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9059664 Amplifier  
An amplifier includes a signal processing circuit configured to generate an orthogonal signal orthogonal to an input signal; a first D/A converter configured to convert the orthogonal signal into...
9030260 Dual-band high efficiency Doherty amplifiers with hybrid packaged power devices  
An amplifying structure includes a main amplifier configured to amplify a first signal; and a peak amplifier configured to amplify a second signal, each of the main amplifier and the peak...
9030255 Linearization circuit and related techniques  
Circuits and techniques to linearize the operation of an RF power amplifier are described. A linearizer circuit may include a non-amplification signal path which includes a delay line and an...
9026060 Bidirectional matching network  
A bidirectional matching network is disclosed. In an exemplary embodiment, an apparatus includes a first matching circuit connected in a first signal path between a node and a first amplifier, the...
9024690 Amplifier linearization using non-standard feedback  
An amplification unit is provided. The amplification unit, comprises a first amplifier, a second amplifier, a first sensor, a first predistortion component, and a signal combiner. The first...
9024687 Method and circuit for driving a switch-mode amplifier array  
A circuit arrangement for generating the drive signals for at least three radio frequency switch-mode amplifiers is described. The circuit arrangement comprises at least two switch-mode amplifiers...
9020453 RF amplifier architecture and related techniques  
A radio frequency (RF) power amplifier system or transmitter includes one or more power amplifiers and a controller that is configured to adjust amplitudes and phases of RF input signals of the...
9019015 Wideband and reconfigurable Doherty based amplifier  
The present disclosure provides a power amplifier comprising a main amplifier and an auxiliary amplifier. The power amplifier is configured to deliver an output power Pout. A First Efficiency Peak...
9019010 Integrated stacked power amplifier and RF switch architecture  
Combination circuitry includes a relatively small preamplifier and includes hybrid circuitry. The hybrid circuitry is configured to perform mode switching while also performing some amplification,...
9014619 Methods and systems for satellite communications employing ground-based beam forming with spatially distributed hybrid matrix amplifiers  
A satellite communications system includes a satellite configured to communicate with terminals, a station configured to communicate signals intended for the terminals to the satellite via a...
9007142 Integrated output combiner for amplifier system  
An output matching circuit for electronic amplifiers in the form of an integrated circuit is disclosed. The integrated circuit includes a first circuit, a second circuit, and a power sampling...
9000842 Amplifying apparatus and control method  
An amplifying apparatus includes an amplifying unit that includes multiple amplifiers coupled in parallel; a measuring unit that measures in a predetermined period, frequency distribution of any...
8994450 Doherty power amplifier, and method and device for improving power amplification efficiency of Doherty power amplifier  
One aspect of the present invention provides a method for improving power amplification efficiency of a Doherty power amplifier. The method is applied to a Doherty power amplifier that has two...
8988147 Multi-way Doherty amplifier  
The present disclosure provides a multi-way Doherty amplifier that includes an amplifier input, an amplifier output, a main amplifier having an input connected to the amplifier input, and at least...
8989407 Audio control method and audio control apparatus  
A channel conversion part (214) performs channel conversion on audio data of a plurality of channels so that the number of channels thereof is converted to an appropriate number of channels for...
8981850 Multi-frequency multi-standard reconfigurable doherty amplifier  
A method and system for designing and implementing a reconfigurable Doherty amplifier system are disclosed. In one embodiment, a design method includes determining, using a processor, a first set...
8981845 Digital power amplifier  
Systems and methods for power amplification using multiple digital amplifiers are provided. A power amplifier includes a first digital amplifier configured to process a digital input signal to...
8970297 Reconfigurable input power distribution doherty amplifier with improved efficiency  
A novel Doherty amplifier with improved efficiency is disclosed. In an exemplary embodiment an apparatus includes a phase shifter configured to generate a phase shifted first millimeter (MM) wave...
8963637 Semiconductor device and communication device  
A semiconductor device capable of achieving high speed performance in addition to correction of differential offset and a communication device provided with the semiconductor device are provided....
8963642 Performance of off-chip connection for power amplifier  
There is provided an integrated circuit comprising a main push-pull amplifier (108, 110) with balanced outputs and an additional push-pull amplifier (862, 863) with balanced outputs. Each of these...
8963632 High-frequency power amplifier with doherty extension  
A high-frequency power amplifier comprises a broadband amplifier (30), a Doherty extension (31) and a coupling device (33). In this context, the broadband amplifier (30) provides a power splitter...
8957727 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,...
8957733 Systems and methods for performing multi-modal power amplification  
In accordance with an embodiment of the disclosure, systems and methods are provided for multi-modal power amplification. In certain implementations, an adjustable power amplifier amplifies an...
8957734 Amplifier calibration  
A system and method of calibrating an amplifier are presented. The amplifier has a first amplification path and a second amplification path. A first state of the amplifier is identified defining a...
8952752 Smart power combiner  
A power-combined amplifier and method are provided. In one aspect, the power-combined amplifier and method overcome problems associated with decreased output power efficiency caused by phase...
8952754 Linearization of heterogeneous power amplifier systems  
Systems and methods are provided for adaptive linearization of an amplifier system having a plurality of heterogeneous amplifier paths. An amplifier system includes a plurality of amplifier paths,...
8952758 Amplifier using nonlinear drivers  
A device includes a Doherty amplifier having a main path and a peaking path. The Doherty amplifier includes a main amplifier configured to amplify a signal received from the main path and a...
8947165 Multi-mode Doherty power amplifier  
The present invention relates to a Doherty power amplifier in which a new operation mode for accomplishing high efficiency at a lower output power level is added to operation of a conventional...
8948306 Broadband high efficiency amplifier system  
Systems and methods are provided for generating a modulated radio frequency (RF) output signal representing a baseband input signal. A digitizer is configured to sample the baseband input signal...
8937509 Multi-channel biopotential signal acquisition systems  
A multi-channel biopotential signal acquisition system is disclosed. In the system, a plurality of biopotential channels is corrected for common-mode interference. In one aspect, each biopotential...
8928401 Amplifier with filtering  
Signals are processed to facilitate the mitigation and/or cancellation of undesirable components within the signal. As consistent with one or more embodiments, input/delay circuits offset the...
8928404 Amplifier performance stabilization through preparatory phase  
A method and related systems for amplifier performance stabilization of a digitally predistorted RF power amplifier are disclosed. The characteristics of power amplifiers change as a function of...
8928402 N way Doherty amplifier  
A device including a Doherty amplifier, the Doherty amplifier having an amplifier input and output. At least one main amplifier is coupled to the input via a main input impedance and to the output...
8922281 Power amplifier and operation method therefor  
In a power amplifier, in response to a power mode signal at a predetermined level, a first switch circuit supplies a signal to first and second amplifier devices that perform parallel operations....
8917140 Apparatus and method for improving efficiency in power amplifier  
An apparatus and method for enhancing the whole efficiency of power amplification in a supply modulated amplifier are provided. The power amplification apparatus includes a controller, a Doherty...
8917141 Radio frequency power amplifier circuit and method  
An amplifier circuit is disclosed for providing a radio frequency output signal having a variable signal envelope, comprising a main amplifier device and an auxiliary amplifier and a combiner...
8917144 Power amplifier  
A power amplifier includes: an amplification element amplifying an input signal; and a bias circuit supplying a bias current to an input of the amplification element. The bias circuit includes a...
8912847 Power amplifier circuit and front end circuit  
A power amplifier circuit (DIPPA), comprising a driver stage (DR) which is applicable to provide a preamplified driver signal (S_DR) dependent on a predetermined transmit signal. The power...
8912846 Doherty amplifier arrangement  
A Doherty amplifier (1) is described which comprises an input terminal (102) for receiving an input signal (101) and an output terminal (103) for providing an amplified signal (104) of the input...
8907722 Traveling wave amplifier with suppressed jitter  
A traveling wave amplifier (TWA) with suppressed jitter is disclosed. The TWA includes a plurality of unit amplifiers with the differential arrangement comprised of a pair of transistors and a...
8902000 Signal splitting apparatus suitable for use in a power amplifier  
Disclosed is a signal splitting apparatus useable in a power amplifier having two or more power amplifiers. The apparatus includes a direct gain component; and a derived gain component connected...
8896373 Wideband Doherty amplifier network  
The present invention is directed to an amplifier system that includes a main amplifier configured to amplify and a peak amplifier that operates only in a high power mode. An impedance matching...
8897468 Noise control circuit and audio receiving system using the same  
A noise control circuit includes a filter, a rectifier and a switch. The filter receives audio signals and obtains a noise signal portion of the received audio signals. The rectifier converts the...
8896372 Amplification apparatus  
A first amplification section and a second amplification section included in an amplification apparatus amplify two constant amplitude signals generated by vector decomposition. An impedance...
8890620 Power amplifier  
A power amplifier includes a first matching circuit configured to perform harmonic processing of an input signal, and a second matching circuit configured to perform the harmonic processing of an...
8890618 Zero-voltage-switching contour based outphasing power amplifier  
A zero-voltage-switching contour based outphasing power amplifier having two class-E power amplifiers connected in an out-phasing architecture coupled on opposite sides of a load being driven. The...
8884692 Multi-band power amplifier  
Disclosed is a multi-band power amplifier capable of operating at multiple frequency bands. The multi-band power amplifier includes: a power amplification unit which amplifies an input signal; a...
8878605 Amplifier circuit including digital amplifier and analog amplifier  
An amplifier circuit includes a digital amplifier configured to amplify an input signal to output a first output signal, an analog amplifier configured to amplify the input signal to output a...
8866545 Linearity power amplification device  
A linearity power amplification device is provided. The device comprises a divider, a combiner, n−1 first signal paths, and a second signal path coupled between the divider and the combiner. The...
8861619 System and method for high-frequency amplifier  
A system and method for operating an amplifier system is provided. The amplifier system includes an input providing a direct coupling configured to receive a high-frequency input signal having a...