| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
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| 07/12/2000 | EP1018801A2 Advanced amplifier, transmission unit and cellular telephone using the same |
| 07/12/2000 | EP0764364B1 An amplifier stage having a switchable gain and reduced distortion |
| 07/12/2000 | CN2387669Y Vacuum tube tandem amplifying circuit |
| 07/12/2000 | CN1259796A Darlington with 2x times power enlargement and its ultra fidelity open loop constant current power discharge |
| 07/12/2000 | CA2293924A1 Fet balun transformer |
| 07/11/2000 | US6087901 Tuning amplifier |
| 07/11/2000 | US6087900 Parallel push-pull amplifier using complementary device |
| 07/11/2000 | US6087899 Optical transmitter module, and semiconductor integrated circuit capable of increasing gain and band of amplifier constructed from FET |
| 07/11/2000 | US6087897 Offset and non-linearity compensated amplifier and method |
| 07/11/2000 | US6087821 Reference-voltage generating circuit |
| 07/11/2000 | US6087819 Current mirror circuit with minimized input to output current error |
| 07/11/2000 | US6087813 Internal voltage generation circuit capable of stably generating internal voltage with low power consumption |
| 07/06/2000 | WO2000039935A1 Control of gain and power consumption in a power amplifier |
| 07/06/2000 | WO2000039921A1 Mobile communication unit |
| 07/05/2000 | EP1017171A1 Phase control device with a plurality of distributed amplifier structures with switchable active elements for constituting a programmable length line |
| 07/05/2000 | EP1017164A2 Current mirror with a constant current for a wide range of output load impedance |
| 07/05/2000 | CN1259242A Power amplication system with intelligent control of amplifier modules |
| 07/05/2000 | CN1258962A Electric circuit apparatus for producing output signal |
| 07/04/2000 | US6084760 Device for driving self arc-extinguishing type power element |
| 07/04/2000 | US6084478 Transimpedance amplifier with automatic gain control |
| 07/04/2000 | US6084477 Class AB output stage for an audio power amplifier |
| 07/04/2000 | US6084476 Operational amplifier |
| 07/04/2000 | US6084475 Active compensating capacitive multiplier |
| 07/04/2000 | US6084474 Auto gain controller having temperature compensation function |
| 07/04/2000 | US6084468 Method and apparatus for high efficiency wideband power amplification |
| 07/04/2000 | US6084466 Variable gain current summing circuit with mutually independent gain and biasing |
| 07/04/2000 | US6084465 Method for time constant tuning of gm-C filters |
| 07/04/2000 | US6084461 Charge sensitive amplifier with high common mode signal rejection |
| 07/04/2000 | US6084273 Analogue misfet with threshold voltage adjuster |
| 07/04/2000 | US6084232 Optical receiver pre-amplifier which prevents ringing by shunting an input current of the pre-amplifier |
| 06/29/2000 | WO2000038315A1 Level shift circuit |
| 06/29/2000 | WO2000038314A1 Linearized amplifier core |
| 06/29/2000 | WO2000038107A1 A high gain input stage for a radio frequency identification (rfid) transponder and method therefor |
| 06/29/2000 | DE19857525A1 Power amplifier with switched end stage |
| 06/29/2000 | DE19857524A1 Gradient amplifier for magnetic resonance imaging apparatus |
| 06/29/2000 | CA2355956A1 Level shift circuit |
| 06/28/2000 | EP1014571A2 Audio apparatus of negative impedance driving with adaptive gain control |
| 06/28/2000 | EP1014567A2 Improvements in or relating to an operational amplifier |
| 06/28/2000 | EP1014566A2 Dual mode class D amplifier |
| 06/28/2000 | EP1014563A1 Amplifier arrangement with voltage gain and reduced power consumption |
| 06/28/2000 | EP1014288A1 Improved method and circuit arrangement for signal processing |
| 06/28/2000 | EP1012967A1 A linear rf power amplifier with optically activated switches |
| 06/28/2000 | CN1258393A PWM amplifier |
| 06/28/2000 | CN1258054A Improved method and circuit arrangement for processing signals |
| 06/27/2000 | US6081694 Mobile telephone transmitter with internal auxiliary matching circuit |
| 06/27/2000 | US6081558 Apparatus and method for low power operation with high sensitivity in a communications receiver |
| 06/27/2000 | US6081515 Method and arrangement relating to signal transmission |
| 06/27/2000 | US6081214 A/D conversion device provided with a calibration arrangement |
| 06/27/2000 | US6081162 Robust method and apparatus for providing a digital single-ended output from a differential input |
| 06/27/2000 | US6081160 Method and apparatus for increasing the bandwidth, and reducing the size, of the DC feed network for wideband RF amplifiers using selective placement of high dielectric constant material |
| 06/27/2000 | US6081139 Differential amplifier with lateral bipolar transistor |
| 06/27/2000 | CA2227862C Field effect transistor cable television line amplifier |
| 06/22/2000 | WO2000013309A8 Differential amplifier with gain linearization through transconductance compensation |
| 06/21/2000 | EP1011194A2 High speed differential optoelectronic receiver |
| 06/21/2000 | EP1011193A1 Amplified photoelectric detector |
| 06/21/2000 | EP1010240A1 Class d amplifier with switching control |
| 06/21/2000 | EP1010239A1 Radar transmitter |
| 06/21/2000 | EP1010237A1 High-order multipath operational amplifier with dynamic offset reduction, controlled saturation current limiting, and current feedback for enhanced conditional stability |
| 06/21/2000 | EP0914711B1 Power amplifier |
| 06/21/2000 | DE19858078A1 Signal amplifier for telecommunications or sound studio equipment has two non-inverting operational amplifiers and subtraction stage employing complementary difference amplifiers |
| 06/21/2000 | CN1257622A Power interface circuit for a TDMA transmitter |
| 06/21/2000 | CN1257620A Active phase splitter |
| 06/21/2000 | CN1257348A Comparing unit with biasing and comparison circuit |
| 06/21/2000 | CN1257343A Low-noise and low distortion D type amplifier |
| 06/20/2000 | US6078797 Method of controlling received signal level |
| 06/20/2000 | US6078222 Controller-based radio frequency amplifier module and method |
| 06/20/2000 | US6078221 Field effect transistor amplifier |
| 06/20/2000 | US6078220 Complementary class AB current amplifier |
| 06/20/2000 | US6078218 Negative amplifier circuit |
| 06/20/2000 | US6078217 Electromagnetic, compatible clocked amplifier for a.c./d.c. current amplification |
| 06/20/2000 | US6078214 High efficiency class DB power amplifier |
| 06/20/2000 | US6078207 Output amplitude regulating circuit |
| 06/20/2000 | US6078169 Amplifier for interpolating the power supply from multiple supply voltages |
| 06/15/2000 | WO2000035084A1 Microwave amplifier |
| 06/15/2000 | WO2000035083A1 Low power supply cmos differential amplifier topology |
| 06/15/2000 | WO2000035082A1 Device for amplifying signals |
| 06/15/2000 | WO2000035081A1 Low noise resistively matched amplifier |
| 06/15/2000 | WO2000035080A1 Amplitude modulation to phase modulation cancellation method in an rf amplifier |
| 06/15/2000 | WO2000035079A1 An amplifier |
| 06/15/2000 | WO1999056339A9 Microwave channelized bandpass filter having two channels |
| 06/15/2000 | DE19959180A1 Differential amplifier for high frequency amplification at low voltage, has input stage coupled to load circuit with features for dynamic compensation |
| 06/15/2000 | DE19951620A1 Pull-up type differential bus driver for signal transmission between semiconductor chips, supplies higher voltage to PMOS transistor only when voltage of either of signal lines is higher |
| 06/15/2000 | DE19854847A1 Integrated amplifier for high frequency operation, has two separate amplification stages with individual inputs coupled by switching stage. |
| 06/14/2000 | CN1256554A New-type CMOS charge pump and its cascade method |
| 06/14/2000 | CN1053537C Electrical charge transfer apparatus |
| 06/14/2000 | CN1053535C Isolated amplifier |
| 06/14/2000 | CA2286924A1 Amplifier arrangement with voltage gain and reduced power consumption |
| 06/13/2000 | US6075995 Amplifier module with two power amplifiers for dual band cellular phones |
| 06/13/2000 | US6075414 High frequency amplifier having a variable attenuator connected to the base of an amplifier FET |
| 06/13/2000 | US6075412 Linearization for power amplifiers |
| 06/13/2000 | US6075405 Constant current circuit |
| 06/08/2000 | WO2000033460A1 Class-ab output stages with improved distortion performance |
| 06/08/2000 | WO2000033459A1 Constant gain, constant phase rf power block |
| 06/08/2000 | WO2000033458A1 Receiver for rf signals |
| 06/08/2000 | WO2000033038A1 Photodetector device |
| 06/08/2000 | DE19844741C1 Schaltungsanordnung zur Arbeitspunktstabilisierung eines Transistors Circuit arrangement for operating point stabilization of a transistor |
| 06/08/2000 | DE19827702C2 Verstärkerschaltung mit aktiver Arbeitspunkteinstellung Amplifier circuit with active bias setting |
| 06/08/2000 | CA2354066A1 Constant gain, constant phase rf power block |
| 06/07/2000 | EP1006650A2 BTL amplifier apparatus |
| 06/07/2000 | EP1006648A2 Active compensating capacitive multiplier |