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Matches 1 - 50 out of 36,159

Document Document Title
WO/2019/008751A1
A first harmonic processing circuit (16) includes a first adjustment member for adjusting the harmonic impedance at an input terminal of a semiconductor amplifying element (5), and a second harmonic processing circuit (19) includes a sec...  
WO/2019/003617A1
The distortion compensation device (100) is provided with: a first divider (102) for outputting an input signal divided into a first system signal and a second system signal; a distortion generation circuit (105) for generating a distort...  
WO/2019/001281A1
A broadband Doherty power amplifier comprises: a main amplifier (T1) and at least one auxiliary amplifier (T2), wherein an output of the main amplifier (T1) is connected to a first balance network (B1), and an output of the auxiliary amp...  
WO/2019/000168A1
Provided are a correction device and a correction method. The correction device comprises a first adjustment module, a plurality of second adjustment modules, a correction calculation module and a plurality of non-ideal channels, wherein...  
WO/2019/002848A1
This application relates to methods and apparatus for monitoring the operating state of an audio circuit, and in particular for detecting a defective operating state, as may occur after an Electrical Over-Stress (EOS) event. An audio cir...  
WO/2019/005101A1
Methods and architectures for closed loop digital pre-distortion (DPD) in a multi-stream phased array communication system include sampling outputs, from transmit antennas or dedicated analog detectors, of a plurality of RF power amplifi...  
WO/2018/236682A1
A semiconductor device includes a plurality of unit cell transistors on a common semiconductor structure, the unit cell transistors electrically connected in parallel, and each unit cell transistor including a respective gate finger. Res...  
WO/2018/235261A1
The present invention is provided with an envelope detecting unit (9) that detects the envelope of the signal of an amplification target. The present invention is configured so that the larger the envelope detected by the envelope detect...  
WO/2018/228603A1
Disclosed are a radiofrequency power amplifier module having high linearity and power-added efficiency and an implementation method. The radiofrequency power amplifier module comprises a bias circuit, a linearization circuit, and a power...  
WO/2018/227998A1
Disclosed in the present invention is a temperature compensation circuit for a radio frequency power amplifier; the temperature compensation circuit comprises: a temperature control circuit and a negative feedback circuit; the temperatur...  
WO/2018/227347A1
Embodiments of the present invention relate to the technical field of communications. Disclosed are a method and device for reducing the power consumption of a PA, allowing the power consumption of the PA to be reduced to the greatest ex...  
WO/2018/230229A1
The present invention achieves an amplifier, represented by a TIA, in which band characteristics are optimized, the probability of oscillation is reduced, and that exhibits little variation in band characteristics. This amplifier, which ...  
WO/2018/228773A1
An optical receiver circuit (100) has a first photodiode (102) and a second diode (103) and an amplifier circuit (104-108) connected to the diodes. The photodiodes are arranged so that the second photodiode receives substantially the sam...  
WO/2018/228772A1
A TIA circuit (1) has an input terminal (11), and an odd number of at least three inverting amplifier stages (A1, A2, and A3) linked in series to the input terminal. A reference voltage source (16) is connected to the source of the trans...  
WO/2018/225143A1
There are provided: an amplifier (3) for amplifying a signal including a first signal and a second signal having a frequency different from that of the first signal; an input-side bias circuit (6) of which one end is connected to a signa...  
WO/2018/224161A1
Circuitry, a method, means and a computer program configured to reduce distortions in an amplified signal to be radiated by an antenna. The circuitry comprises: statistical property monitoring logic operable to monitor at least one stati...  
WO/2018/220346A1
An audio driving circuit (200) has an amplifier module (102) in a forward signal path between an input (103) for receiving an input audio signal (SIN) and an output for outputting an audio driving signal (VOUT). A pre-distortion module (...  
WO/2018/220347A1
An audio driving circuit (301) has a forward signal path between an input (103) for receiving an input audio signal (SIN) and an output (104) for outputting an output signal (SOUT) with an amplifier module (102). An error block (302) is ...  
WO/2018/219537A1
The invention relates to a method for operating a class-D amplifier (2) for an audio signal (4), which class-D amplifier contains an output stage (10) and a signal-processing unit (12) in a signal path (6), wherein a voltage (U) of at le...  
WO/2018/219542A1
The invention relates to a method for protecting a component (6) within an audio device (4) from the exceedance of a maximum internal temperature (TI), wherein a power loss (V) of the component (6) is determined, a measurement temperatur...  
WO/2018/218851A1
A rack-mount wideband solid state power amplifier. Active power amplifier modules (1) are distributed on the upper and lower surfaces of a radiator (3); a multi-channel spatial power combiner (2) is interpenetrated in the middle of the r...  
WO/2018/220668A1
The present invention is provided with a distortion compensation circuit (5) that amplifies the amplitude of a differential frequency component which is a component of a frequency difference fd between a first frequency f1 and a second f...  
WO/2018/219466A1
Systems and methods are disclosed herein that provide low-complexity Digital Predistortion (DPD) for a transceiver system that uses an Advanced Antenna System (AAS) to provide analog or hybrid beamforming.  
WO/2018/222621A1
A differential input receiver comprises an input circuit (402) having first (410) and second (418) input nodes configured to receive a differential input signal; a first output circuit (419) having a first capacitor (420) coupled between...  
WO/2018/215030A1
The invention relates to a circuit containing a transimpedance amplifier for converting two input currents into two output voltages, having a first amplifier part containing a first input, to which a first input voltage is applied, and i...  
WO/2018/215741A1
A DC-DC converter and corresponding method for transitioning between a discontinuous conduction mode, DCM, and a continuous conduction mode, CCM, wherein the DC-DC converter is configured to power a signal processing system within an int...  
WO/2018/215263A1
The invention relates to a high frequency amplifier arrangement (1) comprising: a) an amplifier part (2), which has an output (100) having two output connections (101,102), b) a balun transformer (7), which has an input (105) having two ...  
WO/2018/212900A1
Various aspects of this disclosure describe reducing distortion of a power amplifier (202) by coupling a common mode signal (Vcm), such as determined from a voltage supply signal (Vboost) of the power amplifier (202) or output of the pow...  
WO/2018/211085A1
Aclass-D amplifier with an amplifier input and an amplifier output, comprising: an input stage (308) with a self-oscillating pulse-width modulator (304) configured to receive an analog input signal via the amplifier input and to output a...  
WO/2018/213016A1
An impedance converter circuit achieves negative capacitance and/or negative inductance for radio frequency (RF) front end impedance matching for low noise amplifier (LNA) designs. The impedance converter circuit includes a first transis...  
WO/2018/212857A1
An amplifier circuit includes an amplifier and a voltage boost circuit configured to provide a variable supply voltage to the amplifier, the variable supply voltage continuously proportional to an audio input signal, the variable supply ...  
WO/2018/211495A1
Embodiments of the disclosure relate to optimizing power efficiency of a power amplifier circuit to reduce power consumption in a remote unit in a wireless distribution system (WDS). A power amplifier circuit is provided in the remote un...  
WO/2018/205237A1
A single-frequency line-based millimeter wave dual-band Doherty power amplifier, comprising: a dual-band power splitter (110), a main amplifier dual-band input matching network (120), an auxiliary amplifier dual-band input matching netwo...  
WO/2018/203968A1
A configurable radio frequency system. The system includes: a plurality of radio frequency cells connected in a cascade. Each of the radio frequency cells includes an input switch connected to an input of the radio frequency system, an o...  
WO/2018/195843A1
Embodiments of the disclosure generally relate to a multi-channel Doherty power amplifier, a multi-antenna transmitter, and a method for turning on the multi-channel Doherty amplifier. The multi-channel Doherty power amplifier includes: ...  
WO/2018/200934A1
In accordance with embodiments of the present disclosure, a method for power supply rejection for an amplifier may include generating a correction signal by multiplying a quantity indicative of a power supply voltage of the amplifier by ...  
WO/2018/197918A1
Apparatus and methods for an improved-efficiency Doherty amplifier are described. The Doherty amplifier may include a two-stage peaking amplifier that transitions from an "off" state to an "on" state later and more rapidly than a single-...  
WO/2018/197917A1
Apparatus and methods for an inverted Doherty amplifier operating at gigahertz frequencies are described. RF fractional bandwidth and signal bandwidth may be increased over a conventional Doherty amplifier configuration when impedance- m...  
WO/2018/197016A1
An amplifier comprising an amplifying device (110) and a bias circuit (120) for providing a bias voltage for the amplifying device (110). The bias circuit (120) is configured to provide the bias voltage in dependence of an output signal ...  
WO/2018/200523A1
An apparatus may include a delta-sigma modulator for quantization noise shaping of a digital signal, a digital-to-analog converter configured to generate an analog signal from the digital signal, and an amplifier configured to amplify th...  
WO/2018/200936A1
In accordance with embodiments of the present disclosure, a system may include a buffer and a switch coupled between the buffer and a voltage supply such that the switch controls a varying voltage at a varying voltage node coupled to the...  
WO/2018/199413A1
The present invention relates to a high power RF signal amplification device having a water cooling type cooling system for rapidly and uniformly cooling a plurality of RF signal amplifiers for amplifying RF signals into high outputs, th...  
WO/2018/197694A1
The invention relates to a signal amplifier circuit for amplifying a signal, particularly an audio amplifier circuit, comprising: at least one first amplifier transistor (Q1) and at least one second amplifier transistor (Q2), wherein sai...  
WO/2018/197096A1
The invention relates to a device (100) for controlling a self-conducting n-channel output stage field effect transistor (V1), comprising a control signal input (110), a control signal output (120) for connection to a gate electrode (V1G...  
WO/2018/197919A1
Apparatus and methods for an inverted Doherty amplifier operating at gigahertz frequencies are described. RF fractional bandwidth and signal bandwidth may be increased over a conventional Doherty amplifier configuration when impedance-ma...  
WO/2018/200513A1
An apparatus for generating an output signal, may comprise a signal path having an analog signal path portion having an analog magnitude droop, a digital signal path portion having a digital magnitude droop, a digital-to-analog converter...  
WO/2018/199347A1
The present invention provides a complex speaker system comprising an ultra-directional speaker system, capable of simultaneously outputting ultra-directional and non-directional signals, the complex speaker system comprising: a signal i...  
WO/2018/192252A1
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/2018/194970A1
A method for offset calibration may include decoupling a modulator input of a first path from a first stage output, coupling a second path output to the modulator input, applying a common-mode voltage to a second path input, receiving a ...  
WO/2018/191119A2
An amplifier may include a final output stage switchable among a plurality of modes comprising a mode which is enabled by coupling an output driver to an output of the final output stage and a preconditioning circuit coupled to the outpu...  

Matches 1 - 50 out of 36,159