| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
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| 03/13/2001 | US6201441 Semiconductor circuit |
| 03/13/2001 | US6201440 Power amplifier and control circuit thereof |
| 03/13/2001 | US6201439 Power splitter/ combiner circuit, high power amplifier and balun circuit |
| 03/13/2001 | US6201434 Semiconductor integrated circuit device having an oscillation circuit using reference current source independent from influence of variation of power supply voltage and threshold voltage of transistor |
| 03/13/2001 | US6201366 Method and apparatus for improved transition from pulse width modulation to linear control |
| 03/08/2001 | WO2001016663A1 Load device |
| 03/08/2001 | WO2000072627A3 Transducer driver |
| 03/07/2001 | EP1081850A2 Power amplifying apparatus for mobile phone |
| 03/07/2001 | EP1081849A1 Dual band amplifier circui and radio frequency receiving unit |
| 03/07/2001 | EP1081573A1 High-precision biasing circuit for a cascoded CMOS stage, particularly for low noise amplifiers |
| 03/07/2001 | EP1080512A1 Microwave channelized bandpass filter having two channels |
| 03/07/2001 | CN2422779Y High gain non-self-exciting antenna amplifier |
| 03/07/2001 | CN2422778Y Electric current audio frequency amplifier |
| 03/07/2001 | CN1286866A Display driver apparatus |
| 03/07/2001 | CN1062997C Grounded base transistor amplifier |
| 03/07/2001 | CN1062996C Tuned amplifier |
| 03/07/2001 | CN1062995C Negative-resistance-compensated microwave buffer |
| 03/06/2001 | US6199207 Method and apparatus for routing signals through a cable television signal distribution amplifier |
| 03/06/2001 | US6199092 Semiconductor arithmetic circuit |
| 03/06/2001 | US6198498 Dual forward and reverse test points for amplifiers |
| 03/06/2001 | US6198361 Contactless IC card system |
| 03/06/2001 | US6198352 Radio frequency low noise amplifier fabricated in complementary metal oxide semiconductor technology |
| 03/06/2001 | US6198350 Signal amplifier with fast recovery time response, efficient output driver and DC offset cancellation capability |
| 03/06/2001 | US6198348 Differential circuit with reverse isolation |
| 03/06/2001 | US6198347 Driving circuits for switch mode RF power amplifiers |
| 03/06/2001 | US6198329 Auto zero circuitry and associated method |
| 03/06/2001 | US6198315 Current detection circuit |
| 03/06/2001 | US6198309 Emitter follower output with programmable current |
| 03/06/2001 | US6198267 Current generator for delivering a reference current of which the value is proportional to the absolute temperature |
| 03/06/2001 | US6198138 Analogue misfet with threshold voltage adjuster |
| 03/01/2001 | WO2001015335A1 Method and arrangement for power amplification in a basestation |
| 03/01/2001 | WO2001015316A1 Method and apparatus for matching common mode output voltage at a switched-capacitor to continuous-time interface |
| 03/01/2001 | WO2001015262A1 Radio repeater using the non-radiative dielectric waveguide |
| 02/28/2001 | EP1079519A1 A power rising electronic device |
| 02/28/2001 | EP1079518A2 Method and apparatus for an automatic predistortion system |
| 02/28/2001 | EP1079515A1 MOSFET amplifier circuit |
| 02/28/2001 | EP1079513A1 Oscillating apparatus including two-band resonance circuit |
| 02/28/2001 | EP1078456A1 High frequency receiver range switching circuit |
| 02/28/2001 | CN1285984A Method and apparatus for determining an operating point of a non-linear amplifier of a communication channel |
| 02/28/2001 | CN1285973A Linear RF power amplifier with optically activated switches |
| 02/28/2001 | CN1285653A Electronic tuner |
| 02/27/2001 | US6194968 Temperature and process compensating circuit and controller for an RF power amplifier |
| 02/27/2001 | US6194967 Current mirror circuit |
| 02/27/2001 | US6194966 Cmos class ab operational amplifier operating from a single 1.5v cell |
| 02/27/2001 | US6194962 Adaptive operational amplifier offset voltage trimming system |
| 02/27/2001 | US6194959 Active filter circuit |
| 02/27/2001 | US6194955 Current source switch circuit |
| 02/27/2001 | US6194941 DC offset compensation circuit for a signal amplifier |
| 02/27/2001 | US6194921 Analog signal amplifier circuit using a differential pair of MOSFETs (insulated-gate field effect transistors) in an input stage |
| 02/27/2001 | US6194920 Semiconductor circuit |
| 02/27/2001 | US6194919 Main amplifier |
| 02/27/2001 | US6194887 Internal voltage generator |
| 02/27/2001 | US6194698 Electro-optical sensor circuitry |
| 02/27/2001 | CA2190904C Rf filter arrangement with image trap |
| 02/21/2001 | EP0856195A4 Biasing arrangement for linear detector array |
| 02/21/2001 | CN1062395C Method and arrangement for controlling the operation of high-frequency power amplifier |
| 02/21/2001 | CN1062394C Coplanar waveguide-mounted flip chip |
| 02/21/2001 | CN1062393C Offset cancel circuit and offset cancel system using the same |
| 02/20/2001 | US6191656 High efficiency, unilateral dual stage RF amplifier |
| 02/20/2001 | US6191655 Six inverting amplifier transconductance stage and methods for its use |
| 02/20/2001 | US6191654 Differential amplifier circuit |
| 02/20/2001 | US6191653 Circuit and method for linearizing amplitude modulation in a power amplifier |
| 02/20/2001 | US6191650 Class d amplifier with pulse width modulation and a very low power consumption |
| 02/20/2001 | US6191637 Switched capacitor bias circuit for generating a reference signal proportional to absolute temperature, capacitance and clock frequency |
| 02/20/2001 | US6191622 Time interleaved common mode feedback circuit with process compensated bias |
| 02/15/2001 | WO2001011628A1 Comparators, memory devices, comparison methods and memory reading methods |
| 02/14/2001 | EP1076323A2 Galvanic isolation coupling of current loop |
| 02/14/2001 | EP1075733A1 Class-ab output stages with improved distortion performance |
| 02/14/2001 | EP1075732A1 A method in the compensation of unlinearities in an amplifier, an amplifier, and uses of the method and the amplifier |
| 02/13/2001 | US6188877 Dual-band, dual-mode power amplifier with reduced power loss |
| 02/13/2001 | US6188284 Distributed gain line driver amplifier including improved linearity |
| 02/13/2001 | US6188283 Amplifier and semiconductor device therefor |
| 02/13/2001 | US6188282 Differential amplifier with reduced even order non-linearity and associated methods |
| 02/13/2001 | US6188281 Linear transconductance circuits having class AB amplifiers parallel coupled with concave compensation circuits |
| 02/13/2001 | US6188280 Differential amplifier with gain linearization through transconductance compensation |
| 02/13/2001 | US6188279 Low cost miniature broadband linearizer |
| 02/13/2001 | US6188277 Power amplifier having monitoring and circuit protection |
| 02/13/2001 | US6188276 Power amplifier |
| 02/13/2001 | CA2235019C A power-conserving linear broadband rf amplifier |
| 02/13/2001 | CA2178665C Power shared linear amplifier network |
| 02/08/2001 | WO2001010047A1 Isolator with built-in power amplifier |
| 02/08/2001 | WO2001010017A1 Break-before-make distortion compensation for a digital amplifier |
| 02/08/2001 | WO2001010016A1 Dynamic switching frequency control for a digital switching amplifier |
| 02/08/2001 | WO2001010015A1 Driving circuits for switch mode rf power amplifiers |
| 02/08/2001 | WO2001010013A1 High-efficiency modulating rf amplifier |
| 02/08/2001 | WO2001010012A1 Dc offset calibration for a digital switching amplifier |
| 02/08/2001 | WO2000046919A3 A circuit for compensating noise and errors from an output stage of a digital amplifier |
| 02/08/2001 | DE19911463C1 Leseverstärkeranordnung mit Feldeffekttransistor mit kurzer Kanallänge und einstellbarer Einsatzspannung Sense amplifier arrangement with field-effect transistor with a short channel length, and adjustable threshold voltage |
| 02/08/2001 | DE10035065A1 Schaltung zur Leistungsverstärkung mit Versorgungseinstellung zur Steuerung der Leistung des benachbarten Kanals und des übernächsten Kanals Circuit for power amplification with care setting to control the power of the adjacent channel and of the next channel |
| 02/08/2001 | DE10022770A1 Integrated circuit current read-amplifier design, has output voltage level control circuit provided with first and second resistors and NMOS transistor connected to their point |
| 02/08/2001 | CA2380772A1 Dc offset calibration for a digital switching amplifier |
| 02/08/2001 | CA2380324A1 Break-before-make distortion compensation for a digital amplifier |
| 02/08/2001 | CA2380273A1 Dynamic switching frequency control for a digital switching amplifier |
| 02/07/2001 | EP1075081A2 Detector driven bias circuit for power transistors |
| 02/07/2001 | CN2418618Y USB digital audio-frequency power amplifier |
| 02/07/2001 | CN1283327A Low voltage transistor biasing |
| 02/06/2001 | US6185450 Digital sliding pole fast-restore for an electrocardiograph display |
| 02/06/2001 | US6185182 Power sharing amplifier system for a cellular communications system |
| 02/06/2001 | US6185060 Changeover circuit in tape recorder |
| 02/06/2001 | US6185057 Method and apparatus for increasing the speed of write driver circuitry |