| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
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| 05/12/2005 | WO2005043748A1 Power level controlling of first amplification stage for an integrated rf power amplifier |
| 05/12/2005 | WO2005043747A2 High linearity doherty communication amplifier with bias control |
| 05/12/2005 | US20050101282 Semiconductor integrated circuit |
| 05/12/2005 | US20050101057 Power amplifier having high heat dissipation |
| 05/12/2005 | US20050099327 Delta-sigma digital-to-analog converter assembly |
| 05/12/2005 | US20050099233 Differential amplifier arrangement with current regulating circuit and method for operating a differential amplifier arrangement |
| 05/12/2005 | US20050099232 Translinear variable gain amplifier |
| 05/12/2005 | US20050099231 Class d amplifier |
| 05/12/2005 | US20050099227 High Efficiency Power Amplifier |
| 05/12/2005 | US20050099226 Switching circuits |
| 05/12/2005 | US20050099222 Electronically programmable multimode circuit |
| 05/12/2005 | US20050099212 Driver circuit with frequency-dependent signal feedback |
| 05/12/2005 | US20050099211 Voltage to current converter and method for converting |
| 05/12/2005 | US20050099169 Regulating system |
| 05/12/2005 | US20050098743 Input circuit apparatus |
| 05/12/2005 | DE112004000016T5 Logischer, rauscharmer Verstärker und Verstärkungssteuerverfahren davon Logically, low-noise amplifier and gain control method thereof |
| 05/11/2005 | EP1530289A1 Voltage to current converter and method for converting |
| 05/11/2005 | EP1530288A1 Power amplification circuit |
| 05/11/2005 | EP1530287A1 Power amplification circuit |
| 05/11/2005 | EP1530286A1 Class D amplifier |
| 05/11/2005 | EP1530197A2 Parameter control method and program therefor, and parameter setting apparatus |
| 05/11/2005 | EP1529570A2 Switched resonant power amplifier system for an ultrasonic device |
| 05/11/2005 | EP1529340A1 Amplifier |
| 05/11/2005 | CN1615588A Method and apparatus for generating a pulse width modulated signal |
| 05/11/2005 | CN1615581A An improved differential inverter |
| 05/11/2005 | CN1615579A Driving circuit |
| 05/11/2005 | CN1615488A An electronic circuit for converting a current signal to a voltage signal |
| 05/11/2005 | CN1614882A Class D amplifier |
| 05/11/2005 | CN1614881A 音频信号放大电路 Audio signal amplifier circuit |
| 05/11/2005 | CN1614880A Current balancing method for operation amplifier design |
| 05/11/2005 | CN1614879A Power amplification circuit |
| 05/11/2005 | CN1201483C Parallel high voltage metal-oxide semiconductor field effect transistor high power steady-state amplifier |
| 05/11/2005 | CN1201482C RF power amplifier having high power added efficiency |
| 05/11/2005 | CN1201481C Amplifier for mobile phone |
| 05/10/2005 | US6892058 Method and apparatus for facilitating fault tolerance in a radio frequency amplifier system |
| 05/10/2005 | US6891439 Circuit and a method for controlling the bias current in a switched capacitor circuit |
| 05/10/2005 | US6891438 Adaptive active bias compensation technique for power amplifiers |
| 05/10/2005 | US6891437 Current amplifier structure |
| 05/10/2005 | US6891436 Transconductance varying circuit of transconductor circuit, varying bandwidth filter circuit using the same and digital tuning circuit of transconductor-capacitor filter |
| 05/10/2005 | US6891435 System and method for reducing second order distortion in electronic circuits |
| 05/10/2005 | US6891434 System and method for a startup circuit for a differential CMOS amplifier |
| 05/10/2005 | US6891433 Low voltage high gain amplifier circuits |
| 05/10/2005 | US6891408 Current pulse receiving circuit |
| 05/06/2005 | WO2005041414A2 Multi-band voltage controlled oscillator |
| 05/06/2005 | WO2005041405A1 Split band amplifier |
| 05/06/2005 | WO2005041404A1 Efficient power supply for rapidily changing power requirements |
| 05/06/2005 | WO2005040043A2 Transducer preamplifier and coupling device |
| 05/06/2005 | WO2005029875A3 Digital convertible radio snr optimization |
| 05/06/2005 | WO2005011181A3 Device and method for signal processing |
| 05/06/2005 | WO2004095692A3 Linearizing apparatus and method |
| 05/06/2005 | WO2004059848A3 Modulation of a digital input signal using a digital signal modulator and signal splitting |
| 05/05/2005 | US20050095998 Tunable matching circuit |
| 05/05/2005 | US20050093724 Comparator |
| 05/05/2005 | US20050093633 Power amplifier output stage with multiple power states and improved efficiency |
| 05/05/2005 | US20050093632 Output stage for high gain and low distortion operational amplifier |
| 05/05/2005 | US20050093631 Low-distortion differential circuit |
| 05/05/2005 | US20050093630 Power level controlling of first amplification stage for an integrated rf power amplifier |
| 05/05/2005 | US20050093629 Differential amplifying circuit |
| 05/05/2005 | US20050093628 Differential amplifier circuit and multistage amplifier circuit |
| 05/05/2005 | US20050093627 Linearity enhanced power amplifier stage |
| 05/05/2005 | US20050093626 Radio frequency power amplifier module |
| 05/05/2005 | US20050093623 Input buffer amplifier with centroidal layout |
| 05/05/2005 | US20050093622 Method, circuit and power amplifier for detecting a fault, and method of protecting a circuit in a power amplifier from a fault occurrence |
| 05/05/2005 | US20050093621 Fm demodulator including a dc offset detector |
| 05/05/2005 | US20050093609 Circuit and method to compensate for RMR variations and for shunt resistance across RMR in an open loop current bias architecture |
| 05/05/2005 | US20050093596 Power supply apparatus for delay locked loop and method thereof |
| 05/05/2005 | US20050093586 Arrangement in a pulse amplifier |
| 05/05/2005 | US20050092163 Parameter control method and program therefor, and parameter setting apparatus |
| 05/04/2005 | EP1528701A2 Parameter display method and program therefor, and parameter setting apparatus |
| 05/04/2005 | EP1528678A2 Comparator |
| 05/04/2005 | EP1528670A1 Transconductance amplifier |
| 05/04/2005 | EP1528669A1 Driver Circuit |
| 05/04/2005 | EP1528668A2 Amplifier and frequency converter |
| 05/04/2005 | EP1528667A2 Variable amplifier and mobile wireless terminal using same |
| 05/04/2005 | EP1528666A1 Power amplifier circuit configuration and integrated circuit |
| 05/04/2005 | EP1527533A2 High sensitivity, high resolution detection of signals |
| 05/04/2005 | EP1476949A4 Power amplification apparatus of portable terminal |
| 05/04/2005 | EP1470636A4 N-way rf power amplifier with increased backoff power and power added efficiency |
| 05/04/2005 | EP1405400B1 Interface circuit for connecting to an output of a frequency converter |
| 05/04/2005 | EP1088389A4 Driver amplifiers with low noise standby mode characteristics |
| 05/04/2005 | CN2697947Y Multi-purpose antenna amplifier |
| 05/04/2005 | CN1613179A Compensated, digital class D amplifier |
| 05/04/2005 | CN1613178A Amplifier with bias compensation using a current mirror circuit |
| 05/04/2005 | CN1612644A Parameter control method and program therefor, and parameter setting apparatus |
| 05/04/2005 | CN1612643A Parameter display method and program therefor, and parameter setting apparatus |
| 05/04/2005 | CN1612468A 差动放大器 Differential amplifier |
| 05/04/2005 | CN1612467A 差动放大电路 A differential amplifier circuit |
| 05/04/2005 | CN1612466A 比较器 Comparators |
| 05/04/2005 | CN1612465A High-frequency power amplifier |
| 05/04/2005 | CN1612341A Driver circuit |
| 05/04/2005 | CN1612002A Output circuit, digital analog circuit and display device |
| 05/04/2005 | CN1200510C Feedback type amplifying circuit and driving circuit |
| 05/03/2005 | US6889038 Dynamic biasing of a transmitter |
| 05/03/2005 | US6889037 Reducing active mixer flicker noise |
| 05/03/2005 | US6888484 Stable high-order delta-sigma error feedback modulators, and noise transfer functions for use in such modulators |
| 05/03/2005 | US6888413 Frequency synthesizer using a VCO having a controllable operating point, and calibration and tuning thereof |
| 05/03/2005 | US6888410 Power amplifier having low gate oxide stress |
| 05/03/2005 | US6888409 High efficiency RF power amplifier |
| 05/03/2005 | US6888408 Preamplifier for two terminal electret condenser microphones |
| 05/03/2005 | US6888407 Multistage differential amplifier with CMFB circuit |