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WO/2022/185505A1 |
Provided is a distortion compensation circuit capable of suppressing divergence in an operation performed by means of an iterative operation in iterative learning control processing. A learning device (12) for a distortion compensation...
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WO/2022/186711A1 |
An apparatus (100) for predistortion of a digital signal in a transmitter chain comprises a feeder (102), a decomposer (104), an evaluator (106), a predistortion unit (108) and a composer (110). An input signal (202) sampled at a first s...
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WO/2022/185459A1 |
A power amplifier according to this disclosure includes: a main transistor that amplifies an input signal input from a gate terminal, outputs the amplified input signal from a drain terminal, and has a drain current delay characteristic ...
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WO/2022/185029A1 |
An amplifier circuitry (300) includes a linear amplifier stage (110) that receives an input signal and outputs a first drive signal to an output node (302) and a switching amplifier stage (130) operable to output a second drive signal to...
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WO/2022/179195A1 |
Disclosed in the embodiments of the present application are a bias circuit and an amplifier. The bias circuit comprises a mirror current source and a current-to-voltage converter; a first end of the mirror current source is connected to ...
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WO/2022/182045A1 |
In a communication circuit and an electronic device comprising the communication circuit according to various embodiments, the communication circuit comprises: an amplifier module including a first amplifier and a second amplifier for am...
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WO/2022/180762A1 |
A differential amplification device is configured to include: a first transistor (1-1) that has a first terminal (1-1a) and a second terminal (1-1b), amplifies a first signal provided to the first terminal (1-a), and outputs the amplifie...
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WO/2022/183177A1 |
Apparatus and methods for pre-distorting a radio frequency transmit signal based on local oscillator clock shaping are disclosed. In certain embodiments, one or more clock signals generated by a local oscillator and used for mixing in a ...
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WO/2022/180373A1 |
This application relates to current sensing, in particular for a signal processing circuit (500) for outputting an output signal (Sout) based on an input signal (Sin). An output stage (101) includes an output transistor (102) driven, in ...
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WO/2022/177482A1 |
Method and device(s) (100; 110; 2000) for supporting performance of machine learning based DFR and DPD on multiple digital input signals (x1..xB; c1..cB) relating to different frequency bands (B), respectively, in order to signal conditi...
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WO/2022/176139A1 |
A distortion compensation device (1) is configured so as to comprise: a weighting unit (11) that divides a to-be-amplified transmission signal into multiple transmission signals, and weights each of the transmission signals, after divisi...
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WO/2022/174645A1 |
Provided in the embodiments of the present application are an amplitude modulation-phase modulation compensation circuit, a radio frequency power amplifier and a device. The compensation circuit comprises a detection circuit, a reconfigu...
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WO/2022/174631A1 |
The present application provides a multi-frequency low noise amplifier, comprising: an input matching network, an amplifier tube and an output matching network; the input matching network comprises a first out-of-band suppression circuit...
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WO/2022/176115A1 |
This voltage setting circuit (11) comprises: a frequency comparator (14) for comparing the oscillation frequency of a first distributed voltage-controlled oscillator (13_1) and that of a second distributed voltage-controlled oscillator (...
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WO/2022/176067A1 |
A wireless communication circuit (1) comprises an antenna (10), a transmission circuit (2) including an output amplifier (4) that outputs a transmission signal (STx) to the antenna (10), a reception circuit (6) including an LNA (8) to wh...
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WO/2022/174403A1 |
The embodiments of the present application discloses a noise reduction circuit, comprising: a first signal detection module, a first grounding circuit, a first trans-impedance amplifier, a second operational amplifier and a reference vol...
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WO/2022/175755A1 |
The invention relates to a transimpedance amplifier, for instance a transimpedance amplifier of an active antenna comprising a loop aerial or a screened loop aerial. A transimpedance amplifier of the invention comprises: an input port (1...
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WO/2022/176187A1 |
The distributed circuit (10) according to the present invention is provided with a first transmission line (121) having an input end into which an input signal is input, a second transmission line (122) having an output end from which an...
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WO/2022/176947A1 |
A high frequency power amplification device (200) comprises, on a first main surface (101) of a multilayer sub-mount substrate (100): a carrier amplification semiconductor device (11); a peak amplification semiconductor device (12); a bi...
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WO/2022/173862A1 |
A system and method which includes receiving an input signal having an envelope and generating an envelope detection signal corresponding to the envelope. A bias current (IDD) provided to an amplifier circuit (308) is adjusted based upon...
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WO/2022/173357A1 |
The present invention relates to a method (300) for compensating output efficiency of a plurality of amplifiers arranged to operate with an antenna array, where the antennas in the antenna array are electromagnetically coupled to each ot...
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WO/2022/173540A1 |
An amplifier (800) has a first amplifying circuit (810) configured to receive a voltage input and to output an amplified current, a second amplifying circuit (820) configured to receive the amplified current and to output an amplified vo...
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WO/2022/170645A1 |
The present invention relates to the technical field of audio power amplifiers. Disclosed is a low-distortion class D power amplifier applied to a high-power range, comprising: a voltage control module, a current self-excited inner loop ...
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WO/2022/170816A1 |
Disclosed are a bias circuit of a power amplifier, and an apparatus and a device. The circuit comprises a first-part circuit, a second-part circuit and a power source, wherein the power source is connected to a power source end of the fi...
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WO/2022/172868A1 |
Provided is a power amplification circuit for performing power amplification appropriately in accordance with the state of an input signal. A power amplification circuit (10) comprises: a divider (101) which includes a variable inductanc...
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WO/2022/167142A1 |
The invention relates to a Doherty amplifier circuit (2) for a transmission stage (1), having a primary high-frequency, HF, amplifier element (5) and a secondary HF amplifier element (6), which, when in operation, is designed to effect a...
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WO/2022/168966A1 |
A power amplifier circuit comprising a first carrier amplifier that includes a differential amplifier circuit which has a first transistor and a second transistor, and a first peak amplifier that is formed on the same semiconductor subst...
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WO/2022/165569A1 |
The audio amplification system comprises a power supply (100) connected to a feedback circuit (107) that is connected to the output filter of the amplifier such that the voltage of the power supply (100) dynamically adjusts to the output...
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WO/2022/169676A1 |
A semiconductor device package includes a first and a second input lead and a plurality of uniform transistor-based components, the plurality of uniform transistor-based components comprising a first subset of the uniform transistor-base...
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WO/2022/168781A1 |
A power amplification module comprising: a carrier circuit that includes one or more carrier amplifiers; a peak circuit that includes one or more peak amplifiers; a carrier control circuit that controls the base current or the gate volta...
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WO/2022/170335A1 |
The operational amplifier disclosed includes an input stage configured to receive power from a floating supply circuit in a low voltage range that can float according to the common mode voltage at the input. The low voltage supply facili...
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WO/2022/169365A1 |
The present invention relates to a push-pull amplifying unit and a Doherty amplifier. The push-pull amplifying unit comprises a first amplifier, a second amplifier, a first shunt inductor, and a second shunt inductor. The first and secon...
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WO/2022/168214A1 |
This temperature compensation circuit (1) comprises: a first current path that carries out temperature compensation for a second transistor (12) in a first temperature range; and a second current path having a diode (31) that transitions...
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WO/2022/170178A1 |
A circuit includes a gain stage (112), first and second amplifiers (121, 122), and a comparison circuit (128). The gain stage (112) has an input and an output. The first amplifier (121) has an input and an output. The input of the first ...
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WO/2022/166534A1 |
A pre-distortion processing method and apparatus. The method comprises: obtaining a first continuous timing signal comprising a timing signal to be processed (S201); performing normalization processing on the first continuous timing sign...
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WO/2022/169715A1 |
Disclosed are systems for adjusting bias power provided to a radio-frequency amplifier to one or more figures of merit based on sensed characteristics of the amplifier and/or characteristics of the input or output power.
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WO/2022/169713A1 |
Circuits and methods for achieving good amplifier AM-AM and AM-PM metrics while achieving good power, PAE, linearity, and EVM performance. Embodiments compensate for a non-linear distortion profile (e.g., an AM-PM and/or AM-AM profile) i...
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WO/2022/169362A1 |
A method of applying an activation scheme to a digitally controlled segmented RF power transmitter having a plurality of adjacent segments (3), each segment (3) having an associated activation area, the segments (3) being controlled by o...
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WO/2022/169666A1 |
Circuits and methods for achieving good AM-AM and AM-PM metrics while achieving good power, PAE, linearity, and EVM performance in an amplifier. Differential amplifier embodiments include cross¬ coupled common-gate transistors (MEQ+, ME...
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WO/2022/167203A1 |
The invention relates to a high-frequency, HF, power amplifier circuit (1) having a 90° hybrid coupler (14) and a first HF power amplifier element (12) which is designed to amplify a first component of part of an input signal and to fee...
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WO/2022/164533A1 |
A system may include a front end differential amplifier having two input terminals, two input resistors, each of the two input resistors coupled to a respective one of the two input terminals, and an input common mode biasing circuit for...
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WO/2022/165345A1 |
A class-D amplifier provides low-distortion operation near one of the output power supply rails. The class-D amplifier has a first driver circuit, a second driver circuit and a control circuit. In some embodiments, the control circuit se...
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WO/2022/160953A1 |
A weak current amplifier circuit and a sensor system. The weak current amplifier circuit is provided with two stages of amplification structures and two stages of filtering structures, which are arranged in an intersecting manner and com...
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WO/2022/160248A1 |
The embodiments of the present application provide a multi-band power amplification circuit and a radio frequency transceiver, which are used to increase VBW on the premise of ensuring linear correction and reducing circuit loss. The mul...
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WO/2022/161609A1 |
A distributed amplifier circuit (200a) includes N transistors, N is greater or equal to 1. Each transistor is connected to an input line (204) common to all transistors so as to allow applying a common input signal to each transistor thr...
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WO/2022/163791A1 |
The present invention makes it possible to reduce the noise component of a power supply voltage that is outputted to a power amp and to shorten the wiring between a filter and an output terminal that is connected to the power amp. A trac...
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WO/2022/164601A1 |
A field effect transistor (FET) transconductance device with varying gate lengths is disclosed. In one aspect, the varying effective gate lengths are used in a differential architecture to obtain linear even and odd order operation simul...
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WO/2022/155802A1 |
An instrumentation amplifier (100), a related chip, and an electronic apparatus. The instrumentation amplifier (100) is configured to sequentially operate in a sampling phase and a holding phase, to generate a second positive output sign...
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WO/2022/155786A1 |
A precise linear feedback amplification circuit, comprising an RCA interface and an XLR interface. The RIGHT end of the RCA interface is connected to a resistor R3 and a port 5 of a switch RY1A by means of a capacitor C3, and the LEFT en...
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WO/2022/156828A1 |
A grounded coplanar waveguide structure-based radio frequency broadband power amplifier and a design method. The power amplifier comprises, arranged from top to bottom, a microstrip grounded coplanar waveguide module (101), a PCB substra...
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