| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
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| 05/06/1998 | EP0839406A2 Gain control |
| 05/06/1998 | CN2281043Y Silicon double-pole integrated amplifier |
| 05/06/1998 | CN2281042Y High-fidelity electron earphone power amplifier |
| 05/06/1998 | CN1180943A Filter with low-noise amplifier |
| 05/05/1998 | US5748754 Sound system gain and equalization circuit |
| 05/05/1998 | US5748428 Pulse width modulation and protection circuit |
| 05/05/1998 | US5748040 Fully differential high gain cascode amplifier |
| 05/05/1998 | US5748035 Channel coupled feedback circuits |
| 05/05/1998 | US5748030 Bias generator providing process and temperature invariant MOSFET transconductance |
| 05/05/1998 | US5748023 Integrator with output-compensating capability |
| 04/29/1998 | EP0838901A1 Analogue to digital conversion device with regulated input dynamic range |
| 04/29/1998 | EP0732004B1 Switch-mode power supply for a power amplifier |
| 04/29/1998 | EP0655176B1 Amplifier stage with low thermal distortion |
| 04/28/1998 | US5745857 Gaas power amplifier for analog/digital dual-mode cellular phones |
| 04/28/1998 | US5745587 Hearing aid amplifier circuitry |
| 04/28/1998 | US5745010 Operational amplifier |
| 04/28/1998 | US5745009 Semiconductor device including a power amplifier and a mobile telecommunication terminal including such a semiconductor device |
| 04/28/1998 | US5745008 High voltage operational amplifier |
| 04/28/1998 | US5745007 CMOS differential amplifier having constant transconductance and slew rate |
| 04/28/1998 | US5745002 Low voltage, switched capacitance circuit employing switched operational amplifiers with maximized voltage swing |
| 04/28/1998 | US5744999 CMOS current source circuit |
| 04/28/1998 | US5744987 Signal converter for reproducing audio signals recorded on a film medium |
| 04/23/1998 | WO1998016998A1 Hybrid matrix amplifier |
| 04/23/1998 | WO1998016997A1 Multi-stage high efficiency linear power amplifier |
| 04/23/1998 | DE19732671A1 Hysteresis input buffer for semiconductor component |
| 04/23/1998 | DE19709767C1 Controlling several coupled end stages esp. with gradient amplifier of nuclear resonance tomography |
| 04/23/1998 | CA2267982A1 Hybrid matrix amplifier |
| 04/22/1998 | EP0837559A1 High efficiency linear power amplifier of plural frequency bands and high efficiency power amplifier |
| 04/22/1998 | EP0837558A1 A CMOS op-amp input stage with constant small signal gain from rail-to-rail |
| 04/22/1998 | EP0837557A1 High frequency intensity amplifier circuitry arrangement for indoor cable television |
| 04/22/1998 | EP0836766A2 Degenerated differential pair with controllable transconductance |
| 04/22/1998 | CN1179647A Power amplifier circuit |
| 04/21/1998 | US5742584 For a land mobile radio system |
| 04/21/1998 | US5742551 Semiconductor memory device |
| 04/21/1998 | US5742248 Differential amplifier with signal-dependent offset, and multi-step dual-residue analog-to-digital converter including such a differential amplifier |
| 04/21/1998 | US5742206 Gain control circuit and variable gain power amplifier using same |
| 04/21/1998 | US5742205 Field effect transistor cable television line amplifier |
| 04/21/1998 | US5742204 Digitally programmable differential attenuator with tracking common mode reference |
| 04/21/1998 | US5742199 Filter circuit and electronic apparatus |
| 04/21/1998 | US5742154 Multi-stage current feedback amplifier |
| 04/21/1998 | US5742047 Highly uniform five volt CMOS image photodiode sensor array with improved contrast ratio and dynamic range |
| 04/16/1998 | WO1998016006A1 Coplanar waveguide amplifier |
| 04/15/1998 | EP0836275A1 High speed switched OP-AMP for low supply voltage applications |
| 04/15/1998 | EP0836274A1 Common mode control circuit for a switchable fully differential OP-AMP |
| 04/15/1998 | EP0836273A1 Semiconductor device |
| 04/15/1998 | EP0836272A1 Low-noise amplifier arrangement |
| 04/15/1998 | EP0836203A2 Amplifying unit comprising an input transformer capable of contributing to a wider frequency band of a broadband amplifier |
| 04/15/1998 | EP0835551A1 Output stage for buffering signals |
| 04/15/1998 | EP0716783B1 Amplifier stage with a db-linear output voltage |
| 04/15/1998 | CN1179032A Switch amplifier closed loop double comparator modulating technology |
| 04/15/1998 | CN1179031A 放大系统 Amplification system |
| 04/15/1998 | CN1179030A N way power distributor/synthesizer |
| 04/14/1998 | US5739723 Linear power amplifier using active bias for high efficiency and method thereof |
| 04/14/1998 | US5739722 Low-voltage rail-to-rail operational amplifier |
| 04/14/1998 | US5739721 High swing, low power output stage for an operational amplifier |
| 04/14/1998 | US5739720 Switched capacitor offset suppression |
| 04/14/1998 | US5739719 Bias circuit with low sensitivity to threshold variations |
| 04/14/1998 | US5739712 Power amplifying circuit having an over-current protective function |
| 04/14/1998 | US5739681 Voltage regulator with high gain cascode current mirror |
| 04/11/1998 | CA2187815A1 High frequency intensity amplifier circuitry arrangement for indoor cable television |
| 04/09/1998 | WO1998015065A1 Slotline-mounted flip chip structures |
| 04/09/1998 | WO1998015064A1 Slotline-mounted flip chip |
| 04/09/1998 | WO1998015055A1 Multiple preamplifier circuit for a television tuner |
| 04/09/1998 | WO1998015054A1 Merged transconductance amplifier |
| 04/08/1998 | EP0834986A2 Gain control circuit and method |
| 04/08/1998 | EP0834985A1 Power amplifier and chip carrier |
| 04/08/1998 | CN1178414A Circuit arrangement with operational amplifier |
| 04/08/1998 | CN1178413A 放大器系统 Amplifier System |
| 04/07/1998 | US5736906 Power supply modulator circuit for transmitter |
| 04/07/1998 | US5736902 High-gain common-emitter output stage |
| 04/07/1998 | US5736901 Radio frequency amplifier with stable operation and restrained oscillation at low frequencies |
| 04/07/1998 | US5736899 Fully differential voltage controlled operational transconductance amplifier |
| 04/07/1998 | US5736898 Process and device for linearizing the gain charactristics and phase-frequency characteristics of traveling-wave tubes and transistor amplifiers at different power levels |
| 04/07/1998 | US5736892 Differential charge pump circuit with high differential impedance and low common mode impedance |
| 04/07/1998 | US5736885 Offset adjustment for fully differential amplifiers |
| 04/07/1998 | US5736871 For a semiconductor integrated circuit |
| 04/07/1998 | US5736794 Circuit arrangement for providing signal correction including a switch-on delay time period during which a correction signal is determined for use during a following time period |
| 04/07/1998 | CA2152076C Apparatus and method for frequency compensating an operational amplifier |
| 04/07/1998 | CA2139714C Solid state tube compression circuit |
| 04/02/1998 | WO1998013936A1 Connected source of current |
| 04/02/1998 | DE19637292A1 Amplifier circuit for audio signals |
| 04/01/1998 | EP0833443A1 Switching amplifier closed loop dual comparator modulation technique |
| 04/01/1998 | EP0833442A1 High frequency noise and impedance matched integrated circuits |
| 04/01/1998 | EP0832515A1 A low-voltage rail-to-rail operational amplifier |
| 04/01/1998 | CN1177862A Base-current bias quasi-first-kind circuit |
| 03/31/1998 | US5734729 Apparatus for eliminating audio noise when power is cycled to a computer |
| 03/31/1998 | US5734300 Optical receiver preamplifier dynamic range enhancing circuit and method |
| 03/31/1998 | US5734299 Microwave VCO having reduced supply voltage |
| 03/31/1998 | US5734298 FET amplifying circuit which can improve low-consumptive current |
| 03/31/1998 | US5734297 Rail-to-rail input stages with constant gm and constant common-mode output currents |
| 03/31/1998 | US5734296 Low voltage operational amplifier input stage and method |
| 03/31/1998 | US5734294 Large swing wide band high order programmable active filters |
| 03/31/1998 | US5734170 Driver for light emitting device |
| 03/26/1998 | WO1998012801A1 Three state output method and apparatus for high speed amplifiers |
| 03/25/1998 | EP0831584A1 Amplifier system |
| 03/25/1998 | EP0830730A1 Operational amplifier |
| 03/25/1998 | EP0830729A1 Micro-power rail-to-rail amplifier |
| 03/25/1998 | EP0667994B1 Method and arrangement for controlling the operation of a high-frequency power amplifier |
| 03/25/1998 | CN1037891C Multi-channel sound freuquency power amplifying IC |
| 03/24/1998 | US5732332 Transmitter having temperature-compensated detector |