| 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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| 01/18/2005 | US6844779 Optically isolated bias control circuit |
| 01/18/2005 | US6844778 Amplifier device with a selectable active or passive operational mode and ultrasonic apparatus |
| 01/18/2005 | US6844776 Power control and modulation of switched-mode power amplifiers with one or more stages |
| 01/18/2005 | US6844768 Dynamic method for limiting the reverse base-emitter voltage |
| 01/13/2005 | WO2005004325A1 Distortion/efficiency adaptation in a variable-data-rate radio transmitter |
| 01/13/2005 | WO2005004323A1 Adaptive predistortion for a transmit system |
| 01/13/2005 | WO2004066642A3 Signal processing system with baseband noise modulation chopper circuit timing to reduce noise |
| 01/13/2005 | US20050009485 High-frequency amplification circuit |
| 01/13/2005 | US20050009480 System and method for allowing a TDMA/CDMA portable transceiver to operate with closed loop power control |
| 01/13/2005 | US20050009479 Digital transmitter system employing self-generating predistortion parameter lists and adaptive controller |
| 01/13/2005 | US20050008100 Carrier to noise ratio estimations from a received signal |
| 01/13/2005 | US20050008096 Non-linear compensation circuit, transmission apparatus and non-linear compensation method |
| 01/13/2005 | US20050008093 Modulation circuit device, modulation method and radio communication device |
| 01/13/2005 | US20050007212 Tunable filters having variable bandwidth and variable delay |
| 01/13/2005 | US20050007200 Cascode circuit and integrated circuit having it |
| 01/13/2005 | US20050007194 Switched-mode power amplifier using lumped element impedance inverter for parallel combining |
| 01/13/2005 | US20050007193 Power amplifying apparatus and method using pre-distortion and radio communication systen including the same apparatus |
| 01/13/2005 | US20050007191 Amplifier control system with statistical enhancement of resolution of digital control signals |
| 01/13/2005 | US20050007177 Method and circuit for perturbing removable singularities in coupled translinear loops |
| 01/13/2005 | US20050007149 Cascode signal driver with low harmonic content |
| 01/12/2005 | EP1496612A2 Non-linear compensation circuit, transmission apparatus and non-linear compensation method |
| 01/12/2005 | EP1496611A1 Multi-channel power amplifier self-configuring to a bridge or single-ended output, particularly for audio applications |
| 01/12/2005 | CN1564457A Optimized design method of microwave amplifying circuit |
| 01/12/2005 | CN1184736C Negative feedback gain control for common electrode transistor |
| 01/11/2005 | US6842880 Semiconductor integrated circuit designing method and semiconductor device |
| 01/11/2005 | US6842527 Dynamic allocation of power supplied by a power supply and frequency agile spectral filtering of signals |
| 01/11/2005 | US6842486 Signal processing system with baseband noise modulation and noise fold back reduction |
| 01/11/2005 | US6842075 Gain block with stable internal bias from low-voltage power supply |
| 01/11/2005 | US6842074 Base bias circuit, and power amplifier using the base bias circuit |
| 01/11/2005 | US6842066 Bias circuit and semiconductor device |
| 01/06/2005 | WO2005002112A2 Digital baseband system and process for compensating for analog radio transmitter impairments |
| 01/06/2005 | WO2005002106A1 Precorrection of nonlinear distortion with memory |
| 01/06/2005 | WO2005002071A1 Digitally adaptive modulated transmitter |
| 01/06/2005 | WO2005002050A1 Self-oscillating power circuit |
| 01/06/2005 | WO2005002046A1 Integrated power amplifier circuit |
| 01/06/2005 | WO2005002045A1 Integrated power amplifier circuit |
| 01/06/2005 | WO2005002044A1 Integrated power amplifier circuit |
| 01/06/2005 | WO2005002042A2 Integrated power amplifier circuit |
| 01/06/2005 | WO2004086638A3 Method for calibration of a signal receiver |
| 01/06/2005 | WO2003034391A9 Method and system for adjusting the voltage of a precharge circuit |
| 01/06/2005 | WO2003034385A9 System and method for illumination timing compensation in response to row resistance |
| 01/06/2005 | US20050004482 Amplified system for determining parameters of a patient |
| 01/06/2005 | US20050003770 Predistortion circuit for a transmit system |
| 01/06/2005 | US20050002470 Predistortion circuit for a transmit system |
| 01/06/2005 | US20050002469 Envelope elimination and restoration device |
| 01/06/2005 | US20050001684 Digital predistortion system and method for correcting memory effects within an RF power amplifier |
| 01/06/2005 | US20050001683 MOSFET well biasing scheme that mitigates body effect |
| 01/06/2005 | US20050001680 Low-noise preamplifier, in particular, for nuclear magnetic resonance (NMR) |
| 01/06/2005 | US20050001679 Adaptive predistortion for a transmit system with gain, phase and delay adjustments |
| 01/06/2005 | US20050001678 Adaptive predistortion for a transmit system with gain, phase and delay adjustments. |
| 01/06/2005 | US20050001677 Adaptive predistortion for a transmit system |
| 01/06/2005 | US20050001676 Adaptive predistortion for transmit system with gain, phase and delay adjustments |
| 01/06/2005 | US20050001675 Adaptive predistortion for a transmit system with gain, phase and delay adjustments |
| 01/06/2005 | US20050001674 Adaptive predistortion for a transmit system |
| 01/06/2005 | US20050001150 Light-receiving circuit that protects breakdown of the avalanche photodiode by the photo current generated thereby |
| 01/06/2005 | CA2531041A1 Integrated power amplifier circuit |
| 01/06/2005 | CA2531038A1 Integrated power amplifier circuit |
| 01/06/2005 | CA2531018A1 Integrated power amplifier circuit |
| 01/06/2005 | CA2531013A1 Integrated power amplifier circuit |
| 01/05/2005 | EP1494361A1 Communication apparatus |
| 01/05/2005 | EP1494351A1 Method and corresponding circuit structure to correlate the transconductance of transistors of different type |
| 01/05/2005 | EP1476942A4 Apparatus and method for controlling adaptive circuits |
| 01/05/2005 | EP1433236A4 Power supply regulation and protection circuit for audio power amplifier |
| 01/05/2005 | EP1430596B1 Temperature-stabilised amplifier circuit |
| 01/05/2005 | EP1310018A4 Switched beam antenna architecture |
| 01/05/2005 | DE10325634A1 Rauscharmer Vorverstärker, insbesondere für die Kernspinresonanz(=NMR) A low noise preamplifier, particularly for the nuclear magnetic resonance (NMR) |
| 01/05/2005 | CN1561573A 转换功率放大器 Conversion PA |
| 01/05/2005 | CN1561572A Self-boosting circuit for a power amplifier |
| 01/05/2005 | CN1561571A An adaptive linearization technique for communication building block |
| 01/05/2005 | CN1183703C Second order predistorter for return laser transmitter |
| 01/05/2005 | CN1183666C Difference frequency impedance transformation circuits and methods for providing same in power amplifier systems |
| 01/05/2005 | CN1183663C 高频放大器 High-frequency amplifier |
| 01/05/2005 | CN1183661C Non-linear compensator |
| 01/05/2005 | CN1183660C Integrated free plate automatic calibration of low distortion amplifier |
| 01/05/2005 | CN1183405C Operational amplifying circuit, driving circui and driving method |
| 01/04/2005 | US6839549 System and method of RF power amplification |
| 01/04/2005 | US6838942 Efficient class-G amplifier with wide output voltage swing |
| 01/04/2005 | US6838941 Multi-band power amplifier |
| 01/04/2005 | US6838940 High frequency power amplifier circuit |
| 01/04/2005 | US6838938 Communication system and arrangements comprising such a communication system |
| 01/04/2005 | US6838936 Low-noise amplifier device having negative feedback via a controlled current source, and method of using the amplifier device |
| 01/04/2005 | US6838935 Signal amplifier |
| 01/04/2005 | US6838934 Feedforward amplifier with dual loop |
| 01/04/2005 | US6838932 Power amplifier capable of adjusting operating point |
| 01/04/2005 | US6838931 Power amplifier circuit and method using bandlimited signal component estimates |
| 12/30/2004 | US20040266368 Power control for a transmitter |
| 12/30/2004 | US20040266366 Multi-mode amplifier system |
| 12/30/2004 | US20040264597 Digital pre-distortion for the linearization of power amplifiers with asymmetrical characteristics |
| 12/30/2004 | US20040264596 Digital pre-distortion for the linearization of power amplifiers with asymmetrical characteristics |
| 12/30/2004 | US20040264527 Laser power control circuit |
| 12/30/2004 | US20040264091 Electronic device, and circuit and method for protecting the same |
| 12/30/2004 | US20040263257 Method to reduce unwanted oscillations in high speed, high gain or transimpedance amplifiers |
| 12/30/2004 | US20040263256 High frequency power amplifier circuit, high frequency power amplifier electronic component and method thereof |
| 12/30/2004 | US20040263254 High frequency power amplifier circuit and radio communication system |
| 12/30/2004 | US20040263253 Apparatus, amplifier, system and method for receiver equalization |
| 12/30/2004 | US20040263252 Output stage, amplifier and associated method for limiting an amplifier output |
| 12/30/2004 | US20040263251 Wideband amplifier |
| 12/30/2004 | US20040263250 Circuit arrangement having a transimpedance amplifier connected to a current limiter circuit |
| 12/30/2004 | US20040263249 Feedforward linear amplifier |
| 12/30/2004 | US20040263248 Integrated power amplifier circuit |