H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements

Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008)
11/2011
11/01/2011	US8049563 Distributed circular geometry power amplifier architecture
11/01/2011	US8049562 Amplifier with improved input resistance and controlled common mode
11/01/2011	US8049561 Class D amplifier
11/01/2011	US8049559 Semiconductor device, radio frequency circuit, and radio frequency power amplifier
11/01/2011	US8049558 Switchable balanced amplifier
11/01/2011	US8049557 Self oscillating class D amplification device
11/01/2011	US8049534 Low-power high-speed differential driver with precision current steering
11/01/2011	US8049157 Semiconductor device
11/01/2011	CA2438333C Direct conversion receiver architecture
10/2011
10/27/2011	WO2011133542A1 Pseudo-envelope following power management system
10/27/2011	WO2011131625A1 Power amplifier with low noise figure and voltage variable gain
10/27/2011	US20110260901 Variable Gain Amplifier
10/27/2011	US20110260798 Semiconductor integrated circuit device
10/27/2011	US20110260797 Systems and methods for a discrete resizing of power devices with concurrent power combining structure for radio frequency power amplifier
10/27/2011	US20110260796 Bias circuit, power amplifier, and current mirror circuit
10/27/2011	US20110260795 Method for reducing offset voltage of operational amplifier and the circuit using the same
10/27/2011	US20110260794 High frequency power amplifier
10/27/2011	US20110260793 Ground-referenced common-mode amplifier circuit and related method
10/27/2011	US20110260788 Amplifier device and sensor module
10/26/2011	EP2380278A1 Ultra low noise high linearity lna for multi-mode transceiver
10/26/2011	EP2380277A1 Class ab amplifier with resistive level-shifting circuitry
10/26/2011	EP2380276A1 A multi stage amplifier
10/26/2011	EP2096754B1 Optical receiver
10/26/2011	CN202019342U Heart sound amplifying circuit based on MAX4465 and LM386
10/26/2011	CN202019341U Digital power amplifying circuit structure
10/26/2011	CN1682444B Integrated circuit with automatic polarity detection and configuration
10/26/2011	CN101667046B Low-voltage difference voltage adjuster
10/26/2011	CN101609345B Linear voltage regulator
10/26/2011	CN101164227B A power supply system.
10/25/2011	US8045807 Pattern edge detecting method and pattern evaluating method
10/25/2011	US8044906 Semiconductor device, and display device and electronic device utilizing the same
10/25/2011	US8044743 Method and apparatus for pulse position modulation
10/25/2011	US8044721 Low noise amplifier
10/25/2011	US8044720 Amplification circuit
10/25/2011	US8044719 Class D amplifier circuit
10/25/2011	US8044715 Method and system for increasing sampling frequency for switching amplifiers
10/25/2011	US8044714 Device and method for amplifying pulsed RF signals
10/20/2011	WO2011130021A1 Methods for determining optimum power supply voltages for radio-frequency power amplifier circuitry
10/20/2011	WO2011129727A1 Power-amplifier arrangement
10/20/2011	WO2011129553A2 Public address amplifier which is lightweight due to the supply of class-d sampling frequency to opt
10/20/2011	WO2011127815A1 Amplifying unit, power amplifier and transmitter
10/20/2011	WO2011127777A1 Radio frequency power amplifier module and mobile communication terminal
10/20/2011	US20110255359 Sense-Amplification With Offset Cancellation For Static Random Access Memories
10/20/2011	US20110255228 Balance signal output type sensor
10/20/2011	US20110254630 Power amplifier protection
10/20/2011	US20110254629 Multi stage amplifier
10/20/2011	US20110254628 Multi-Stage Amplifier
10/20/2011	US20110254627 Signaling systems, preamplifiers, memory devices and methods
10/20/2011	US20110254626 Amplification circuit
10/20/2011	US20110254625 Circuit and method for reducing noise in class d amplifiers
10/20/2011	US20110254592 Sampling circuit and image signal amplifying circuit each including feedback clamp block and image sensor including the image signal amplifying circuit
10/19/2011	EP2378681A1 Light receiving circuit and electronic device including light receiving circuit
10/19/2011	EP2378661A2 Dual mode power amplifier
10/19/2011	EP2378660A2 A Signal Processing Circuit
10/19/2011	EP2378659A1 Distortion compensation circuit
10/19/2011	EP2378658A1 Switched mode power amplification
10/19/2011	EP2378657A1 Power amplification device
10/19/2011	EP2377241A1 Techniques for improving amplifier linearity
10/19/2011	EP2377240A2 Method and apparatus for enhancing performance of doherty power amplifier
10/19/2011	EP2033306B1 Switched mode power amplification
10/19/2011	CN202014228U Automobile digital power amplifier
10/19/2011	CN1972530B Electrostatic transducer, ultrasonic speaker, driving circuit of capacitive load
10/19/2011	CN102224676A Low voltage differential signaling driver with programmable on-chip resistor termination
10/19/2011	CN101656515B High and low power combination circuit of radio frequency power amplifier
10/19/2011	CN101567667B Enhancement type analog predistortion linear power amplifier
10/19/2011	CN101507111B Multi-function passive frequency mixer
10/19/2011	CN101499779B Piezoelectric minimized wide-band power amplifier
10/19/2011	CN101257284B Semiconductor device
10/18/2011	USRE42846 Close-loop class-D audio amplifier and control method thereof
10/18/2011	US8041315 Method and a device for adjusting power amplifier properties
10/18/2011	US8040187 Semiconductor integrated circuit device
10/18/2011	US8040185 Amplifying device
10/18/2011	US8040184 Class-D amplifier
10/18/2011	US8040183 Turn-on/turn-off snubber for a metallic-oxide-semiconductor field-effect transistor (MOSFET) class-D power amplifier
10/18/2011	US8040181 Time delay compensation and pulse width correction
10/18/2011	US8040180 Operational amplifier capable of compensating offset voltage
10/18/2011	CA2504979C Improved rf transistor amplifier linearity using suppressed third order transconductance
10/13/2011	WO2011126527A1 Single supply class-d amplifier
10/13/2011	WO2011125261A1 Amplifier circuit and wireless communication device
10/13/2011	WO2011124480A1 Differential amplifier having a rail-to-rail input voltage range
10/13/2011	WO2011071573A3 Amplifiers with depletion and enhancement mode thin film transistors and related methods
10/13/2011	US20110248784 Multi-chip doherty amplifier with integrated power detection
10/13/2011	US20110248783 Circuit for amplifying a signal representing a variation in resistance of a variable resistance and corresponding sensor
10/13/2011	US20110248782 Rf power amplifier
10/13/2011	US20110248781 Duplicate feedback network in class D amplifiers
10/13/2011	US20110248780 Cascode amplifier with increased linearity
10/13/2011	US20110248779 Amplifier circuitry, integrated circuit and communication unit
10/12/2011	EP2375566A1 Duplicate feedback network in class D amplifiers
10/12/2011	EP2374210A1 Multi-stage amplifier
10/12/2011	EP1547240B1 Dual mode power amplifier having a common controller
10/12/2011	CN202009365U Multi-path solid microwave power amplifier
10/12/2011	CN202009364U Circuit for lessening effects of electromagnetic radiation of amplifier
10/12/2011	CN1976218B Low voltage low power class A/B output stage
10/12/2011	CN102215029A D-class audio power amplifier and audio signal processing method thereof
10/12/2011	CN101494443B DC offset correction circuit and method
10/12/2011	CN101443996B Circuit and method for driving bulk capacitance of amplifier input transistors
10/12/2011	CN101320981B Signal detection circuit with surge noise removing function and method thereof
10/11/2011	US8036628 Wireless communication system
10/11/2011	US8036539 Gigabit ethernet longwave optical transceiver module having amplified bias current
10/11/2011	US8035459 Wideband divider

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