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8416024 Impedance matching arrangement for amplifier having split shunt capacitor and amplifier including the same  
An amplifier having an operating frequency includes: an input port and an output port; three gain elements, each having an input terminal and an output terminal; an input matching network; and an...
8416022 Power amplifier device  
A power amplifier device that satisfies both delivering a high output and reducing the chip area occupied by the power amplifier device. Over a substrate, are primary inductors arranged in a...
8416018 Variable frequency amplifier  
A variable frequency amplifier includes a main amplifier system 4 for amplifying one of signals into which an input signal is split by a directional coupler 3 to output the amplified signal, and...
8416017 Circuit and method for reducing noise in class D amplifiers  
A circuit for reducing noise in Class D amplifiers has a power stage voltage control means (17, 21, 22) responsive to defined signal conditions of the audio signal input (1). The power stage...
8410848 Enhanced doherty amplifier with asymmetrical semiconductors  
The present disclosures an amplification unit which comprises a first amplifier and a second amplifier connected in parallel, the first amplifier and the second amplifier comprising semiconductor...
8410853 Inductive circuit arrangement  
A bond wire circuit includes at least three bond wires arranged to split an input signal into two output signals. In connection with various example embodiments, bond wires are arranged in a...
8400215 Power amplification device for satellite communication device  
A power amplification device for a satellite communication device with a redundant configuration, in which a plurality of power amplifiers including a standby power amplifier are connected in a...
8400216 3-way Doherty power amplifier using driving amplifier  
Disclosed is a 3-way Doherty power amplifier using a driving amplifier in which driving amplifiers are connected to the front stages of a carrier amplifier and a peaking amplifier, respectively,...
8400223 Amplifier arrangement  
An amplifier arrangement with an amplifier arrangement input and an amplifier arrangement output is disclosed. The amplifier arrangement comprises a first transistor and a first ballast...
8395443 Doherty amplifier  
A Doherty amplifier includes a first amplifier, a second amplifier, a transmission line, a synthesizer, and an output load. The first amplifier amplifies an RF input signal according to a voltage...
8395450 Doherty amplifier and semiconductor device  
A Doherty amplifier includes a carrier amplifier including a first FET, the first FET having a plurality of gate electrodes, and a peaking amplifier including a second FET, the second FET having a...
8395449 Network for controlling the power supply to a system of active elements  
The present invention relates to a power supply control network of an amplifying active elements system enabling at least one control signal to be transmitted to N different control systems of the...
8390381 Two stage Doherty amplifier  
The invention refers to a Doherty power amplifier comprising a first power amplifier (Main PA) adapted to receive an input signal and adapted to provide a first output signal which is phase...
8384482 Wideband Doherty amplifier circuit with impedance combiner  
An amplifier circuit includes a first amplifier operable to turn on at a first power level, a second amplifier operable to turn on at a second power level below the first power level and a third...
8384481 Signal amplification device and signal amplification method  
A signal amplification device includes: a signal generator which divides an input signal so as to generate a plurality of division signals having a specified amplitude and different phases; a...
8384475 Composite amplifier, a radio terminal and a method for improving the efficiency of the composite amplifier  
The present invention relates to a composite amplifier (3, 4, 120), a radio terminal (100) including such composite amplifier and to a method for improving the efficiency of such composite...
8369453 Adaptive offset adjustment algorithm  
An apparatus and method is disclosed to compensate for one or more offsets in a communications signal. A communications receiver may carry out an offset adjustment algorithm to compensate for the...
8368465 Power amplification apparatus  
A power amplification apparatus includes a first amplifier turned on at a preset low input power; and a second amplifier connected in parallel with the first amplifier and turned off at a low...
8368470 RF power amplifiers with linearization  
Designs and techniques associated with power amplifiers for amplifying RF signals to provide variable power amplification and improved linearity in various RF amplification circuits, including...
8362837 System and a method for amplifying a signal by multiple non-linear power amplifiers  
A system and a method are provided. The system may include (A) a measurement circuit arranged to measure at least a current power level of the input signal; (B) multiple non-linear power...
8358174 Doherty amplifier  
The embodiment relates to a Doherty amplifier, wherein in order to perform impedance matching. The embodiment comprises an impedance converter and a connector. The impedance converter includes a...
8354882 Doherty amplifier with input network optimized for MMIC  
In a Doherty amplifier (100), the amplifier's input is connected to a main device (102) via a first branch and to a peak device via a second branch. The first branch has a first...
8350626 Amplifier circuit  
An amplifier circuit can include a first supply terminal to receive a first reference voltage; a second supply terminal to receive a second reference voltage; a first pair of circuit paths...
8344807 Distributed low noise amplifier  
A distributed low noise amplifier (DLNA) comprises at least a first amplifier part 30.1 providing a first path 36.1 form an input of the amplifier to an output of the amplifier and a second...
8344799 Power amplifier and amplification method thereof  
A power amplifier according to the present invention includes: a carrier amplifier (2) that amplifies a carrier of a high-frequency input signal; a peak amplifier (3) that amplifies a peak...
8339204 Semiconductor device  
Power amplifier circuits which constitute an RF power module used for a digital device capable of handling high frequency signals in two frequency bands are disposed over the same IC chip. The...
8339201 Wideband doherty amplifier circuit having a constant impedance combiner  
A three way wideband Doherty amplifier circuit includes a first peaking amplifier operable to turn on at a first power level, a second peaking amplifier operable to turn on at a second power level...
8339196 Combined cell doherty power amplification apparatus and method  
A Doherty power amplification apparatus and method using a combined cell are provided. The Doherty power amplification apparatus includes, a power splitter for splitting an input power, and...
8331875 Amplifier and communication apparatus  
An amplifier includes first and second amplifier circuits. The first amplifier circuit amplifies positive-phase input signal to obtain a first positive-phase signal and amplifies negative-phase...
8330547 Gain control linearity in an RF driver amplifier transmitter  
An exemplary apparatus is disclosed that comprises a plurality of voltage to current transducers to convert an input signal voltage into a plurality of input signal currents and a cascode stage....
8324966 Apparatus and methods for electronic amplification  
Apparatus and methods for electronic amplification are provided. In one embodiment, a method includes providing a first differential amplification block, providing a second differential...
8324965 Final stage three-way power combining amplifying circuit applied to power amplifier of mobile communications base station system  
The invention relates to a final stage three-way power combining amplifying circuit applied to power amplifier of a mobile communications base station system. The circuit includes at least a first...
8320864 Method and system for multiple tuner application using a low noise broadband distribution amplifier  
An active splitter circuit arrangement includes a first amplification module having a number of first input ports and first output ports. The first amplification module is configured to provide...
8319557 Integrated linear power detection in an RF power amplifier  
A radio frequency (RF) power amplifier system having a power detection feature includes a balanced power amplifier, an in-phase branch current detector, an out-of-phase branch current detector,...
8320846 Amplifier  
An amplifier includes a separating unit, a generator, first to fourth switching amplifiers, and an outputting unit. The separating unit separates a pulse signal into a first separated pulse signal...
8314658 Power amplifier  
A power amplifier comprises a plurality of primary inductors provided on a substrate in a circular geometry as a whole; a plurality of amplifier pairs; a secondary inductor; and a connection...
8314654 Multi-band high-efficiency Doherty amplifier  
The present invention relates to a Multi-Band Doherty amplifier. Embodiments of the present invention provide an amplifying structure including a main amplifier configured to amplify a first...
8314655 RF power amplifier and RF power module using the same  
The RF power amplifier circuit including multiple amplification stages has a previous-stage amplifier, a next-stage amplifier and a controller. The previous-stage amplifier responds to an RF...
8310312 Amplifiers with improved linearity and noise performance  
Amplifiers with improved linearity and noise performance are described. In an exemplary design, an apparatus includes first through sixth transistors. The first transistor receives an input signal...
8310314 Signal amplification circuits for receiving/transmitting signals according to input signal  
One exemplary signal amplification circuit used for processing an input signal includes an input stage, a plurality of output stages, and a selecting stage. The input stage has an input node for...
8305146 Multi stage amplifier  
A multi-stage amplifier includes a first, a second, and a third sub-amplifier, each with respective input and output ports. The multi-stage amplifier also includes a common output port. The output...
8305141 Distributed Doherty power amplifier  
Provided is a distributed Doherty power amplifier exhibiting high efficiency and linearity at a wide range of bandwidths, the distributed Doherty power amplifier including a first amplifier; a...
8289083 Active power splitter  
A circuit topology in accordance with a system, method and device for an active power splitter with an input and at least two outputs which allows the use of negative feedback and thus improving...
8279009 Distributed doherty amplifiers  
Doherty and distributed amplifier (DA) designs are combined to achieve, wideband amplifiers with high efficiency dynamic range. A modified Doherty amplifier includes a wideband phase shifter...
8279010 Radio frequency power amplifier  
The radio frequency power amplifier is connected between an other end of the first switching element and an other end of the second switching element, supplies power to a second amplifier via the...
8274332 N-way Doherty distributed power amplifier with power tracking  
A power amplifier using N-way Doherty structure with adaptive bias supply power tracking for extending the efficiency region over the high peak-to-average power ratio of the multiplexing modulated...
8269555 Efficient linear LINC power amplifier  
Method for setup of parameter values in a RF power amplifier circuit arrangement (200), wherein the amplifier circuit arrangement (200) comprises a first (210) and a second (220) amplification...
8269556 Method and amplifier for cancelling magnetic coupling  
A method for cancelling magnetic coupling in an amplifier is disclosed. The amplifier includes a first path and a second path for outputting a first signal and a second signal, respectively, and...
8264278 Amplifier  
An amplifier is realized by a distributed-constant-type amplifier including an input-side transmission line and an output-side transmission line, and a plurality of unit circuits coupled between...
8258866 Power amplifiers  
Various aspects of the disclosure provide high power and high efficiency power amplifier systems that can be integrated on a chip using integrated circuit processes such as a standard CMOS and...