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Matches 1 - 50 out of 36,335

Document Document Title
WO/2019/094654A1
One example includes a transconductor system (10). The system (10) includes a first transconductance amplifier (12) that generates a control current in response to a first input voltage. The system (10) also includes a second transconduc...  
WO/2019/091541A1
A power amplifier (300), comprising a main amplifier (320); a balanced amplifier (310) connected using a hybrid combiner (330), wherein an isolated port of the hybrid combiner (330) is connected to the main amplifier (320), wherein power...  
WO/2017/218748A3
Optimized impedance characteristics of a variable impedance device causes the apparatus to transmit wireless signals with minimal out-of-band transmission at an optimized efficiency of the power amplifier. The variation of impedance char...  
WO/2019/086853A1
An amplifier (500) comprising an amplifying element (M1) having a voltage input across a first terminal and a third terminal and a voltage controlled current path between a second terminal and the third terminal; and a trifilar transform...  
WO/2019/085427A1
Provided are an audio playback circuit and an audio playback device. The audio playback circuit comprises a power module, a power amplifier, a coupling capacitor, a load, and a plosive suppression circuit. An output end of the power ampl...  
WO/2019/087430A1
A Digital Power- Amplifier (DP A) system includes a power amplifier (PA) circuit having control inputs and an output for generating output signals, and an adaptive control circuit that comprises an input interface, an output interface, a...  
WO/2019/084911A1
A Doherty power amplifier (400) is disclosed. The Doherty power amplifier (400) comprises a splitter network (402), a carrier amplifier path (404) and a peaking amplifier path (406). The saturation output power ratio between a peaking (4...  
WO/2019/081422A1
A sensor arrangement comprises a sensor (1) having a first terminal (3) and a second terminal (5), and an amplifier (9) having an amplifier input (11) for applying an input signal and an amplifier output (13) for providing an amplified i...  
WO/2019/082304A1
A distortion compensation circuit (100) comprises: an amplitude calculation unit (11) that calculates an amplitude value of an input signal and outputs a first amplitude value, which is the calculated amplitude value; an amplitude conver...  
WO/2019/079999A1
A harmonic control circuit and apparatus for use in a radio frequency device as well as a method for manufacturing the harmonic control apparatus are disclosed. According to an embodiment, the harmonic control circuit comprises a transmi...  
WO/2019/080566A1
Provided by an embodiment of the present invention are a power amplifier protection method and device, the device comprising: a baseband signal receiving module, which converts a received optical signal into a baseband digital signal; a ...  
WO/2019/081018A1
The present invention relates to a radio frequency front end for wireless communication, es- pecially to a radio frequency front end (100) in which transmitting and receiving is performed using the same antenna. The front end comprises a...  
WO/2019/078529A1
The present embodiment relates to a method for calibrating power amplifier performance in which the output characteristics of the power amplifier can be calibrated to the maximum by making it possible to individually compensate for the c...  
WO/2019/077249A1
The invention relates to a modulator circuit of a Hi-Fi system comprising: a first modulator (202) suitable for modulating, during an operating phase of the Hi-Fi system, a digital audio input signal (x[n]) to generate a first modulated ...  
WO/2019/079650A1
A system includes an amplification circuit and offset calibration circuit. The amplification circuit includes a modulation circuit operable to modulate a received signal, an amplifier operable to amplify the modulated signal, and a modul...  
WO/2019/078993A1
A rail-to-rail sense amplifier includes a PMOS differential pair and an NMOS differential pair (Ml, M2) that are arranged in parallel with regard to a biasing network for driving a class AB output stage (M4, P4). The sense amplifier incl...  
WO/2019/075776A1
Provided is a radio-frequency power amplification circuit. The radio-frequency power amplification circuit comprises: a power amplification sub-circuit (210, 310, 710) and an output matching sub-circuit (220, 320, 720), wherein the power...  
WO/2019/076841A1
The present invention is directed to a radio frequency, RF, transmit system for a magnetic resonance examination system, comprising a digital baseband modulator (100) configured for generating a digital baseband signal, a digital feedbac...  
WO/2019/075694A1
Disclosed are a Doherty power amplifier (2), a controlling method and a device. In the Doherty power amplifier (2), the even order harmonic components can be fed to the drain of the amplifier to realize even order harmonic modulation. Th...  
WO/2019/074384A1
Methods and systems for power amplification of time varying envelope signals are disclosed herein. In one embodiment, a plurality of signals with quasi constant or constant envelope are generated from the decomposition of the quantized v...  
WO/2019/071563A1
A Doherty power amplifier and a device are disclosed. In a combiner of the Doherty power amplifier, a first input port and a termination port are open coupled by at least two coupled microstrip lines and/or a second input port and an out...  
WO/2019/072400A1
The invention relates to a power amplifier (100). In particular the invention relates to devices system and arrangements related to a power amplifier operating as a 3-way Doherty amplifier and for driving thereof. The power amplifier com...  
WO/2019/070694A1
A packaged transistor amplifier includes a package having an input lead and an output lead; a transistor stage having a plurality of unit cell transistors that are electrically coupled to the input lead in parallel, each of the unit cell...  
WO/2019/069115A1
Apparatus and methods for a multiclass, broadband, no-load-modulation power amplifier are described. The power amplifier (500) may include a main amplifier (532) operating in a first amplification class and a plurality of peaking amplifi...  
WO/2019/067084A1
An amplifier (10) having a Radio Frequency (RF) power level detector circuit (12) for producing a control signal in accordance with a power level of an RF input signal. The control signal indicates whether the power level of the input si...  
WO/2019/067067A1
The present disclosure relates to radiofrequency (RF) communications systems that may operate efficiently over a broad range of signal output levels. Electronic devices may employ amplification circuitry in the communication RF systems t...  
WO/2019/067040A1
A full-wave rectifier circuit (200) includes a comparator (220) configured to output a logic 1 or logic 0 by comparing an analog input signal to a reference voltage. The circuit further includes an analog switch (230) with a control inpu...  
WO/2019/057990A1
The present disclosure relates to a continuous-time delta-sigma modulator for converting an analog input signal to a digital output signal, said continuous-time delta- sigma modulator comprising a gain stage in the form of at least one a...  
WO/2019/060535A1
Exemplary impedance matching circuit for an amplifier device comprises a broadband impedance transformer configured to transform, over a fundamental frequency range, an impedance associated with an input port or an output port of the imp...  
WO/2018/192252A8
A digital pre-distortion processing method and apparatus, the method comprising: acquiring an input signal of a power amplifier and an output signal of the power amplifier (S201); updating a pre-distortion coefficient, according to the a...  
WO/2019/052566A1
A power amplifier and an electronic device. Staggered tuning is firstly performed and then power synthesis is performed, to form a two-stage power amplifier architecture; moreover, a former stage and a drive matching an input thereof are...  
WO/2019/051660A1
A radio-frequency power supply for improving the efficiency of a radio-frequency power amplifier (3), relating to the technical field of semiconductor process equipment. The radio-frequency power supply comprises: obtaining a radio-frequ...  
WO/2019/055895A1
An apparatus includes a first circuit and a plurality of second circuits. The first circuit may be configured to generate a pair of quadrature signals from a radio-frequency signal. The second circuits may each comprise a plurality of ca...  
WO/2019/054980A1
Systems, circuitries, and methods for predistorting a digital signal in a transmit chain based on a predistortion function are provided in which the function is determined based on a first digital signal or a first transmit chain state. ...  
WO/2019/048065A1
An amplifier circuit (70) that comprises a first and a second field-effect transistor (M1, M2) of the same type is disclosed. It further comprises an input terminal (in) connected to the gate of the second field-effect transistor (M2), a...  
WO/2019/048045A1
According to an aspect, there is provided a method for power-amplification of a transmission signal, comprising: obtaining the transmission signal with phase and amplitude modulation; generating a power-amplified polar signal for approxi...  
WO/2019/047041A1
Provided is a feedforward amplifier, comprising: a carrier cancellation loop (110) having an input end serving as an input end of the feedforward amplifier; a distortion cancellation loop (120) having an input end connected to an output ...  
WO/2018/031347A8
A circuit including a radio frequency (RF) amplifier including a transistor configured to receive an RF signal at its control terminal, a capacitor coupled to a first terminal of the transistor, an inductor coupled to a second terminal o...  
WO/2019/043434A1
Systems and methods are disclosed herein for selectively compensating for a specific Intermodulation Distortion (IMD) product(s) of an arbitrary order in a transmitter system. In some embodiments, a method of compensating for one or more...  
WO/2019/045866A1
Certain aspects of the present disclosure are directed to a digital predistortion (DPD) device for use within a wireless transmitter that permits the use of a downstream digital-to-analog converter that operates at a clock rate close to ...  
WO/2019/045867A1
Certain aspects of the present disclosure are directed to digital predistortion (DPD) for use with a multi-chain wireless transmitter. In various examples described herein, the multi-chain transmitter is configured to use a single common...  
WO/2019/039245A1
An operational amplifier 1 comprises transistors Q1 and Q2 forming an input stage, and input resistors R1 and R2 which form a filter together with parasitic capacitors C1 and C2 accompanying the transistors Q1 and Q2. Resistance values R...  
WO/2019/039650A1
The present invention relates to a Doherty combiner used in a Doherty power amplifier, the Doherty combiner comprising: a phase shift section connected to one end of a carrier amplifier so as to change a phase of an RF signal output from...  
WO/2019/034019A1
Device and method are disclosed for downlink gain compensation at a radio unit. According to an embodiment, the device comprises a pre-distortion circuit, a digital gain adjuster, a gain determiner and a first gain controller. The pre-di...  
WO/2019/036303A1
Methods and systems for waveguide delay based equalization with optical splitting in optical communication may include an optoelectronic circuit comprising an input waveguide, a directional coupler, an optical delay, photodetectors, a cu...  
WO/2019/036499A1
Apparatus and methods for a no-load-modulation power amplifier are described. No-load-modulation power amplifiers can comprise multiple amplifiers connected in parallel to amplify a signal that has been divided into parallel circuit bran...  
WO/2019/031553A1
A cascode amplifier circuit (101) includes: a first transistor circuit (MM1) in which a signal is externally inputted into a signal input unit (Pi); a load circuit which is connected between the first transistor circuit (MM1) and a power...  
WO/2019/030518A1
An error amplifier for a pulse width modulation circuit is described. The amplifier includes an operational amplifier configured as an integrator and a feedback loop coupled between a signal output of the operational amplifier and an inv...  
WO/2019/031731A1
The present invention relates to an electronic device and a method for controlling an amplifier on the basis of the state of the electronic device. According to various embodiments of the present invention, the electronic device comprise...  
WO/2019/031184A1
This amplification circuit (102) is provided with: a first transistor (M1) in which a signal is inputted to a signal input part (Pi) from outside; and a load inductor (Ld) which is connected between the first transistor (M1) and a power-...  

Matches 1 - 50 out of 36,335