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8183929 |
Multi-chip doherty amplifier with integrated power detection
In accordance with an exemplary embodiment of the present invention, a Doherty amplifier is provided for applications in radio frequency, microwave, and other electronic systems. An exemplary...
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8183930 |
Power amplifier device
This invention provides a power amplifier device that satisfies both of delivering a high output and reducing the chip area occupied by the power amplifier device. The power amplifier device formed...
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8179195 |
Current-feedback instrumentation amplifiers
Current-feedback instrumentation amplifiers that include dynamic element matching for the input transconductance amplifiers by periodically swapping the transconductance amplifiers between the...
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8174322 |
Power control of reconfigurable outphasing chireix amplifiers and methods
Various embodiments relate to a reconfigurable integrated digital Chireix out-phasing power amplifier for use in high power base stations is described and a related method of said design. The power...
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8175566 |
Multiple multi-mode low-noise amplifier receiver with shared degenerative inductors
A device with multiple multi-mode low-noise amplifiers (LNAs), each with common operating modes and separate operating frequency bands, are coupled to shared degenerative inductors for common...
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8164384 |
Asymmetric multilevel outphasing architecture for RF amplifiers
A radio frequency (RF) circuit includes a power supply configured to generate a plurality of voltages, a plurality of power amplifiers, each having an RF output port and a power supply input port,...
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8164383 |
Circuits and methods for amplifying signals
In one embodiment, the present disclosure includes an amplifier comprising first and second output stages. The first output stage receives first power supply voltages and the second output stage...
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8155606 |
RF power amplifier device and wireless communication terminal device
A RF power amplifying device is constituted by a system of a balanced amplifier including first phase shifters, a first RF power amplifier, a second RF power amplifier, second phase shifters, and a...
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8154339 |
V-band high-power transmitter with integrated power combiner
A wireless communications system includes a first multiplexer distribution network fed by a radio frequency input; a plurality of multi-stage power amplifiers fed by the first multiplexer...
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8145160 |
Tx module for wireless communication
A Tx module includes a plurality of power amplification units, a plurality of matching circuit units configured as transformers having input ports connected to output ports of the plurality of...
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8138829 |
Segmented power amplifier with varying segment activation
Various apparatuses and methods for varying segment activation in a segmented power amplifier are disclosed herein. For example, some embodiments provide a power amplifier including an input, an...
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8134409 |
Radio frequency power amplifier
A radio frequency power amplifier includes an input terminal to which a radio frequency signal is applied; a first hetero-bipolar transistor (HBT), which amplifies the radio frequency signal; a...
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8130033 |
Switching low noise amplifier
Disclosed are embodiments of an integrated circuit device, method and design structure for selectively amplifying one of multiple received input signals. The embodiments incorporate at least two...
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8130040 |
Power amplifier with two transistors and traces forming two transformers
Methods to implement low cost, high efficiency, low loss power combiner with novel matching circuits are disclosed. A narrow band power combiner enables a high power and high efficiency radio...
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8130043 |
Multi-stage power amplifier with enhanced efficiency
A multi-stage RF/Microwave power amplifier circuit is provided that is capable of operating efficiently at multiple output power levels. The amplifier comprises first and second amplifying stages,...
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8130041 |
Power amplifier device
Provided is a power amplifier device. The power amplifier device includes: a cutoff unit cutting off a direct current (DC) component of a signal delivered from a signal input terminal; a circuit...
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8115554 |
Semiconductor device
According to one embodiment, there is a semiconductor device including a first active element, a second active element connected in parallel with the first active element, and a first stabilization...
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8116700 |
Reducing common mode effects in an output stage
In one embodiment, a power amplifier may include an output stage with multiple transformers and corresponding matching capacitances. The capacitances may include a first matching capacitance...
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8115546 |
Apparatus and method for maximizing performance of peaking amplifier in doherty amplifier
An apparatus and method for maximizing the performance of a peaking amplifier in a Doherty amplifier are provided. The apparatus includes a splitter, a carrier amplifier, an (N−1) number of p...
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8115539 |
Operational amplifier
Provided is an operational amplifier capable of correcting an offset voltage of an element to be connected to an input terminal. The operational amplifier includes a main amplifier and an offset...
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8111098 |
Segmented linear FM power amplifier
Various apparatuses and methods for amplifying an FM signal in a segmented linear power amplifier are disclosed herein. For example, some embodiments provide an apparatus including a signal input,...
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8106711 |
Stacked pre-driver amplifier
A stacked pre-driver stage and a power amplifier including the stacked pre-driver stage are described. The stacked pre-driver stage comprises stacked pre-drivers arranged in series between a supply...
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8102212 |
Signaling system with low-power automatic gain control
An integrated circuit receiver includes a first channel comprising an amplifier responsive to a first gain control value in a first mode to receive an input signal and generate a first amplified...
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8102206 |
Multi-path, multi-stage feed-forward operational amplifier circuit
An embodiment of an amplifier circuit includes a plurality of amplifiers connected between input and output terminals to form at least partially parallel amplification paths between the terminals....
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8098092 |
Power amplifier
A Doherty amplifier is provided with a clipping circuit for making signal power flow to ground if the signal power becomes equal to or higher than a predetermine value in order to prevent a carrier...
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8076976 |
Semiconductor device
The present invention provides a technology capable of achieving an improvement in the characteristic of a power amplifier when a power amplifier mounted onto mobile communication equipment such as...
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8072264 |
Amplifying device
The present invention concerns a composite amplifier and a method for controlling the amplitude of a composite amplifier in a node of a wireless communication system. The composite amplifier...
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8072263 |
Power control device for a signal with optimized input dynamics
A signal power control device comprises two amplification channels. A first amplification channel comprises a first transconductance amplifier and a second amplification channel comprises an...
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8064555 |
Input/output multi-level channelizer amplifier
A system includes an input multi-level channelizer, an output multi-level channelizer, and more than one amplifiers connected between the input and output channelizers. The input and output...
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8054131 |
Transconductor circuit
A transconductor circuit, particularly according to the multi-tanh principle, having a first input node and a second input node, a first differential amplifier coupled to the first and second input...
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8054126 |
Dynamic bias supply devices
A dynamic bias supply device for multiple parallel power amplifiers, in which a plurality of parallel power amplifiers including a Doherty amplifier are connected in parallel, is provided. The...
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8049558 |
Switchable balanced amplifier
A switchable balanced amplifier having multiple, configurable independent input/output paths. Switching networks coupled to the input and/or output quadrature couplers of the balanced amplifier are...
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8044717 |
Amplifier circuit and method therefor
In one embodiment, an amplifier circuit is formed to minimize pop and click noise on the outputs of the amplifier circuit. The amplifier circuit is configured to place an output stage of the...
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8035444 |
Amplifier apparatus
An amplifier capable of lowering an electrical current flowing in a peak amplifier before a carrier amplifier becomes saturated to thereby improve the efficiency of an entirety of the amplifier is...
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8035445 |
Frequency response compensation amplifier arrangements
An embodiment of the present invention provides a system comprising a summing device and first amplifier portion. The summing device is coupled to an output node. The first amplifier portion is...
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8026765 |
Audio frequency amplifier
An amplifier is operable in push-pull mode, single-ended mode, or a composite mode that is an intermediate between single-ended and Push-pull modes. Moreover, at least one output device may be...
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8026763 |
Asymmetric multilevel outphasing architecture for RF amplifiers
A radio frequency (RF) circuit includes a power supply configured to generate a plurality of voltages, a plurality of power amplifiers, each having an RF output port and a power supply input port,...
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8026762 |
High efficiency transmitter for wireless communication
The present invention provides an amplifier for a wireless transmitter. In one embodiment, the amplifier includes a signal separator for decomposing an input signal into constant envelope signals...
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8026764 |
Generation and amplification of substantially constant envelope signals, including switching an output among a plurality of nodes
Methods and systems for vector combining power amplification are disclosed herein. In one embodiment, a plurality of signals are individually amplified, then summed to form a desired time-varying...
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8022760 |
3-way Doherty amplifier with minimum output network
A 3-way Doherty amplifier has an amplifier input and an amplifier output. The amplifier has a main stage, a first peak stage and a second peak stage. The amplifier has an input network connecting...
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8022759 |
Dynamic range improvements of load modulated amplifiers
The present invention relates to methods and devices to control and operate the functionality of a power amplifier system (100) capable of operating in at least three differential amplification...
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8018276 |
Signal processing method and power amplifier device
A signal processing method and power amplifier device are disclosed. The method may include receiving a signal to be transmitted, decomposing an original signal into a plurality of smaller...
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8013673 |
Radio frequency power amplifier
An RF power amplifier according to an implementation of the present invention includes: a first power amplifier which linearly amplifies a first RF signal of a first frequency band; a second power...
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8004364 |
High power RF solid state power amplifier system
A high power, high frequency, solid state power amplifier system includes a plurality of input multiple port splitters for receiving a high-frequency input and for dividing the input into a...
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8005445 |
RF power amplifying device and wireless communication terminal device
A RF power amplifying device is constituted by a system of a balanced amplifier including first phase shifters, a first RF power amplifier, a second RF power amplifier, second phase shifters, and a...
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8004356 |
Tuning multiport amplifiers
A method of tuning a multiport amplifier and a multiport amplifier are provided. The multiport amplifier comprises an even number of microwave power amplifiers arranged in parallel, a series of...
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8004371 |
Band reject filters
Distributed band reject filters are disclosed. A first radio frequency band reject filter is disclosed having a splitter having a first input port, a first output port and a second output port, the...
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7999613 |
Method and apparatus for an improved power amplifier
An amplifier system is provided that has a first balun with an input and an output, and a second balun with an input and an output. A first set of amplifiers is coupled in series and to the output...
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7999611 |
Differential amplifying device
A differential amplifying device includes a first differential amplifying unit that receives an input signal and a reference voltage. The first differential amplifying unit amplifies the input...
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7994855 |
Amplifier arrangement
A gain-controlled RF amplifier system has an input node and an output node. The system has a plurality of amplifier devices, selectively connectable between the input node and the output node. The...
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