| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
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| 10/14/2004 | US20040201422 Power amplifier system |
| 10/14/2004 | US20040201421 Apparatus, methods and articles of manufacture for power amplifier control in a communication system |
| 10/14/2004 | US20040201420 Differential amplifier and comparator using the same |
| 10/14/2004 | US20040201419 Amplifying circuit |
| 10/14/2004 | US20040201418 Power supply processing for power amplifiers |
| 10/14/2004 | US20040201417 Differential amplifier, two-stage amplifier including the differential amplifier, and analog-to-digital converter including the differential amplifier |
| 10/14/2004 | US20040201416 On-chip calibrated source termination for voltage mode driver and method of calibration thereof |
| 10/14/2004 | US20040201412 Source follower, voltage follower, and semiconductor device |
| 10/14/2004 | US20040201407 Current controlled pulse width modulation circuit and class-D amplifier comprising the same |
| 10/14/2004 | US20040201056 Audio signal processing circuit and a display device incorporating the same |
| 10/13/2004 | EP1467481A1 Glitch-free controllable RF power amplifier |
| 10/13/2004 | EP1466412A1 Method and apparatus for generating a pulse width modulated signal |
| 10/13/2004 | EP1466407A2 Modulator- amplifier |
| 10/13/2004 | EP1466399A1 Isolated converter with synchronized switching leg |
| 10/13/2004 | EP1446873A4 Method and system for multiple tuner application using a low noise broadband distribution amplifier |
| 10/13/2004 | EP1273100B1 Balanced circuit arrangement |
| 10/13/2004 | EP1112617A4 Battery polarity insensitive integrated circuit amplifier |
| 10/13/2004 | EP1042865B1 Pulse referenced control method for enhanced power amplification of a pulse modulated signal |
| 10/13/2004 | EP0861520A4 Small signal linearization in power switching amplifiers |
| 10/13/2004 | CN1537343A Tuning multiplexer |
| 10/13/2004 | CN1536797A Linear power amplification device for wideband code division multiaddress system |
| 10/13/2004 | CN1536770A Direct conversion receiver with DC offset compensation function and its compensation method |
| 10/13/2004 | CN1536759A Difference amplifier and related comparator |
| 10/13/2004 | CN1536758A High-speed differential rotation single-ended converter |
| 10/13/2004 | CN1536757A Output control device of pulse width modulated inverter |
| 10/13/2004 | CN1171380C Broad-band driver circuit |
| 10/12/2004 | US6804500 High frequency circuit using high output amplifier cell block and low output amplifier cell block |
| 10/12/2004 | US6803837 Power splitter/combiner circuit, high power amplifier and balun circuit |
| 10/12/2004 | US6803825 Pseudo-differential transimpedance amplifier |
| 10/12/2004 | US6803823 Circuit, apparatus and method for an adaptive voltage swing limiter |
| 10/12/2004 | US6803822 Power amplifier having a bias current control circuit |
| 10/12/2004 | US6803821 Switchable amplifier circuit having reduced shutdown current |
| 10/12/2004 | US6803820 Apparatus and method for reducing common-mode current in differential link |
| 10/12/2004 | US6803819 Variable gain amplifier having improved gain slope characteristic and linearity |
| 10/12/2004 | US6803817 Dual band power amplifier with improved isolation |
| 10/12/2004 | US6803816 Switching power amplifier |
| 10/12/2004 | US6803809 Step-down circuit for generating a stable internal voltage |
| 10/12/2004 | US6803798 Output control apparatus of pulse width modulator |
| 10/12/2004 | US6803795 Comparator circuit |
| 10/12/2004 | CA2361298C Impedance matching low noise amplifier having a bypass switch |
| 10/07/2004 | WO2004086616A2 Clip detection in pwm amplifier |
| 10/07/2004 | WO2004086614A1 Multi-chip pwm synchronization and communication |
| 10/07/2004 | WO2004086612A1 Semiconductor circuit |
| 10/07/2004 | WO2004086611A2 Systems and methods for implementing a sample rate converter using hardware and software to maximize speed and flexibility |
| 10/07/2004 | WO2004086609A1 Systems and methods for protection of audio amplifier circuits |
| 10/07/2004 | WO2004086608A1 Neutralization of feedback capacitance in amplifiers |
| 10/07/2004 | WO2004086606A2 Amplifier circuit |
| 10/07/2004 | WO2004086602A1 Noise generator |
| 10/07/2004 | WO2004045065A3 Accurate power detection for a multi-stage amplifier |
| 10/07/2004 | WO2004042782A3 Apparatus and method for implementing a constant transconductance circuit |
| 10/07/2004 | US20040198463 Monolithic optical read-out circuit |
| 10/07/2004 | US20040198273 Apparatus for mobile communication system |
| 10/07/2004 | US20040198271 Envelope-tracking amplifier for improving gain, Method for improving efficiency thereof, and terminal device of mobile communication applied to the same |
| 10/07/2004 | US20040198268 Adaptive controller for linearization of transmitter |
| 10/07/2004 | US20040196990 Phantom powered capacitor microphone and a method of using a vacuum tube in the same |
| 10/07/2004 | US20040196121 Band switchable filter |
| 10/07/2004 | US20040196105 Signal transmission in opto-electronic devices by moving the quiescent component of a differential signal |
| 10/07/2004 | US20040196104 RF amplifier with improved impedance matching |
| 10/07/2004 | US20040196103 Switchable amplifier circuit having reduced shutdown current |
| 10/07/2004 | US20040196101 Power amplifier |
| 10/07/2004 | US20040196100 Operational amplifier with increased common mode input range |
| 10/07/2004 | US20040196099 Audio amplifier circuit |
| 10/07/2004 | US20040196098 Dual amplifier circuit and TFT display driving circuit using the same |
| 10/07/2004 | US20040196087 Variable time constant circuit and filter circuit using the same |
| 10/07/2004 | US20040196072 Circuit and method for over-current sensing and control |
| 10/07/2004 | US20040195651 Center-tap transformers in integrated circuits |
| 10/07/2004 | DE10334068A1 Amplifier arrangement, e.g. for mobile radio receiver, has changeover device for selecting one of several resistances in feedback branches and/or cross-branch |
| 10/07/2004 | DE10320705A1 Electronic fingerprint sensor has a differential amplifier with a feedback loop, with one amplifier input connected to a signal source and the other to at least a sensor element and the amplifier output |
| 10/07/2004 | DE10312435A1 Transmission and reception amplifier circuit for transceiver device incorporating at least one common amplfication stage for both amplifiers |
| 10/06/2004 | EP1465344A1 Device and method for converting an input signal |
| 10/06/2004 | EP1465335A1 Low noise light receiver |
| 10/06/2004 | EP1410495A4 System for controlling a class d amplifier |
| 10/06/2004 | EP1269624A4 System and method of producing direct audio from a power supply |
| 10/06/2004 | EP1247109B1 Electrical circuit arrangement for converting an electrical input variable into an output electrical voltage |
| 10/06/2004 | CN2646968Y Power amplifier for wireless LAN indoor covering system |
| 10/06/2004 | CN1535497A System and method of RF power amplification |
| 10/06/2004 | CN1534866A Wide-range operating differential amplifier |
| 10/06/2004 | CN1534865A Low noise light receiver |
| 10/06/2004 | CN1534667A Booster circuit |
| 10/06/2004 | CN1170362C FR communication amplifier circuit capalbe of preventing diode protection circuit from generating electromagnetic interference |
| 10/06/2004 | CN1170312C Semiconductor integrated circuit |
| 10/05/2004 | US6801098 Group delay equalizer integrated with a wideband distributed amplifier monolithic microwave integrated circuit |
| 10/05/2004 | US6801090 High performance differential amplifier |
| 10/05/2004 | US6801088 Dual gate low noise amplifier |
| 10/05/2004 | US6801085 System and method for activating gain stages in an amplification module |
| 10/05/2004 | US6801084 Transimpedance amplifier and circuit including the same |
| 10/05/2004 | US6801082 Power amplifier circuit and method using bandlimited signal component estimates |
| 10/05/2004 | US6801058 Circuit and method for over-current sensing and control |
| 10/05/2004 | US6800929 Semiconductor device |
| 10/05/2004 | US6800920 RF passive circuit and RF amplifier with via-holes |
| 09/30/2004 | WO2004056061A3 Adaptive controller for linearization of transmitter |
| 09/30/2004 | WO2003010882A3 Electronic circuit comprising an amplifier for amplifying a binary signal |
| 09/30/2004 | US20040192408 Battery life extending technique for mobile wireless applications using bias level control |
| 09/30/2004 | US20040192237 Feedforward amplifier and radio communication apparatus with the amplifier |
| 09/30/2004 | US20040192212 Method and apparatus for facilitating fault tolerance in a radio frequency amplifier system |
| 09/30/2004 | US20040192194 Dual band bidirectional amplifier for wireless communication |
| 09/30/2004 | US20040189497 I/V converter circuit and D/A converter |
| 09/30/2004 | US20040189401 Output circuit |
| 09/30/2004 | US20040189400 Radio frequency power amplifier module |
| 09/30/2004 | US20040189399 Bias circuit for a radio frequency power amplifier |