| 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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| 02/03/2005 | US20050024138 Predistorter for phase modulated signals with low peak to average ratios |
| 02/03/2005 | US20050024136 High frequency circuit using high output amplifier cell block and low output amplifier cell block |
| 02/03/2005 | US20050024134 Drive circuit, device, and method for suppressing noise, and use |
| 02/03/2005 | US20050024133 Method and apparatus for switching amplification having variable sample point and variable order correction |
| 02/03/2005 | US20050024123 Bias circuit and method of producing semiconductor device |
| 02/03/2005 | US20050023443 Photocurrent-to-voltage conversion apparatus including non-diode-connected clamping MOS transistor |
| 02/03/2005 | DE10361660A1 Power signal amplifier for use in mobile radio frequency equipment is based on multiple amplifier stages in parallel |
| 02/03/2005 | DE102004011494A1 Verfahren zur Erfassung von Signalabtastwerten A method for detection of signal |
| 02/02/2005 | EP1503496A1 Photocurrent-to-voltage conversion apparatus including non-diode-connected clamping MOS transistor |
| 02/02/2005 | EP1503495A2 Digital feed-forward system |
| 02/02/2005 | EP1503490A1 Current sensing circuit |
| 02/02/2005 | EP1502362A1 System and method for eliminating signal zero crossings in single and multiple channel communication systems |
| 02/02/2005 | EP1502352A2 Radio apparatus comprising an amplifier for radio-frequency signals, amplifier for radio-frequency signals and method for amplifying such signals |
| 02/02/2005 | EP1502309A1 Integrated circuit with internal impedance matching circuit |
| 02/02/2005 | EP1356584B1 Class e doherty amplifier topology for high efficiency signal transmitters |
| 02/02/2005 | CN2676495Y Device preventing generation of activation noise |
| 02/02/2005 | CN1575542A Operational amplifier with chopped input transistor pair |
| 02/02/2005 | CN1574665A 前端模块 Front-end module |
| 02/02/2005 | CN1574611A Mute circuit and btl audio amplifier apparatus |
| 02/02/2005 | CN1574610A Method of influencing an input signal and predistorter |
| 02/02/2005 | CN1574535A Electronic device, and circuit and method for protecting the same |
| 02/02/2005 | CN1574524A 激光器功率控制电路 A laser power control circuit |
| 02/02/2005 | CN1187895C Electronic apparatus with power amplifier |
| 02/02/2005 | CN1187894C Multistage amplifier |
| 02/02/2005 | CN1187890C 半导体放大器电路与系统 Semiconductor amplifier circuits and systems |
| 02/02/2005 | CN1187828C Semiconductor device capable of preventing generating multiple reflections, and driving and setting method |
| 02/01/2005 | US6850752 Single-to-differential conversion circuit outputting DC-balanced differential signal |
| 02/01/2005 | US6850232 Semiconductor device capable of internally generating bias changing signal |
| 02/01/2005 | US6850120 Semiconductor device including semiconductor element of high breakdown voltage |
| 02/01/2005 | US6850119 Power amplifier overload protection |
| 02/01/2005 | US6850117 CMOS transceiver having an integrated power amplifier |
| 02/01/2005 | US6850115 Enhanced efficiency LDMOS based feed forward amplifier |
| 02/01/2005 | US6850114 Pre-distortion of non-linear devices by post-detection |
| 02/01/2005 | US6850109 Linear voltage subtractor/adder circuit and MOS differential amplifier circuit therefor |
| 01/27/2005 | WO2005008884A1 Amplifying circuit comprising an envelope modulated limit cycles modulator circuit |
| 01/27/2005 | WO2005008883A2 Digital predistortion system and method for correcting memory effects within an rf power amplifier |
| 01/27/2005 | WO2004086611A3 Systems and methods for implementing a sample rate converter using hardware and software to maximize speed and flexibility |
| 01/27/2005 | US20050017806 Integrated circuit with an amplifier |
| 01/27/2005 | US20050017803 Switched mode power amplifier |
| 01/27/2005 | US20050017802 Digital cross cancellation system |
| 01/27/2005 | US20050017801 Elimination of peak clipping and improved efficiency for RF power amplifiers with a predistorter |
| 01/27/2005 | US20050017800 System and method for reducing dynamic range and improving linearity in an amplication system |
| 01/27/2005 | US20050017796 Input protection circuit |
| 01/27/2005 | US20050017770 Chopper comparator circuit |
| 01/27/2005 | US20050017761 Multi-input differential circuit |
| 01/26/2005 | EP1501187A1 System and method for reduced dynamic range and improving linearity in an amplification system |
| 01/26/2005 | EP1500190A1 Electronic amplifier circuit |
| 01/26/2005 | EP1500188A2 Power amplifier |
| 01/26/2005 | EP1500187A1 A differential amplifier |
| 01/26/2005 | EP1500186A2 An adaptive pre-distortion method and apparatus for digital rf transmitters |
| 01/26/2005 | EP1379929A4 Amplifier system with on-demand power supply boost |
| 01/26/2005 | EP1116324A4 Differential amplifier with gain linearization through transconductance compensation |
| 01/26/2005 | CN1572055A Rf功率放大器电路 Rf power amplifier circuit |
| 01/26/2005 | CN1571272A Parallel distortion signal generator and power amplifier applied circuit thereof |
| 01/26/2005 | CN1571271A Equipment and method for eliminating detonation |
| 01/26/2005 | CN1186885C 差分线路驱动器 Differential Line Driver |
| 01/26/2005 | CN1186876C Feedforward amplifier |
| 01/25/2005 | US6847321 Closed loop amplification with high throughput performance |
| 01/25/2005 | US6847260 Low dropout monolithic linear regulator having wide operating load range |
| 01/25/2005 | US6847259 Amplifier |
| 01/25/2005 | US6847226 Semiconductor instrument |
| 01/25/2005 | CA2151356C Pre-distorting linearization circuit |
| 01/20/2005 | WO2005006542A1 Cartesian loop transmitter and method of adjusting an output level of such transmitter |
| 01/20/2005 | WO2005006540A1 Apparatus, amplifier, system and method for receiver equalization |
| 01/20/2005 | WO2005004716A1 Amplifier system for determining parameters of a patient |
| 01/20/2005 | WO2004068705A8 Preamplifier circuit, clock switch circuit, and optical receiver using the same |
| 01/20/2005 | WO2004036739A3 Continuous bias circuit and method for an amplifier |
| 01/20/2005 | US20050013384 Predistortion modulator |
| 01/20/2005 | US20050012554 Efficient class-g amplifier with wide output voltage swing |
| 01/20/2005 | US20050012553 Variable gain low noise amplifier and method |
| 01/20/2005 | US20050012552 System and method for improved bias matching |
| 01/20/2005 | US20050012551 Methods and systems for stabilizing an amplifier |
| 01/20/2005 | US20050012550 Digital signal processing based implementation of a feed forward amplifier |
| 01/20/2005 | US20050012548 High-frequency amplifier circuit |
| 01/20/2005 | US20050012547 High linearity doherty communication amplifier with phase control |
| 01/20/2005 | DE102004023480A1 Digitale Vorverzerrung zur Linearisierung von Leistungsverstärkern mit Asymmetrie-Eigenschaften Digital predistortion for linearization of power amplifiers with asymmetry properties |
| 01/20/2005 | CA2526723A1 Amplifier system for determining parameters of a patient |
| 01/19/2005 | EP1499027A1 Distortion compensation apparatus |
| 01/19/2005 | EP1499015A1 Circuit and process for linearizing the characteristics of a GSM power amplifier |
| 01/19/2005 | EP1499012A1 Method and apparatus for linearization of a power amplifier for mobile phones |
| 01/19/2005 | EP1499011A1 Amplifying circuit comprising an envelope modulated limit cycles modulator circuit |
| 01/19/2005 | EP1425851A4 Broadband amplifier system having improved linearity and minimum loss |
| 01/19/2005 | EP1399792A4 Self-bootstrapping transducer interface |
| 01/19/2005 | EP1308026B1 Driver circuit for subscriber terminals |
| 01/19/2005 | EP1042865B8 Pulse referenced control method for enhanced power amplification of a pulse modulated signal |
| 01/19/2005 | EP0882325B1 Charge sensitive amplifier with high common mode signal rejection |
| 01/19/2005 | CN1568573A Amplification circuit |
| 01/19/2005 | CN1568478A Amplifier modulation |
| 01/19/2005 | CN1567716A Amplifying circuit |
| 01/19/2005 | CN1567715A Amplifier having fixed input impedance and related method |
| 01/19/2005 | CN1567713A Low-energy zone gap reference voltage circuit |
| 01/19/2005 | CN1185792C Improved floating, balanced output circuit |
| 01/19/2005 | CN1185788C Power amplification circuit with load regulator for controlling adjacent and alternate channel power |
| 01/19/2005 | CN1185786C 放大器电路 The amplifier circuit |
| 01/19/2005 | CN1185785C 信号处理 Signal Processing |
| 01/19/2005 | CN1185784C Method and apparatus for preventing power amplifier saturation |
| 01/18/2005 | US6844793 Signal combiner, a signal splitter and a circuit using a combiner and a splitter |
| 01/18/2005 | US6844792 Single ended tuning of a differential power amplifier output |
| 01/18/2005 | US6844788 Polar loop transmitter |
| 01/18/2005 | US6844782 Temperature compensation circuit and a variable gain amplification circuit |