| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
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| 06/03/2004 | US20040106385 Dynamic bias for RF power amplifiers |
| 06/03/2004 | US20040105511 Low power CDMA receiver |
| 06/03/2004 | US20040105509 Digitally convertible radio |
| 06/03/2004 | US20040105033 Amplifier assembly including variable gain amplifier, parallel programmable amplifiers, and AGC |
| 06/03/2004 | US20040104903 Display device |
| 06/03/2004 | US20040104776 Voltage amplification circuit |
| 06/03/2004 | US20040104775 High linearity digital variable gain amplifier |
| 06/03/2004 | US20040104774 Operational amplifier having large output current with low supply voltage |
| 06/03/2004 | US20040104772 Transconductance amplifier for inductive loads and method for driving inductive loads |
| 06/03/2004 | US20040104771 Gain control methods and systems in an amplifier assembly |
| 06/03/2004 | US20040104770 Method and apparatus for increasing the efficiency of a transmitter |
| 06/03/2004 | US20040104769 Amplifier |
| 06/03/2004 | US20040104767 Voltage follower circuit |
| 06/03/2004 | US20040104748 Input circuit, display device and information display apparatus |
| 06/03/2004 | US20040104746 Transconductance varying circuit of transconductor circuit, varying bandwidth filter circuit using the same and digital tuning circuit of transconductor-capacitor filter |
| 06/03/2004 | US20040104740 Process monitor for monitoring an integrated circuit chip |
| 06/03/2004 | US20040104712 Constant voltage power supply |
| 06/02/2004 | EP1424772A2 High linearity variable gain amplifier |
| 06/02/2004 | EP1423928A1 Photoreceiver assembly for high-powered lasers |
| 06/02/2004 | EP1423913A1 Device for amplifying a high frequency signal |
| 06/02/2004 | EP1423912A1 Circuitry for creating a spectral null in a differential output switching amplifier and method therefor |
| 06/02/2004 | EP1423911A1 Power amplifier having a cascode current-mirror self-bias boosting circuit |
| 06/02/2004 | CN1502164A Variable gain low-noise amplifier for a wireless terminal |
| 06/02/2004 | CN1501578A Signal amplifier employing DOHERTY amplifier |
| 06/01/2004 | US6744327 Tunable voltage controlled oscillator |
| 06/01/2004 | US6744324 Frequency synthesizer using a VCO having a controllable operating point, and calibration and tuning thereof |
| 06/01/2004 | US6744322 High performance BiFET low noise amplifier |
| 06/01/2004 | US6744321 Bias control circuit for power amplifier |
| 06/01/2004 | US6744320 Variable transconductane variable gain amplifier utilizing a degenerated differential pair |
| 06/01/2004 | US6744319 Exponential function generator embodied by using a CMOS process and variable gain amplifier employing the same |
| 06/01/2004 | US6744318 Digital power amplifier |
| 06/01/2004 | US6744315 Transmission amplifier |
| 06/01/2004 | US6744312 Adaptive power amplifier system |
| 06/01/2004 | US6744311 Switching amplifier with voltage-multiplying output stage |
| 06/01/2004 | US6744310 Power amplifying device |
| 06/01/2004 | US6744308 System and method for establishing the input impedance of an amplifier in a stacked configuration |
| 06/01/2004 | US6744284 Receiver circuit of semiconductor integrated circuit |
| 06/01/2004 | CA2321511C Current source circuit |
| 05/27/2004 | WO2004045180A1 Apparatus, methods and articles of manufacture for pre-emphasis filtering of a modulated signal |
| 05/27/2004 | WO2004045091A2 Rf circuit with frequency agile sequential amplifiers |
| 05/27/2004 | WO2004045070A1 Improved rf transistor amplifier linearity using suppressed third order transconductance |
| 05/27/2004 | WO2004045069A1 Failsafe differential amplifier circuit |
| 05/27/2004 | WO2004045068A1 Method for the generation of a high-frequency ac voltage and corresponding high-frequency power amplifier |
| 05/27/2004 | WO2004045065A2 Accurate power detection for a multi-stage amplifier |
| 05/27/2004 | WO2004034603A3 Transmitter and methods of transmission using separate phase and amplitude modulators |
| 05/27/2004 | WO2004030223A3 Full bridge integral noise shaping for quantization of pulse width modulation signals |
| 05/27/2004 | WO2003103133A3 High frequency amplifier in an integrated circuit |
| 05/27/2004 | WO2003094344B1 Improved variable gain amplifier |
| 05/27/2004 | WO2003079547A3 Reconfigurable distributed active transformers |
| 05/27/2004 | WO2003038993A3 Method and apparatus for automated current balance adjustment for parallel combined amplification elements |
| 05/27/2004 | WO2002084684A3 Tunable planar capacitor |
| 05/27/2004 | US20040100341 Mems-tuned high power, high efficiency, wide bandwidth power amplifier |
| 05/27/2004 | US20040100329 Single-ended differential circuit using complementary devices |
| 05/27/2004 | US20040100328 Circuits and methods for reducing interference from switched mode circuits |
| 05/27/2004 | US20040100326 Method and apparatus for controlling an amplifier |
| 05/27/2004 | US20040100317 Optical signal receiving circuit and optical signal receiving semiconductor device |
| 05/27/2004 | DE10252146A1 Method for generating high-frequency AC voltage, involves damping unwanted parasitic oscillation circuits with low-frequency resonance frequencies |
| 05/27/2004 | DE10251702A1 Difference amplifier e.g. for signal processing, has emitters of amplifier transistors connected together via NTC compensation resistance |
| 05/26/2004 | EP1422653A2 Electro-optical sensor |
| 05/26/2004 | EP1422588A1 Constant voltage power supply |
| 05/26/2004 | EP1421694A2 Differential charge pump |
| 05/26/2004 | EP1421693A2 Charge pump |
| 05/26/2004 | EP1421686A1 Integrated rc filter |
| 05/26/2004 | EP1421681A1 Thermally distributed darlington amplifier |
| 05/26/2004 | EP1421679A2 High frequency power amplifier circuit |
| 05/26/2004 | EP1421678A2 Switching power supply for rf power amplifiers |
| 05/26/2004 | CN1500307A Current mirror compensation system for power amplifiers |
| 05/26/2004 | CN1499894A Redundancy system of multi-source acoustic equipment |
| 05/26/2004 | CN1499732A Digital radio frequency emitter and method |
| 05/26/2004 | CN1499721A Circuit capable of generating control signal in linear current and method thereof |
| 05/26/2004 | CN1499711A 电压放大电路 Voltage amplifier circuit |
| 05/26/2004 | CN1499328A Current leakage compensator and its compensating method |
| 05/25/2004 | US6741814 Balun for coaxial cable transmission |
| 05/25/2004 | US6741700 Low insertion loss current sense circuit |
| 05/25/2004 | US6741413 Common mode transient reduction circuit for improving transient response of an operational transconductance amplifier |
| 05/25/2004 | US6741217 Tunable waveguide antenna |
| 05/25/2004 | US6741211 Tunable dipole antenna |
| 05/25/2004 | US6741196 Method and apparatus for a high-drive current digital-to-analog converter |
| 05/25/2004 | US6741144 High-frequency semiconductor device |
| 05/25/2004 | US6741135 Radio frequency power amplifier module |
| 05/25/2004 | US6741134 DC feedback control circuit |
| 05/25/2004 | US6741133 High output amplifier for stable operation |
| 05/25/2004 | US6741131 DC-compensation loop for variable gain amplifier |
| 05/25/2004 | US6741130 High-speed output transconductance amplifier capable of operating at different voltage levels |
| 05/25/2004 | US6741129 Differential amplifier slew rate boosting scheme |
| 05/25/2004 | US6741127 High-frequency amplifier circuit and radio communication apparatus using same |
| 05/25/2004 | US6741126 Low noise amplifier arrangement |
| 05/25/2004 | US6741125 High frequency power amplifier and wireless communication module |
| 05/25/2004 | US6741123 Delta-sigma amplifiers with output stage supply voltage variation compensation and methods and digital amplifier systems using the same |
| 05/25/2004 | US6741121 Differential amplifier common mode noise compensation |
| 05/25/2004 | US6741105 Differential circuit and peak hold circuit including differential circuit |
| 05/21/2004 | WO2004043062A1 Read-out circuit for infrared detectors. |
| 05/21/2004 | WO2004042916A1 Simple self-biased cascode amplifier circuit |
| 05/21/2004 | WO2004042782A2 Apparatus and method for implementing a constant transconductance circuit |
| 05/21/2004 | WO2003103109A3 Power amplifiers |
| 05/20/2004 | US20040098232 Method and apparatus for operating a transmission amplifier |
| 05/20/2004 | US20040095306 Driving circuit for driving capacitive element with reduced power loss in output stage |
| 05/20/2004 | US20040095211 Tunable ferro-electric filter |
| 05/20/2004 | US20040095190 Balanced power amplifier with a bypass structure |
| 05/20/2004 | US20040095163 Single-ended differential circuit using complementary devices |