Patents
Patents for H03F 1 - Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements (30,272)
08/2007
08/08/2007CN101015119A System and method for current-mode amplitude modulation
08/08/2007CN101013911A Control circuit of radio-frequency variable gain amplifier and gain control method
08/08/2007CN101013795A Analog external cavity laser
08/07/2007US7254828 Multiple input data receiver for cable television systems
08/07/2007US7254377 Parallel operation system of transmission amplifier
08/07/2007US7254244 Pop and click reduction using DAC power up and power down processing
08/07/2007US7254169 Method and apparatus for determining a loss of signal condition
08/07/2007US7254164 Method for transconductance linearization for DC-coupled applications
08/07/2007US7253689 Low distortion amplifier
08/07/2007US7253688 Input matching circuit for multiband low noise amplifier
08/07/2007US7253687 Clamping circuit for operational amplifiers
08/07/2007US7253682 Antenna amplifier
08/07/2007US7253679 Operational amplifier and method for canceling offset voltage of operational amplifier
08/07/2007CA2576778A1 Self-calibrating multi-port circuit and method
08/07/2007CA2302256C Predistortion linearizer circuit
08/02/2007WO2007087630A2 Notch filter for ripple reduction in chopper stabilized amplifiers
08/02/2007WO2007087586A2 Systems and methods for over-current protection
08/02/2007WO2007086570A1 Distortion compensation circuit
08/02/2007WO2007085788A1 Amplifier control
08/02/2007WO2007085383A1 Signal conditioning circuit
08/02/2007US20070179755 Methods and systems for derivation of missing data objects from test data
08/02/2007US20070179754 Wireless meter for real time measurements and method therefor
08/02/2007US20070179753 Curve fitting for signal estimation, prediction, and parametrization
08/02/2007US20070176686 Ultra broad-band low noise amplifier utilizing dual feedback technique
08/02/2007US20070176678 Method And Apparatus For Controlling Adaptive Circuits
08/02/2007US20070176677 Switched distributed power amplifier
08/02/2007US20070176675 Differential amplifier and digital-to-analog converter
08/02/2007US20070176634 Transistor arrangement, integrated circuit and method for operating field effect transistors
08/01/2007EP1814221A2 A variable power adaptice transmitter
08/01/2007EP1814220A1 A variable power adaptive transmitter
08/01/2007EP1813069A2 Systems and methods for vector power amplification
08/01/2007EP1756941A4 Multi-band low noise amplifier system
08/01/2007EP1658673A4 Low noise, electric field sensor
08/01/2007EP1444775B1 Method and apparatus to manage address translation for secure connections
08/01/2007CN1330088C An adaptive linearization technique for communication building block
08/01/2007CN101010873A Audio signal amplifying circuit and electronic device using the same
07/2007
07/31/2007US7251464 Method and apparatus for predistortion training in an amplifier utilizing predistortion
07/31/2007US7251462 Modulation circuit device, modulation method and radio communication device
07/31/2007US7251293 Digital pre-distortion for the linearization of power amplifiers with asymmetrical characteristics
07/31/2007US7251290 Adaptive controller for linearization of transmitter
07/31/2007US7250820 Power distribution and biasing in RF switch-mode power amplifiers
07/31/2007US7250816 Method and apparatus for combining multiple signals for high efficiency applications
07/31/2007US7250815 Amplifier distortion management apparatus, systems, and methods
07/31/2007US7250814 Variable gain amplifier
07/31/2007US7250813 Split amplifier architecture for cross talk cancellation
07/26/2007WO2007084033A1 Linc out-phasing amplifier system
07/26/2007WO2007083281A1 Cartesian modulation system via multi-level pulse width modulation
07/26/2007WO2007082388A1 Power supply for limited power sources and audio amplifier using power supply
07/26/2007US20070173213 Cartesian loop transmitter and method of adjusting an output level of such transmitter
07/26/2007US20070170993 Differential amplifier having an improved slew rate
07/26/2007US20070170991 Variable gain circuit
07/26/2007US20070170982 Circuit utilizing op-sharing technique and related method thereof
07/26/2007US20070170981 Notch filter for ripple reduction in chopper stabilized amplifiers
07/26/2007CA2635629A1 Power supply for limited power sources and audio amplifier using power supply
07/25/2007EP1811675A1 Adapter device, mainly for a power amplifier
07/25/2007EP1811658A1 Power amplifier bias protection for depletion mode transistor
07/25/2007EP1811657A2 Nested transimpedance amplifier
07/25/2007EP1811656A2 Nested transimpedance amplifier
07/25/2007EP1811655A1 A power amplifier distortion compensation apparatus and method thereof
07/25/2007EP1811654A1 Amplifier feedback switch configuration with improved PSRR
07/25/2007EP1811653A1 Amplifier input switch configuration with improved PSRR
07/25/2007EP1811652A2 Nested transimpedance amplifier
07/25/2007EP1811651A1 Device and method for controlling a voltage control signal
07/25/2007EP1810433A2 System and method for forward path gain control in a digital predistortion linearized transmitter
07/25/2007EP1810398A1 Method and apparatus for maintaining constant linearity for a power amplifier over varying load conditions
07/25/2007EP1755215A9 Amplifier circuit improved in linearity and frequency band
07/25/2007EP1440230B1 Device for protecting an electronic circuit
07/25/2007CN1328849C Infrared radiation receiving circuit, electronic device, and infrared radiation receiving method
07/25/2007CN101005268A Class D amplifier with start-up click noise elemination
07/25/2007CN101005237A Current sense amplifier for voltage converter
07/24/2007US7248973 Metrics for characterizing chemical arrays based on analysis of variance (ANOVA) factors
07/24/2007US7248846 Feedforward amplifier and radio communication apparatus with the amplifier
07/24/2007US7248656 Digital convertible radio SNR optimization
07/24/2007US7248653 Low power and high linearity receivers with reactively biased front ends
07/24/2007US7248644 Circuit and method for compensating for nonliner distortion of power amplifier
07/24/2007US7248643 Distortion compensator
07/24/2007US7248636 Systems and methods for adjusting an output driver
07/24/2007US7248120 Stacked transistor method and apparatus
07/24/2007US7248119 Broadband amplifier with improved noise figure and distortion characteristics
07/24/2007US7248118 Radio frequency power amplifier module
07/24/2007US7248113 Methods and systems for stabilizing an amplifier
07/24/2007US7248112 Hybrid distortion compensation method and hybrid distortion compensation device
07/24/2007US7248106 Sampling signal amplifier
07/24/2007US7248105 Method and circuit for input offset correction in an amplifier circuit
07/24/2007US7248104 Operational amplifier
07/24/2007CA2233692C Linearized digital automatic gain control
07/19/2007WO2007080741A1 Amplifying device
07/19/2007WO2007080528A1 Single-ended amplifier
07/19/2007US20070165745 Adaptation of iq-error compensation
07/19/2007US20070164826 Gain controllable low noise amplifier and wireless communication receiver having the same
07/19/2007US20070164824 Amplifier
07/19/2007US20070164821 Load-invariant amplifier
07/19/2007US20070164819 Amplifier
07/19/2007US20070164818 High efficiency amplifier
07/19/2007US20070164817 Ultrasound imaging or other use variable input impedance preamplifier
07/19/2007US20070164816 Balanced amplifier
07/19/2007US20070164814 Digital amplifier
07/19/2007DE112005002091T5 Verstärkerschaltung und Verfahren zum Reduzieren des Spannungs- und Stromrauschens Amplifier circuit and method for reducing the voltage and current noise
07/18/2007EP1808960A2 Reduced-size sensor circuit
07/18/2007EP1807929A1 Fet amplifier with adjustable degeneration resistance