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Matches 1 - 50 out of 36,603

Document Document Title
WO/2019/211156A1
The present invention relates to an isolation amplification circuit which comprises an input stage circuitry and a control circuitry stage interconnected through a galvanic isolation barrier. The input stage circuitry comprises a first f...  
WO/2019/205629A1
An amplification circuit and a rectifying antenna. The amplification circuit comprises: a first rectifying circuit (20), which is configured to output a first direct current signal according to an alternating current signal; a second rec...  
WO/2019/209604A1
According to one embodiment, a transmit/receive (T/R) switch includes a transmit switch, between a transmit port and an antenna port, a receive switch, between a receive port and the antenna port, a transmit inductor, coupled in parallel...  
WO/2019/208371A1
An amplifier circuit (10) according to the present invention amplifies an input signal that is a high-frequency signal. This amplifier circuit (10) is provided with: an amplifier (40) to which an input signal and a vias voltage are appli...  
WO/2019/207700A1
Conventional Doherty amplifiers require a load modulation line having an electrical length corresponding to 90 degrees, a frequency compensation line having an electrical length corresponding to an integral (n) multiple of 180 degrees, a...  
WO/2019/209724A1
An output driver (600) with programmable single-ended and differential outputs includes a first switch (Ml), a first output attenuator, and a programmable attenuator. The first switch (Ml) is coupled in a shunt configuration to a first p...  
WO/2019/205171A1
An embodiment of the present application relates to the technical field of circuits, and provided thereby are a radio frequency receiver, a radio frequency transmitter, and a communication device, which may reduce resources consumed for ...  
WO/2019/206881A1
The amplifier load current cancellation in a current integrator comprises applying an input current (Ιin) to an operational transconductance amplifier provided with an integration capacitor (Cint) for current integration, leading an out...  
WO/2019/207476A1
The invention relates to a system and a method of baseband linearisation (2) for a class G radiofrequency power amplifier (3), said linearisation system (2) comprising a module for selecting the amplifier power supply voltage (11), a dig...  
WO/2019/206550A1
An inverter circuit arrangement that connects an IO-link master with a slave comprises an AB class transistor circuit (Qnc2, Qpc2) of which the currents are replicated by a current mirror (Qpo1, Qno1, Qpo2, Qno2) to a terminal of the sla...  
WO/2019/207098A1
A microwave amplifier having a load network which provides more efficient amplification of a low power microwave frequency signal. The amplifier comprises a transistor and a load network coupled to the transistor output to shape a wavefo...  
WO/2019/202631A1
The present invention relates to a high-frequency power amplifier in which mainly an amplification GaN chip and a GaAs chip on which a pre-match circuit for the amplification GaN chip is formed are connected by wires on the same metal pl...  
WO/2019/200532A1
Radio frequency power amplifier with harmonic control circuit as well as method for manufacturing the same are disclosed. According to an embodiment, a radio frequency power amplifier includes: a planar dielectric substrate (60), a first...  
WO/2019/165317A3
An amplifier having one or more channels where each channel includes a two half bridges (a master and slave sub-channel). The sub-channels can be connected either in parallel or in a full-bridge configuration via internal switches that r...  
WO/2019/192054A1
The present invention relates to a digital predistortion power amplifier calibration method and system and a digital predistortion apparatus. The digital predistortion power amplifier calibration method comprises: acquiring, according to...  
WO/2019/190526A1
An apparatus can include tracking circuitry coupled to a current source and configured to generate a reference voltage signal based on a reference current signal from the current source. The apparatus can include voltage regulator circui...  
WO/2019/186229A1
A method and transmitter for a Doherty power amplifier are provided. According to one aspect, a radio transmitter includes, for each carrier frequency, a filter, a main path and a peak path. The filter suppresses signals outside the sele...  
WO/2019/190669A1
A system and method for pre-distorting a digital signal in a digital communications system. The method includes converting digital bits to be transmitted to a series of symbols defining the bits and providing the symbols to a pulse shapi...  
WO/2019/190543A1
A radio-frequency (RF) amplifier circuit facilites carrier-aggregation (CA) operation in a wireless communication network. A first amplifier subcircuit is coupled to an input node, and a second amplifier subcircuit is coupled to the inpu...  
WO/2019/187262A1
A digital transmitter includes baseband interfaces to generate digital baseband signals with baseband frequencies, digital-upconverting stages to upconvert the baseband frequencies to first radio frequencies having a predetermined freque...  
WO/2019/190515A1
Systems, methods, and circuitries are disclosed to determine parameters for predistortion circuitry in a transceiver including a transmit chain and a receive chain. In one example, a method includes providing a training signal to a power...  
WO/2019/183194A1
A bi-directional amplifier (BDA) comprises a first pair of amplifier transistors and a second pair of amplifier transistors, wherein the first pair of amplifier transistors are cross-coupled with the second pair of amplifier transistors,...  
WO/2019/180520A1
The invention relates to a method for automatically adjusting a multiple-input-port and multiple-output-port tuning unit. The invention also relates to an apparatus for radio communication using this method. An apparatus for radio commun...  
WO/2019/181522A1
This acoustic apparatus (1) comprises a network interface (103), an amplifier (109) that amplifies an audio signal received via the network interface (103), and a transmission unit (150) that receives an output value from the amplifier (...  
WO/2019/179487A1
Disclosed in the present invention are a balanced radio frequency power amplifier, a chip and a communication terminal. The radio frequency power amplifier divides, by means of a 90-degree power splitter unit, a radio frequency input sig...  
WO/2019/180091A1
A transimpedance amplifier (100) for converting a current between its two input terminals (132, 134) to a voltage over its two output terminals (112, 114) comprising a high-speed level shifter (140) configured for creating a difference i...  
WO/2019/179797A1
The invention provides for a magnetic resonance imaging system (100, 300, 500) with a gradient coil system (110, 112, 113) that comprises a set of gradient coils (110) configured for generating a gradient, a gradient coil amplifier (112)...  
WO/2019/174051A1
A method for compensating memory effects in a power amplifier comprises obtaining (S10) of an original signal. A variation of power of the original signal with time is determined (S12). The original signal is predistorted (S14) for memor...  
WO/2019/177806A1
A predictive brownout prevention system may be configured to prevent brownout of an audio output signal. Particularly, the brownout prevention system may be configured to receive information indicative of adaptive estimates of power supp...  
WO/2019/174179A1
A switching-mode power amplifier includes a driver circuit having an input for receiving a radio frequency (RF) signal, an output for outputting a digital output signal, and a bias port for receiving a bias signal, and a bias circuit hav...  
WO/2019/176052A1
This integrated circuit (50) is provided with: an amplifier (1) which amplifies a current signal from an external light receiving element (9) and converts the amplified current signal to a voltage signal; and a low-pass filter (10) which...  
WO/2019/177943A1
Systems and methods for a tunable impedance are provided. A tunable impedance includes a transistor assembly having two terminals and a control input. The transistor assembly includes one or more transistors electrically connected betwee...  
WO/2019/176015A1
This amplifier is configured as follows: a first capacitor (10) resonates at a secondary harmonic frequency included in a signal output from an amplification element (3); and a circuit that includes a second transmission line (6), the fi...  
WO/2019/172168A1
Power consumption is reduced in the present invention by connecting the power supplies of amplifiers for a plurality of channels in cascade to a single power supply voltage. This amplifier circuit 10 comprises a first channel amplifier i...  
WO/2019/173679A1
A balanced amplifier (28) can utilize a common mode choke (31) to suppress even harmonics in the signals of the balanced amplifier (28). The common mode choke (31) can be coupled between cascaded balanced amplifier pairs (34, 35, 36, 37)...  
WO/2019/170234A1
A power amplifier arrangement (100) comprises a splitter network (110), a first amplifier path (120) comprising a first input match network (121) and a first amplifier (122), a second amplifier path (130) comprising a second input match ...  
WO/2019/166465A1
This device (100a) for integrating an electric current (I) received on an integration node (E) comprises: - an operational amplifier (62); - an integration capacitor (64); - a circuit (105a) for modifying an output voltage (V OUT ) of th...  
WO/2019/167353A1
This voltage control oscillator with a high power-supply voltage variation removal ratio and this voltage current conversion circuit of the voltage control oscillator make it possible to have low voltage operations. A cascode-connected t...  
WO/2019/167467A1
A moisture amount detection apparatus (1) is provided with: a light source unit (10) that applies, toward an object (2), light flashing at a predetermined frequency; a light reception device (130) that receives reflection light (R) resul...  
WO/2019/166110A1
System comprising a dual-fed antenna element is designed to present 2×2 port impedances that guarantee high efficiency operation of the main- and auxiliary transistors at peak- and backed off power. The proposed solution eliminates the ...  
WO/2019/167878A1
[Problem] To provide a power amplifier adjustment method and an adjustment system with which it is possible to adjust a linearizer using two waves of equal-power signals, and to make a non-linear influence on a multi-carrier signal small...  
WO/2019/165621A1
An envelope tracking supply modulator (100) for a power amplifier (160) is disclosed. The envelope tracking supply modulator (100) comprises a multilevel push-pull converter (110). The multilevel push-pull converter (110) comprises a con...  
WO/2019/158695A1
The present invention is directed to a RF transmit system (1) for a magnetic resonance examination system where it is intended to provide a solution for the problem of rapidly switching between operation modes of different peak power req...  
WO/2019/157704A1
Disclosed in embodiments of the present application are an output power adjustment method and a related product. The method comprises: starting a power amplifier (PA) self-calibration process of a first transmission channel Tx1 in a firs...  
WO/2019/158495A1
A multi-channel RF transmit system (1) especially for use in a magnetic resonance examination system comprising, a plurality of RF channels (18, 19) wherein each of the RF channels (18, 19) has an RF amplifier. The multi-channel RF trans...  
WO/2019/153290A1
A Doherty power amplifier arrangement comprises a splitter network, a first amplifier path comprising at least a first sub-amplifier and a first output matching network; a second amplifier path comprising at least a second sub-amplifier ...  
WO/2019/155582A1
The present invention comprises: a first current source (IS11) connected to a power line supplied with a first potential; a differential input circuit (TR11, TR12) that is connected between the first current source and a first node, and ...  
WO/2019/155601A1
An amplifier provided with: a circuit pattern providing a plurality of signal paths having different lengths; a plurality of pads electrically connected to the circuit pattern; a plurality of transistor cells; a plurality of transfer lin...  
WO/2019/148484A1
An H-bridge power amplifier arrangement (100) with envelope tracking is disclosed. The power amplifier arrangement (100) comprises four elements (A, B, C, D) form the four corner bars of a first H-bridge structure with a load (103) forme...  
WO/2019/151959A1
In the present invention, a power amplifier system which operates at a narrow band with high power and high efficiency or at a wide band is provided. Said power amplifier system comprises at least one high power amplifier (2); at least o...  

Matches 1 - 50 out of 36,603