| Patents for H03F 1 - Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements (30,272) |
|---|
| 08/10/2005 | CN1214521C VF impedance adapting amplifier device for low frequency with electronic tubes insertible on line of path of low frequency signal |
| 08/10/2005 | CN1214519C Feedforward amplifier |
| 08/10/2005 | CN1214518C Turn-off noise suppressing circuit for audio amplifier |
| 08/09/2005 | US6928395 Method and system for dynamic learning through a regression-based library generation process |
| 08/09/2005 | US6928273 Radio transmission apparatus for communication using microwave signal |
| 08/09/2005 | US6928272 Distortion compensating circuit for compensating distortion occurring in power amplifier |
| 08/09/2005 | US6928122 Amplifier predistortion system and method |
| 08/09/2005 | US6927644 Low-loss tunable ferro-electric device and method of characterization |
| 08/09/2005 | US6927634 Self-biased Darlington amplifier |
| 08/09/2005 | US6927633 High frequency circuit with thin film resistor |
| 08/09/2005 | US6927631 Wideband CMOS gain stage |
| 08/09/2005 | US6927629 Differential amplifier having improved balanced and linearity |
| 08/09/2005 | US6927626 Thermal protection system for an output stage of an amplifier |
| 08/09/2005 | US6927625 High frequency circuit using high output amplifier cell block and low output amplifier cell block |
| 08/09/2005 | US6927624 Method and circuit for improving control of trimming procedure |
| 08/04/2005 | WO2005071849A1 Transmitter apparatus and wireless communication apparatus |
| 08/04/2005 | WO2005071829A1 Radio frequency (rf) and/or microwave power amplification device and corresponding radio communication terminal |
| 08/04/2005 | WO2005069897A2 Wideband enhanced digital injection predistortion system and method |
| 08/04/2005 | WO2005057779B1 Eer modulator with power amplifier having feedback loop providing soft output impedance |
| 08/04/2005 | US20050171741 Communication apparatus and communication method |
| 08/04/2005 | US20050170840 System for allocating channels to calls via updatable priorities |
| 08/04/2005 | US20050170794 Adjusting circuit |
| 08/04/2005 | US20050168289 Receiver circuit having an optical reception device |
| 08/04/2005 | US20050168288 Low gate oxide stress power amplifier |
| 08/04/2005 | US20050168287 High frequency amplifier |
| 08/04/2005 | US20050168286 Bias circuit with threshold voltage change compensation function and temperature change compensation function |
| 08/04/2005 | US20050168285 Output impedance control circuit and control method thereof |
| 08/04/2005 | US20050168283 Multi-band predistorter using power series representation |
| 08/04/2005 | US20050168282 Electronic circuit |
| 08/04/2005 | US20050168281 High-frequency power amplification electronic part and wireless communication system |
| 08/04/2005 | US20050168280 Efficient power control of a power amplifier by periphery switching |
| 08/04/2005 | US20050168278 Device and method for nullifying offset voltages in operational amplifiers |
| 08/04/2005 | US20050167776 Vertical-type power metal oxide semiconductor device with excess current protective function |
| 08/04/2005 | DE102004001434A1 Speicherbauelement Memory device |
| 08/03/2005 | EP1560346A1 Distortion compensation amplifying apparatus and base station |
| 08/03/2005 | EP1560329A1 Digital predistorter using power series model |
| 08/03/2005 | EP1560328A1 Multi-band feed-forward amplifier and adjustment method therefor |
| 08/03/2005 | EP1560327A1 Multi-band look-up table type predistorter |
| 08/03/2005 | EP1559199A2 Rf circuit with frequency agile sequential amplifiers |
| 08/03/2005 | EP1559192A1 Method and device for training an rf amplifier linearization device, and mobile terminal incorporating same |
| 08/03/2005 | EP1559191A1 Amplifier bias circuit, method for biasing an amplifier and integrated circuit comprising an amplifier bias circuit |
| 08/03/2005 | CN2715422Y Offset circuit |
| 08/03/2005 | CN1650514A Radio apparatus comprising an amplifier for radio-frequency signals, amplifier for radio-frequency signals and method for amplifying such signals |
| 08/03/2005 | CN1650513A Amplifier circuits and their use in radio frequency transmitters |
| 08/03/2005 | CN1649406A Emphasis circuit |
| 08/03/2005 | CN1649276A Method and apparatus for compensating phase errors in a base station |
| 08/03/2005 | CN1649260A Digital predistorter using power series model |
| 08/03/2005 | CN1649259A Multi-band feed-forward amplifier and adjustment method therefor |
| 08/03/2005 | CN1649258A Multi-band look-up table type predistorter |
| 08/03/2005 | CN1649257A Predistortion device |
| 08/03/2005 | CN1649256A Signal output apparatus |
| 08/03/2005 | CN1649150A Circuit and method for amplifying signal |
| 08/02/2005 | US6925115 Apparatus and method for safely handling asychronous shutdown of pulsewidth modulated output |
| 08/02/2005 | US6925106 Predistortion type distortion compensation apparatus |
| 08/02/2005 | US6924701 Method and apparatus for compensating an amplifier |
| 08/02/2005 | US6924695 Power supply processing for power amplifiers |
| 08/02/2005 | US6924681 Efficient pulse amplitude modulation transmit modulation |
| 08/02/2005 | US6924673 Input/output buffer for protecting a circuit from signals received from external devices and method of use |
| 07/28/2005 | WO2005069484A1 Configurable amplifier circuit |
| 07/28/2005 | WO2005069483A1 Amplifier |
| 07/28/2005 | WO2005069097A1 Transistor arrangement with temperature compensation and method for temperature compensation |
| 07/28/2005 | WO2005067609A2 Improved power supply rejection for pulse width modulated amplifiers and automatic gain control |
| 07/28/2005 | WO2005031968A8 Input/output signals preserver circuit of amplification circuits |
| 07/28/2005 | US20050164671 Reducing active mixer flicker noise |
| 07/28/2005 | US20050164661 Emphasis circuit |
| 07/28/2005 | US20050164656 Distortion compensation amplifying apparatus and base station |
| 07/28/2005 | US20050164649 Low-noise differential bias circuit and differential signal processing apparatus |
| 07/28/2005 | US20050163324 Apparatus and method of limiting power applied to a loudspeaker |
| 07/28/2005 | US20050163306 Method and apparatus for providing a splitter in a notification system |
| 07/28/2005 | US20050163268 Predistortion circuit and method for compensating nonlinear distortion in a digital RF communications transmitter |
| 07/28/2005 | US20050163254 Multi-band feed-forward amplifier and adjustment method therefor |
| 07/28/2005 | US20050163253 Data converter and data conversion method, and transmitter circuit, communications device and electronic device using the same |
| 07/28/2005 | US20050163252 Transmitter predistortion circuit and method therefor |
| 07/28/2005 | US20050163251 Predistortion circuit and method for compensating A/D and other distortion in a digital RF communications transmitter |
| 07/28/2005 | US20050163250 Distortion-managed digital RF communications transmitter and method therefor |
| 07/28/2005 | US20050163208 Equalized signal path with predictive subtraction signal and method therefor |
| 07/28/2005 | US20050162294 Radio frequency digital-to-analog converter |
| 07/28/2005 | US20050162233 Use of analog-valued floating-gate transistors for parallel and serial signal processing |
| 07/28/2005 | US20050162231 Signal output apparatus |
| 07/28/2005 | US20050162228 Power amplifier |
| 07/28/2005 | US20050162226 Radio apparatus comprising an amplifier for radio-frequency signals, amplifier for radio-frequency signals and method for amplifying such signals |
| 07/28/2005 | US20050162225 Multi-band look-up table type predistorter |
| 07/28/2005 | US20050162224 Front stage amplifier with different modes |
| 07/28/2005 | US20050162221 Amplifier apparatus for use with a sensor |
| 07/28/2005 | US20050162217 Bias circuit |
| 07/28/2005 | US20050162216 Semiconductor integrated circuit device |
| 07/28/2005 | DE10360243A1 Voltage dividing circuit for an operational amplifier for a signal alternating voltage adapts divider ratio according to the polarity and output signal voltage level |
| 07/28/2005 | DE102004042371A1 Frequenzselektive Phasen-/Verzögerungs-Regelung für einen Verstärker Frequency-selective phase / deceleration control for an amplifier |
| 07/27/2005 | EP1557995A2 Data converter and data conversion method, and transmitter circuit, communications device and electronic device using the same |
| 07/27/2005 | EP1557960A1 Emphasis circuit |
| 07/27/2005 | EP1557955A1 Transmitter |
| 07/27/2005 | EP1557949A1 Low-noise differential bias circuit and differential signal processing apparatus |
| 07/27/2005 | EP1557942A1 Reflected power suppression circuit |
| 07/27/2005 | EP1556945A2 Predistortion linearizing |
| 07/27/2005 | EP1456942A4 Time division multiplexed pwm amplifier |
| 07/27/2005 | CN1647395A Method and apparatus using base band transformation to improve transmitter performance |
| 07/27/2005 | CN1647369A Deed forward RF power amplifier with high efficiency main amplifier and highly linear error amplifier |
| 07/27/2005 | CN1647368A Electronic amplifier circuit |
| 07/27/2005 | CN1647366A A differential amplifier |
| 07/27/2005 | CN1647365A Self-biased cascode RF power amplifier in sub-micron |