| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
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| 12/12/2013 | US20130329893 Audio output apparatus and method for outputting audio |
| 12/12/2013 | US20130328708 Method and system for flash type analog to digital converter |
| 12/12/2013 | US20130328631 Adaptive amplification circuit |
| 12/12/2013 | US20130328630 Power amplifier |
| 12/12/2013 | US20130328629 Differential amplifier circuit |
| 12/12/2013 | US20130328628 Amplifier circuits and modulation signal generating circuits therein |
| 12/12/2013 | US20130328625 Amplifier and audio device provided with amplifier |
| 12/12/2013 | DE102012009099B4 Schaltungsanordnung mit abstimmbarer Transkonduktanz Circuitry with tunable transconductance |
| 12/11/2013 | EP2671320A1 Integrated circuit, wireless communication unit and method for providing a power supply |
| 12/11/2013 | CN203340024U Vacuum tube power amplifier |
| 12/11/2013 | CN103441743A Circuit and method for processing collected signals of intelligent water ionizer |
| 12/11/2013 | CN103441741A Operational amplifying circuit structure reducing offset voltage based on band-gap reference |
| 12/11/2013 | CN103441740A Weak-signal amplifying circuit |
| 12/11/2013 | CN103441739A Amplification system with one or more channels and amplification method |
| 12/11/2013 | CN103441738A Multimode radio frequency power amplifier circuit and current bias method thereof |
| 12/11/2013 | CN103441737A Transresistance preamplifier circuit |
| 12/11/2013 | CN103441736A Pre-amplifier circuit of CMOS comparator |
| 12/11/2013 | CN103441735A Balance amplifying system and antenna system |
| 12/11/2013 | CN101964661B Comparator for pipeline type analog-digital converter and related signal sampling method |
| 12/11/2013 | CN101820571B 扬声器系统 Speaker system |
| 12/10/2013 | US8605915 Class G audio amplifiers and associated methods of operation |
| 12/10/2013 | US8604883 Class-C power amplifier |
| 12/10/2013 | US8604882 Single-ended to differential amplifier |
| 12/10/2013 | US8604881 Efficiency improvement of doherty power amplifier using supply switching and digitally controlled gate bias modulation of peaking amplifier |
| 12/10/2013 | US8604880 Buffering apparatus and method |
| 12/10/2013 | US8604879 Matched feedback amplifier with improved linearity |
| 12/10/2013 | US8604878 Folded cascode amplifier with an enhanced slew rate |
| 12/10/2013 | US8604877 Differential amplifier |
| 12/10/2013 | US8604876 Current buffer |
| 12/10/2013 | US8604874 Enhanced transformer output demultiplexing method (ETODEM) |
| 12/10/2013 | US8604871 High gain amplifier method using low-valued resistances |
| 12/10/2013 | US8604764 Switching power supply device and a semiconductor integrated circuit |
| 12/05/2013 | WO2013181448A1 Power detector with temperature compensation |
| 12/05/2013 | WO2013181114A1 Switching amplifier with embedded harmonic rejection filter |
| 12/05/2013 | WO2013180733A1 Transformer-based rf power amplifier |
| 12/05/2013 | WO2013179565A1 Amplifying circuit |
| 12/05/2013 | WO2013179399A1 Distortion compensation device and distortion compensation method |
| 12/05/2013 | WO2013179382A1 Plural system amplification device |
| 12/05/2013 | WO2013177976A1 Charge amplifier |
| 12/05/2013 | US20130322197 Power management in an electronic system through reducing energy usage of a battery and/or controlling an output power of an amplifier thereof |
| 12/05/2013 | US20130321087 Low voltage high efficiency gallium arsenide power amplifier |
| 12/05/2013 | US20130321086 Bias circuit and power amplifier having the same |
| 12/05/2013 | US20130321085 Adaptive biasing scheme for an amplifier |
| 12/05/2013 | US20130321084 Apparatus and method for use with an amplifier circuit |
| 12/05/2013 | US20130321082 Semiconductor apparatus comprised of two types of transistors |
| 12/05/2013 | US20130321081 Regulated cascode current mirror scheme for transconductance amplifiers |
| 12/05/2013 | US20130321080 CMOS Linear Differential Distributed Amplifier and Distributed Active Balun |
| 12/05/2013 | US20130321079 Switching amplifier with embedded harmonic rejection filter |
| 12/05/2013 | US20130321076 Assisting A Load Current of a Switching Voltage Regulator |
| 12/05/2013 | DE10361651B4 Verfahren zum Kalibrieren einer Verstärkeranordnung A method for calibrating an amplifier arrangement |
| 12/04/2013 | EP2670049A1 Mobile communications device including an RF transmitter providing impedance fluctuation dampening and related methods |
| 12/04/2013 | EP2548302B1 Feedback loop with parallel forward paths |
| 12/04/2013 | CN203326987U Switch type power amplifier and multichannel bidirectional tower amplification equipment based on switch type power amplifier |
| 12/04/2013 | CN203326962U Operational amplifier improving conversion rate index |
| 12/04/2013 | CN203326961U Electrical level switching circuit with high gain |
| 12/04/2013 | CN203326960U Accurate reference voltage generator in feedforward cancellation amplifier |
| 12/04/2013 | CN203326959U Audio power amplifier circuit |
| 12/04/2013 | CN103430603A Power amplifier, transceiver, and basestation |
| 12/04/2013 | CN103430449A Terrestrial broadcast wave reception-use antenna device and component of same |
| 12/04/2013 | CN103430310A Complementary darlington emitter follower with improved switching speed and improved cross-over control and increased output voltage |
| 12/04/2013 | CN103428135A Single-ring-structure analog predistorter applied in BUC (backup computer) |
| 12/04/2013 | CN103427776A Amplification circuit |
| 12/04/2013 | CN103427775A Differential amplifier circuit |
| 12/04/2013 | CN103427774A Operational transconductance amplifier with enhanced current sinking capacity |
| 12/04/2013 | CN103427773A 轨至轨运算放大器 Rail-to-Rail Operational Amplifiers |
| 12/04/2013 | CN103427772A Closed-loop gain-adjustable operational amplifier |
| 12/04/2013 | CN103427771A Balanced transformer less (BTL) differential type audio power amplification circuit |
| 12/04/2013 | CN103427769A High-speed channel plate based on mercury cadmium telluride detection technology |
| 12/04/2013 | CN102412798B Radio frequency modulation output circuit and gain compensation amplifier thereof |
| 12/04/2013 | CN102281081B 无线通信收发机 The wireless communication transceiver |
| 12/04/2013 | CN101894863B Field-effect transistor |
| 12/03/2013 | US8598954 Doherty amplifier and semiconductor device |
| 12/03/2013 | US8598953 System and method for pre-charging a current mirror |
| 12/03/2013 | US8598951 Linear multi-mode power amplifier for dynamic supply operation |
| 12/03/2013 | US8598506 Solid-state image pickup apparatus and driving method therefor |
| 12/03/2013 | US8598505 Method and apparatus for cancellation of transient voltage spike |
| 11/30/2013 | CA2816788A1 Mobile communications device including an rf transmitter providing impedance fluctuation dampening and related methods |
| 11/28/2013 | WO2013177572A1 Multiple-input multiple-output (mimo) low noise amplifiers for carrier aggregation |
| 11/28/2013 | WO2013177567A1 Low noise amplifiers with transformer-based signal splitting for carrier aggregation |
| 11/28/2013 | WO2013177563A1 Low noise amplifiers with cascode divert switch for carrier aggregation |
| 11/28/2013 | WO2013177555A1 Low noise amplifiers for carrier aggregation |
| 11/28/2013 | WO2013176147A1 Power amplification circuit |
| 11/28/2013 | WO2013175876A1 Switching amplifier, and transmitter using same |
| 11/28/2013 | WO2013175690A1 High-frequency amplification circuit |
| 11/28/2013 | WO2013175004A1 Two-stage operational amplifier in class ab |
| 11/28/2013 | WO2013174476A1 Switched amplifier for variable supply voltage |
| 11/28/2013 | WO2013174412A1 Amplifier circuit |
| 11/28/2013 | WO2013174053A1 Amplifier circuit with cross wiring of direct-current signals and microwave signals |
| 11/28/2013 | WO2013174052A1 Amplifier circuit with cross wiring of direct-current signals and microwave signals |
| 11/28/2013 | WO2013136206A4 Look up table-based sum predistorter for power amplifification with concurrent dual band inputs |
| 11/28/2013 | US20130316663 Matching device, transmitting amplifier, and wireless communication device |
| 11/28/2013 | US20130314164 Low-Noise Amplifier with Impedance Boosting Circuit |
| 11/28/2013 | US20130314163 Integrated stacked power amplifier and rf switch architecture |
| 11/28/2013 | US20130314162 Amplifier arrangement |
| 11/28/2013 | US20130314160 Low noise amplifier and saw-less receiver with low-noise amplifier |
| 11/28/2013 | US20130314159 Operational transconductance amplifier with increased current sinking capability |
| 11/28/2013 | US20130314156 Variable Gain Amplifier |
| 11/28/2013 | US20130314155 Signal level conversion circuit, physical quantity detection device and electronic apparatus |
| 11/28/2013 | DE102013105222A1 Dualmodus-Empfänger mit HF-Splitter, der programmierbare passive Komponenten verwendet Dual-mode receiver used with RF splitter, the programmable passive components |
| 11/28/2013 | DE102012104488A1 Geschalteter Verstärker für variable Versorgungsspannung Switched amplifier for variable supply voltage |