanced amplifier redundancy system |
| 09/13/2005 | US6943624 Radio frequency power amplifier |
| 09/13/2005 | US6943621 Auto-routable, configurable, daisy chainable data acquisition system |
| 09/13/2005 | US6943618 Compensation mechanism for compensating bias levels of an operation circuit in response to supply voltage changes |
| 09/13/2005 | US6943500 Matrix element precharge voltage adjusting apparatus and method |
| 09/13/2005 | US6943387 Semiconductor device, manufacturing thereof and power amplifier module |
| 09/09/2005 | WO2005083891A1 Transmitter apparatus and wireless communication apparatus |
| 09/08/2005 | US20050197089 Apparatus and method for dynamic DC offset detection and cancellation |
| 09/08/2005 | US20050197066 Non-linear distortion compensation circuit for multi-carrier transmission |
| 09/08/2005 | US20050195918 Transmitting circuit, communication equipment, audio equipment, video equipment, and transmitting method |
| 09/08/2005 | US20050195038 Linearized trans-impedance amplifier |
| 09/08/2005 | US20050195033 Differential amplifier circuit used in solid-state image pickup apparatus, and arrangement that avoids influence of variations of integrated circuits in manufacture and the like |