| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
|---|
| 07/24/2013 | CN103219957A Power amplifier with digital predistortion compensation and combiner offset function |
| 07/24/2013 | CN103219956A Power amplifier circuit and control method |
| 07/24/2013 | CN103219955A Aging method and aging device of radio frequency power amplifier |
| 07/24/2013 | CN103219954A Amplifier circuit and method for improving the dynamic range thereof |
| 07/24/2013 | CN103219949A Power amplifier with modified doherty topology |
| 07/24/2013 | CN103219948A High-efficiency power amplifier with error signal compensation function |
| 07/24/2013 | CN102624337B 2-fold switched capacitor amplifier insensitive to capacitor mismatch and sampling signal common mode |
| 07/24/2013 | CN101674057B Rail-to-rail operational amplifier capable of lowering power consumption |
| 07/23/2013 | US8494476 Monolithic LNA support IC |
| 07/23/2013 | US8494171 Energy saving PWM sound device |
| 07/23/2013 | US8494096 Automatically setting an operative state of a wideband amplifier |
| 07/23/2013 | US8493154 Linearity enhancement on cascode gain block amplifier |
| 07/23/2013 | US8493153 Narrowband amplifier with improved interference suppression |
| 07/23/2013 | US8493152 Power amplifier |
| 07/23/2013 | US8493150 Class-AB output stage |
| 07/23/2013 | US8493149 Amplifier circuit with variable tuning precision |
| 07/23/2013 | US8493148 Gain enhancement for cascode structure |
| 07/23/2013 | US8493147 Differential amplifier and source driver |
| 07/23/2013 | US8493146 Amplifier using fast discharging reference |
| 07/23/2013 | US8493051 Fast-settling precision voltage follower circuit and method |
| 07/23/2013 | US8492699 Photodetectors useful as ambient light sensors having an optical filter rejecting a portion of infrared light |
| 07/18/2013 | US20130181779 Systems and methods to adjust the bias of an amplifier |
| 07/18/2013 | US20130181778 High Fidelity Current Dumping Audio Amplifier With Combined Feedback-Clean Feedback |
| 07/18/2013 | US20130181777 Voltage regulator |
| 07/18/2013 | US20130181776 Rail-to-rail comparator |
| 07/18/2013 | US20130181775 Rail-to rail input circuit |
| 07/18/2013 | US20130181773 Multi-way doherty amplifier |
| 07/18/2013 | US20130181772 Primary-side feedback controlled ac/dc converter with an improved error amplifier |
| 07/18/2013 | US20130181771 Light receiving circuit and photo-coupling type insulated circuit |
| 07/18/2013 | DE102012200524A1 Verstärkervorrichtung sowie Verfahren zum Aktivieren einer oder der Verstärkervorrichtung Amplifier device and method for activating one or the amplifier device |
| 07/17/2013 | EP2614585A2 Radio frequency communications system |
| 07/17/2013 | EP2614584A2 Power amplifier with transistor input mismatching |
| 07/17/2013 | EP2614554A2 Lcl high power combiner |
| 07/17/2013 | EP2614346A1 Method and circuit for processing a signal supplied by a piezoelectric sensor, and pressure-measuring device for piston engine |
| 07/17/2013 | CN203071881U Multi-system and multi-signal hybrid transmission total hot backup explosive-proof bilateral amplifier |
| 07/17/2013 | CN203071880U Electronic tube and transistor mixed differential amplification circuit |
| 07/17/2013 | CN203071879U Voltage amplification system |
| 07/17/2013 | CN203071878U Wideband direct-current amplifier based on voltage-controlled operational amplifier |
| 07/17/2013 | CN203071877U Low-frequency power amplifying circuit |
| 07/17/2013 | CN203071876U High-fidelity transistor audio power amplifier |
| 07/17/2013 | CN203071875U Biasing circuit capable of reducing standby currents of radio frequency power amplifier |
| 07/17/2013 | CN203071873U Pre-corrected power amplifier structure |
| 07/17/2013 | CN103210583A Current mode power amplifier providing harmonic distortion suppression |
| 07/17/2013 | CN103210582A RF power amplifier circuit mismatch tolerance |
| 07/17/2013 | CN103209016A Repeater and power amplifier thereof |
| 07/17/2013 | CN103208981A Comparator and amplifier |
| 07/17/2013 | CN103208970A Gate voltage temperature compensation circuit and method of radio frequency power amplifier |
| 07/17/2013 | CN101473531B Integrated implementation of a voltage boost follower and method therefor |
| 07/17/2013 | CA2802608A1 Systems and methods for protecting electrical wire connections from overheating |
| 07/16/2013 | US8489052 Variable gain amplifier for low voltage applications |
| 07/16/2013 | US8488652 Systems and methods for blind equalization in a digital receiver |
| 07/16/2013 | US8487706 Stacked linear power amplifier with capacitor feedback and resistor isolation |
| 07/16/2013 | US8487704 Reference voltage generator for biasing an amplifier |
| 07/16/2013 | US8487703 Radiofrequency amplifier |
| 07/16/2013 | US8487701 Circuit for amplifying a signal representing a variation in resistance of a variable resistance and corresponding sensor |
| 07/16/2013 | US8487700 Pre-driver and digital transmitter using the same |
| 07/16/2013 | US8487695 Differential source follower having 6dB gain with applications to WiGig baseband filters |
| 07/16/2013 | US8487687 Output buffer circuit and method for avoiding voltage overshoot |
| 07/16/2013 | US8485993 Switched resonant ultrasonic power amplifier system |
| 07/11/2013 | US20130176140 Enhanced Transmitter and Method for a Nuclear Magnetic Resonance Logging Tool |
| 07/11/2013 | US20130176082 Reference voltage generation circuit, oscillation circuit including the same and method for calibrating oscillation frequency of oscillation circuit |
| 07/11/2013 | US20130176079 Radio frequency power amplifier |
| 07/11/2013 | US20130176078 Apparatuses and methods for low power current mode sense amplification |
| 07/11/2013 | DE10260657B4 Audioverstärker mit Spannungsbegrenzung in Reaktion auf den Spektralgehalt Audio amplifier with voltage limiting in response to the spectral content |
| 07/11/2013 | DE102004001434B4 Speicherbauelement Memory device |
| 07/10/2013 | EP2613450A1 Saw-less receiver with RF frequency translated BPF |
| 07/10/2013 | EP2613438A1 Amplifier |
| 07/10/2013 | EP2613437A2 Multi-stage fully differential amplifier with controlled common mode voltage |
| 07/10/2013 | EP2612441A2 Buffering apparatus and method |
| 07/10/2013 | EP2612211A1 Current source with active common mode rejection |
| 07/10/2013 | CN203057089U Amplifier capable of controlling operating mode |
| 07/10/2013 | CN203057088U Sound-cracking-resistant type active audio machine |
| 07/10/2013 | CN203057087U Microphone amplifying circuit |
| 07/10/2013 | CN203057086U Single transistor based microphone amplifying circuit |
| 07/10/2013 | CN203057085U Enhanced microphone amplifying circuit |
| 07/10/2013 | CN203057084U Dual-proportional integration type amplifier |
| 07/10/2013 | CN203057083U High-accuracy negative feedback active audio machine |
| 07/10/2013 | CN203057082U Voice frequency amplifying circuit with filtering function |
| 07/10/2013 | CN203057081U Power amplifier of Q-waveband millimeter waves |
| 07/10/2013 | CN203057080U Digital audio power amplification system |
| 07/10/2013 | CN203057079U Domain structure of optical communication trans-impedance amplifier based on RF-CMOS (Radio Frequency-Complementary Metal Oxide Semiconductor) process |
| 07/10/2013 | CN203057078U Amplifying circuit with filtering function |
| 07/10/2013 | CN203057077U Enhanced gain-type amplifying circuit |
| 07/10/2013 | CN203057075U Low-noise amplifier |
| 07/10/2013 | CN1819716B Loud speaker with double magnetic pole and moving coil and its playing and controlling circuit |
| 07/10/2013 | CN103201952A Ota-based current-mode filter and oscillator |
| 07/10/2013 | CN103201951A Bias control circuit |
| 07/10/2013 | CN103199809A In-phase bipolar high-voltage proportional amplification circuit |
| 07/10/2013 | CN103199808A Intermodulation offset device for passive device |
| 07/10/2013 | CN103199807A Split compensation two-stage operational amplifier based on inverter input structure |
| 07/10/2013 | CN103199806A Programmable analog unit for processing sensor signal |
| 07/10/2013 | CN103199805A Multi-band matching network for RF power amplifiers |
| 07/10/2013 | CN103199804A Wideband amplifier with high-power feedback structure |
| 07/10/2013 | CN103199803A LNA having a post-distortion mode and a high-gain mode and control method thereof |
| 07/10/2013 | CN103199797A Amplifying circuit with self-adaptive combining cancellation function |
| 07/10/2013 | CN102075146B G class audio frequency amplification system and method |
| 07/10/2013 | CN101902671B Audio processing device and method |
| 07/10/2013 | CN101873110B Radio frequency matcher |
| 07/10/2013 | CN101785181B Signal amplifier structure for radio transmitter |
| 07/10/2013 | CN101753159B RF (radio frequency) receiving front end with diversified gaining modes and capable of automatic tuning |