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Amplifier Circuit patents


This page is updated frequently with new Amplifier Circuit-related patent applications.

Date/App# patent app List of recent Amplifier Circuit-related patents
 Amplifier and related method patent thumbnailAmplifier and related method
An amplifier applicable to an intra-band non-contiguous carrier aggregation (ncca) band includes a first amplifier circuit and a second amplifier circuit. The ncca band includes at least a primary component carrier (pcc) channel and a secondary component carrier (scc) channel not adjacent to each other.
Mediatek Inc.

 Amplifier circuit and method patent thumbnailAmplifier circuit and method
An amplifier arrangement comprises n amplifier stages (101 to 10n), wherein n is an integer equal or greater than four. The amplifier arrangement comprises a cascade of quarter wavelength transmission lines coupled between an output of an amplifier of a first amplifier stage (101) and an output node (15) of the amplifier arrangement, wherein the cascade comprises n-1 quarter wavelength transmission lines (111 to 11n-1).
Telefonaktiebolaget L M Ericsson (publ)

 Bias circuit for use with amplifier circuit, control method thereof, and signal amplifier patent thumbnailBias circuit for use with amplifier circuit, control method thereof, and signal amplifier
A bias circuit comprises: a first circuit that comprises a first resistor and a decoupling capacitor; a bias voltage generation circuit that comprises a first transistor being connected to the first circuit; one or more switches; a first replica circuit comprising a second circuit and a second transistor, the second circuit comprising a second resistor and a capacitor, the second transistor being connected to the second circuit; a second replica circuit comprising a third transistor; a comparator that makes a comparison between a pseudo-bias voltage and a reference voltage; and a control circuit that controls the one or more switches on the basis of the comparison result to reduce the amount of the current flowing through the first transistor.. .
Panasonic Intellectual Property Management Co., Ltd.

 Solid-state imaging device, imaging device, and signal reading method patent thumbnailSolid-state imaging device, imaging device, and signal reading method
This solid-state imaging device includes a first substrate and a second substrate which have circuit elements constituting pixels disposed therein are electrically connected to each other. The pixels includes: a photoelectric conversion element disposed in the first substrate; an amplifier circuit that amplifies a signal generated in the photoelectric conversion element to output the amplified signal; a signal accumulation circuit which is disposed in the second substrate and accumulates the amplified signal which is output from the amplifier circuit; and an output circuit that outputs the amplified signal accumulated in the signal accumulation circuit from the pixel..
Olympus Corporation

 Bias-boosting circuit with dual current mirrors for rf power amplifier patent thumbnailBias-boosting circuit with dual current mirrors for rf power amplifier
An rf power amplifier circuit has a signal input and a signal output. An input matching network connected to the signal input, and an output matching network is connected to the signal output.
Morfis Semiconductor, Inc.

 Cable signal detector patent thumbnailCable signal detector
A cable signal detector for being provided at a connector at an end of a communication cable transmitting differential signals or at a relay connector to be connected to the connector to detect an existence of information communication. The cable signal detector includes an amplifier circuit that branches and extracts a portion of a signal transmitted through the communication cable, amplifies the extracted signal and outputs the amplified signal, and a display portion that display the existence of information communication based on the output of the amplifier circuit.
Hitachi Metals, Ltd.

 Wake up system for electronic device patent thumbnailWake up system for electronic device
A wake up system for electronic device includes a detecting circuit, an amplifier circuit, a switch circuit, and a south bridge chip. The detecting circuit detects an ambient temperature change as a result of the physical proximity of a user, converts the temperature change to a weak voltage signal, and amplifies the voltage signal for the first time.
Hon Hai Precision Industry Co., Ltd.

 Amplifier circuit and method patent thumbnailAmplifier circuit and method
An amplifier circuit comprises a first amplifier configured to amplify a first input signal. The output of the first amplifier is coupled to an output node via a first transmission line, the first transmission line comprising a first portion having a first characteristic impedance and a first length, and a second portion having a second characteristic impedance and a second length.
Telefonaktiebolaget L M Ericsson (publ)

 Predistortion in radio frequency transmitter patent thumbnailPredistortion in radio frequency transmitter
A power amplifier circuit includes an amplifier mosfet and a predistorter mosfet. The predistorter mosfet source and drain are connected together, and the predistorter mosfet is connected between the gate of the amplifier mosfet and a second bias voltage signal.
Skyworks Solutions, Inc.

 Semiconductor device and  manufacturing the same patent thumbnailSemiconductor device and manufacturing the same
A solid-state image sensing element including a transistor with stable electrical characteristics (e.g., significantly low off-state current) is provided. Two different element layers (an element layer including an oxide semiconductor layer and an element layer including a photodiode) are stacked over a semiconductor substrate provided with a driver circuit such as an amplifier circuit, so that the area occupied by a photodiode is secured.
Semiconductor Energy Laboratory Co., Ltd.


Methods of operating sense amplifier circuits

A method of maintaining a voltage level of a bit line of a sense amplifier circuit includes providing a power supply voltage at a power supply node, receiving the power supply voltage from the power supply node with an nmos transistor, and maintaining a voltage level of the bit line by supplying sufficient current with the nmos transistor to compensate a leakage current of the bit line. The method includes receiving the voltage level of the bit line with a noise threshold control circuit, inverting the voltage level with the noise threshold control circuit, and driving a sense amplifier output with the noise threshold control circuit..
Taiwan Semiconductor Manufacturing Company, Ltd.


T-shaped power amplifier cooling plate

Cooled electronic circuitry may include multiple and substantially parallel circuitry surfaces, each containing power amplifier circuitry, having a side edge, and includes material between at least a portion of the base plate and the side edge that provides a level of thermal conductivity of at least 167 w/m-k; and a cooling plate having a flat surface attached to each of the side edges of the circuitry surfaces in a thermally-conductive manner.. .


Buried service detection

Some embodiments of the invention relate to a mobile detection device embodied as a bucket of an earth moving machine for an evaluation of a distance value and/or proximity from the bucket to an occluded ac-current carrying structure according to the magnetic field emanated from the structures ac-current. There is at least one detection coil, comprising at least one winding of an electrically conductive material, which is connected to a first amplification stage, with an amplifier circuit embodied as a current sensing amplifier, which are both are sealed within a common enclosure that is located at the bucket.


Mass analyser and mass analysis

An electrostatic ion trap for mass analysis includes a first array of electrodes and a second array of electrodes, spaced from the first array of electrode. The first and second arrays of electrodes may be planar arrays formed by parallel strip electrodes or by concentric, circular or part-circular electrically conductive rings.


Semiconductor device, circuit board, and electronic device

A semiconductor device with low power consumption or a semiconductor device with a reduced area is provided. The semiconductor device includes a cell array including a first memory cell and a second memory cell; and a sense amplifier circuit including a first sense amplifier and a second sense amplifier.


Implantable cardio defibrillator (icd), subcutaneous implantable cardio defibrillator (sicd), and waveform energy control systems

Cardiac defibrillation or cardioversion waveform energy control systems employ transvenous icds or subcutaneous sicds for treating cardiac arrhythmias. The systems comprise differentially driven amplifier circuit operational modes to control the delivery of defibrillation or cardioversion electrical shocks, wherein the shock waveforms are constant current, constant voltage, or constant energy.


Analog-digital conversion controlling the same

An analog-digital conversion system includes an analog-digital converter; and a preamplifier circuit which is provided in the previous stage of the analog-digital converter and differentially amplifies an input analog signal. In the preamplifier circuit, an offset voltage and/or a noise occurs and/or is mixed.
Spansion Llc


Fixed gain amplifier circuit

An instrumentation amplifier includes first and second resistors for gain setting. The operational amplifiers within the instrumentation amplifier include selectively enabled current drive sources coupled to the amplifier output.
Stmicroelectronics, Inc.


Wide range transimpedance amplifier

One aspect of this disclosure is a transimpedance amplifier circuit with multiple resistive feedback loops can be implemented with multiple kelvin sensing channels. A transimpedance amplifier and multiple kelvin sensing channels can be implemented on a single die having multiple contacts, such as pins, for connecting multiple resistors to the kelvin sensing channels.
Analog Devices, Inc.


Voltage regulator

Provided is a voltage regulator in which an output current can be controlled stably and accurately to an overcurrent protection set value without the need of providing a phase compensation circuit including an element having a large area. The voltage regulator includes a constant voltage control circuit including: a first differential amplifier circuit for comparing a first reference voltage and a feedback voltage to each other; and an output transistor to be controlled by an output voltage of the first differential amplifier circuit, and an overcurrent protective circuit including: a resistor for measuring the output current; a second differential amplifier circuit for measuring a difference between voltages at both terminals of the resistor; a comparator for comparing an output voltage of the second differential amplifier circuit and a second reference voltage to each other; and a switch to be controlled by a detection signal of the comparator.
Seiko Instruments Inc.


Image sensor with hybrid heterostructure

An image sensor architecture provides an snr in excess of 100 db, without requiring the use of a mechanical shutter. The circuit components for an active pixel sensor array are separated and arranged vertically in at least two different layers in a hybrid chip structure.


Memory device with differential bit cells

In some examples, a memory device may be configured to utilize differential bit cells formed from two or more tunnel junctions. In some cases, the tunnel junctions forming the differential bit cell may be arranged to utilize shared read circuitry to reduce device mismatch.
Everspin Technologies, Inc.


Circuit arrangement for suppressing common-mode interference signals during the measurement of bioelectric signals

A differential voltage measuring system includes two electrodes that are connected to a patient at an input and make available a respective measurement contact at an output. A shunt resistor is connected in series with the second electrode.


Insulated gate bipolar transistor amplifier circuit

The present invention provides a lateral igbt transistor comprising a bipolar transistor and an ig-fet. The lateral igbt comprises a low resistive connection between the drain of the igfet and the base of the bipolar transistor, and an isolating layer arranged between the ig-fet and the bipolar transistor.
K.eklund Innovation


Image sensor with hybrid heterostructure

An image sensor architecture provides an snr in excess of 100 db, without requiring the use of a mechanical shutter. The circuit components for an active pixel sensor array are separated and arranged vertically in at least two different layers in a hybrid chip structure.


Memory device with shared amplifier circuitry

In some examples, a memory device may have at least a first and a second memory array. In some cases, a portion of the bit cells of the first memory array may be coupled to first pmos-follower circuitry and to second pmos-follower circuitry.
Everspin Technologies, Inc.


Soft start circuit and dc-dc voltage regulator

A voltage regulator is provided comprising: a pass transistor that includes a first node coupled to receive an input voltage and a second node coupled to provide a regulated voltage and a control node; an amplifier circuit coupled to produce a control voltage on a control line that is coupled to control a voltage at the control node of the pass transistor, based at least in part upon a reference voltage and the regulated voltage; a switch configured to transition between a first switch state in which the switch couples the control line to a turn-off voltage having a value to turn off the pass transistor and a second switch state in which the switch decouples the control line from the turn-off voltage; and a switch control circuit configured to maintain the switch in the first switch state during a first time interval while the input voltage ramps up and to transition the switch to the second switch state after the first time interval.. .
Analog Devices, Inc.


Memory device with dynamically operated reference circuits

This invention concerns a semiconductor memory device comprising: at least one sense amplifier circuit for reading data sensed from selected memory cells in a memory array, at least one reference circuit, each reference circuit being a replica of the sense amplifier circuit and having an output through which the reference circuit delivers an output physical quantity, a regulation network providing a regulation signal to each sense amplifier circuit and each reference circuit, wherein the regulation signal is derived from an averaging of the output physical quantity over time and/or space, wherein the regulation network comprises a control unit configured to sum up the physical quantities of each output of the reference circuit and a target mean value, the control unit delivering a regulation signal based on the sum, the regulation signal being fed in to each regular sense amplifier circuit and to each reference circuit.. .


Ultrasonic probe ultrasonic imaging apparatus and controlling ultrasonic imaging apparatus

An ultrasonic probe includes a transducer circuit configured to receive ultrasonic waves reflected from an object and output an ultrasonic signal based on the ultrasonic waves; a simulated circuit having circuit characteristics substantially the same as the transducer circuit and configured to output a noise signal; and a differential amplifier circuit configured to output a voltage difference between the ultrasonic signal and the noise signal.. .
Samsung Electronics Co., Ltd.


Apparatus and methods for power amplifiers

Apparatus and methods for power amplifiers are disclosed. In one embodiment, a power amplifier circuit assembly includes a power amplifier and an impedance matching network.
Skyworks Solutions, Inc.


Multiple frequency rf amplifier, mass spectrometer including the same, and mass spectrometry mass spectrometer

Provided is a multiple frequency radio frequency (rf) amplifier. The multiple frequency rf amplifier includes a waveform generation circuit configured to generate an rf signal by amplitude and frequency-modulating a reference waveform signal, a drive amplifier circuit configured to drive-amplify the rf signal, and a power amplifier circuit configured to generate a multiple frequency rf voltage signal through a power amplification of the drive-amplified rf signal and output the multiple frequency rf voltage signal to an ion trap for a mass spectrometry..
Korea Basic Science Institute


Low voltage feedforward current assist ethernet line driver

Described examples include ethernet physical layer (phy) interface integrated circuits with transmit interface circuitry for transmitting data to an ethernet network through a magnetic interface, which includes a voltage mode first amplifier with an output that generates a first voltage signal from a supply voltage according to a data input signal. The transmit interface circuit also includes a feedforward second amplifier circuit with an output stage that operates in a first mode to generate a current signal from the supply voltage according to the first voltage signal and to provide the current signal to the first amplifier output to boost a peak voltage at the output above the supply voltage to facilitate support for higher peak signal voltage swings for 10base-t applications while using 2.5 volt or other low voltage supply levels..
Texas Instruments Incorporated


Apparatus comprising a differential amplifier circuit and an extraction circuit

An apparatus with two pairs of lines including a first and second channel further includes a phantom channel that is implemented to provide a third channel without physically installing lines. Based on a differential signal, a first common-mode signal level is generated at a first output of a differential amplifier circuit, and a second common-mode signal level on a second output, and the first common-mode signal level is applied to the lines of the first pair of lines and the second common-mode signal level to the lines of the second pair of lines.
Fraunhofer-gesellschaft Zur Foerderung Der Angewandten Forschung E.v.


Systems and methods for performing power amplifier bias calibration

Wireless communications circuitry in an electronic device may include power amplifier circuitry that is powered using a bias voltage supplied by adjustable power supply circuitry. The power supply circuitry may include envelope tracking circuitry that continuously adjusts the bias voltage.
Apple Inc.


Detecting device and electronic apparatus

A detecting device includes a pyroelectric element that generates charge by a pyroelectric effect in a first detection terminal and a second detection terminal, a chopper amplifier circuit that generates an amplified signal in response to the charge generated in the first detection terminal and the second detection terminal by chopping, and an initialization switch that controls electrical connection between the second detection terminal and a power source for generating an initialized voltage, and the initialization switch is turned on before a start of an amplification operation by the amplifier circuit and is off during the amplification operation.. .
Seiko Epson Corporation


Semiconductor integrated circuit device

An output signal characteristic of a differential amplifier circuit is improved. When an input data signal becomes ‘low’, current flowing through a first transistor will decrease and potential at a connection (a node) between a first resistor and a second resistor will increase.
Renesas Electronics Corporation


Impedance bootstrap circuit for an interface of a monitoring device

An interface for receiving electrical signals representative of a condition of a patient and for conveying representations of the electrical signals to a processing system. The interface includes at least one amplifier circuit configured to alter an amplitude of the electrical signal, a common-mode cancellation amplifier circuit coupled to the at least one amplifier circuit and configured to reduce common-mode signal noise in the electrical signals, and a bootstrap circuit coupled to the at least one amplifier circuit and configured to increase an effective input impedance at an input of the at least one amplifier circuit..
Stryker Corporation


Integrated circuit device with programmable analog subsystem

An integrated circuit (ic) device can include a plurality of analog blocks, including at least one fixed function analog circuit, and at least one reconfigurable analog circuit block selected from: a continuous time (ct) block comprising a plurality of reconfigurable amplifier circuits and a discrete time block comprising amplifiers with a reconfigurable switch network; an analog multiplexer (mux) configured to selectively connect any of a plurality of input/outputs (i/os) of the ic device to the analog blocks, the analog mux including at least one low noise signal path pair having a lower resistance than other signal paths of the analog mux; at least one analog routing block reconfigurable to provide signal paths between any of the analog blocks; a digital section comprising digital circuits; and a processor interface coupled to the analog blocks.. .
Cypress Semiconductor Corporation


Class d amplifier circuit

This application relates to class d amplifier circuits (200). A modulator (201) controls a class d output stage (202) based on a modulator input signal (dm) to generate an output signal (vout) which is representative of an input signal (din).
Cirrus Logic International Semiconductor Ltd.


Method and gain enhancement of differential amplifier

A differential amplifier circuit and method having a feed-in network coupling an input signal to an intermediate signal. An amplifier amplifies the intermediate signal by a gain factor to output an output signal to a load network.
Realtek Semiconductor Corp.


Low noise amplifier method and apparatus

A low noise amplifier circuit including: at least a first input and first output; at least a first stage of transistor amplification having a transistor input terminal; the circuit further comprising: an input driving circuit interconnecting the first input to the transistor input terminal, the input driving circuit including a parallel resonant circuit interconnected between the transistor input terminal and ground and a series resonant circuit interconnected between the input terminal and the transistor input terminal, the input driving circuit functioning as an input matching network for the circuit in conjunction with an input bias and decoupling network.. .
Commonwealth Scientific And Industrial Research Organisation


Circuit for reducing pop noise

The invention concerns an amplifier circuit comprising: an amplifier having a first input coupled to an input node of the amplifier circuit via a first resistor and an output coupled to a load via a coupling capacitor, the output being coupled to the first input via a second resistor; and a current ramp generator adapted to supply a current ramp to the first input of the amplifier during a power up phase or power down phase of the amplifier circuit to control the rate of charge or discharge of the coupling capacitor.. .


High-frequency amplifier circuit

A high-frequency amplifier circuit comprising a first and a second amplification units connected in cascade structure and so on. The first amplification unit includes an fet of a first conductivity type having a source terminal supplied with a first potential, and a first inductor connected to an intermediate potential line, and the second amplification unit includes an fet of a second conductivity type having a source terminal supplied with a second potential, and a second inductor connected to the intermediate potential line.
Lapis Semiconductor Co., Ltd.


Asymmetric h-bridge in a class d power amplifier

Disclosed is an amplifier circuit having an output stage that includes an h-bridge circuit. The h-bridge circuit includes sense resistors on one side of the circuit.
Qualcomm Incorporated


Gamma ray detector and detecting gamma rays

In various embodiments, a gamma ray detector is provided. The gamma ray detector may include a converter element, configured to release an electron when a gamma ray moves at least partially through the converter element.
Infineon Technologies Ag


Stacked bias i-v regulation

A rf amplifier circuit including a plurality of fet devices, where a source terminal of an fet device is electrically coupled to the drain terminal of another fet device. The circuit further includes a voltage divider network and a plurality of operational amplifiers, where a separate one of the operational amplifiers is provided for each fet device.
Northrop Grumman Systems Corporation


Radio-frequency amplifier circuit and control voltage setting radio-frequency amplifier circuit

A radio-frequency amplifier circuit includes first and second fets cascode-connected to each other. The gate of the first fet is connected to a radio-frequency input terminal, and the drain of the second fet is connected to a radio-frequency output terminal.
Murata Manufacturing Co., Ltd.


Optical differential solar tracking system

A system and method of using differential optical signals to track the orientation of a solar surface or surfaces is proposed. Two dispersive prisms or gratings arranged in a mirror-symmetric fashion are used to decompose light into its constituent colors, and the gain of a differential amplifier circuit based on the difference of the frequencies of single color collimated light produced by the two prisms or gratings is used to maintain the on-sun orientation of the solar surface or surfaces.
Qbotix, Inc.


Communication visualization system

A communication visualization system includes a wireless power-feeding device for transmitting electromagnetic energy in a wireless manner and a communication visualization device for notifying that a lan cable connected to an information communication apparatus is performing information communication. The communication visualization device includes an antenna part for receiving the electromagnetic energy transmitted from the wireless power-feeding device, a rectifier circuit for rectifying the electromagnetic energy received by the antenna part to generate a dc voltage, an amplifier circuit for amplifying a communication signal transferred to the communication cable at the time of information communication by using the dc voltage generated by the rectifier circuit as operation power, a rectifier circuit for converting the amplified communication signal into a dc voltage, and a light-emitting circuit for emitting light when the dc voltage after conversion is supplied..
Hitachi Metals, Ltd.


Systems and methods for communicating into a shielded environment

A system and method for wirelessly communicating into a shielded area are described. In one particular example, a bi-directional amplifier that allows two-way communication into a tunnel is mounted at a tunnel portal and thereby allows rf signals to be exchanged therefrom using a single switched pathway.
Tunnel Radio Of America, Inc.


Voltage mode power combiner for radio frequency linear power amplifier

A radio frequency (rf) power combining amplifier circuit has a circuit input and a circuit output. A first amplifier is connected to the circuit input and to a first bias input.
Rfaxis, Inc.


Semiconductor amplifier circuit

According to one embodiment, a semiconductor amplifier circuit includes: a first amplifier circuit including first and second p-type transistors; a second amplifier circuit including first and second n-type transistors; and first to seventh current mirror circuits. The first and second current mirror circuits are connected to drains of the first and second p-type transistors.
Kabushiki Kaisha Toshiba


Unit array of a memory device, memory device, and memory system including the same

A memory device includes a memory array including a plurality of sections, each including a plurality of memory cells and at least one reference cell. The memory device may also include a plurality of sense amplifier circuits respectively corresponding to the plurality of sections, and a plurality of switch circuits, each switch circuit connected between a respective section and sense amplifier circuit.


Communication visualization device

A communication visualization device includes a transformer for converting a magnetic field caused from a lan cable connected to an information communication apparatus into electric energy at time of information communication, an amplifier circuit for amplifying the electric energy output from the transformer, a rectifier circuit for converting an amplified signal amplified by the amplifier circuit into a dc voltage, and a light-emitting circuit for emitting light when the dc voltage obtained by conversion of the rectifier circuit is supplied thereto.. .
Hitachi Metals, Ltd.


Supplying-end module for induction-type power supply system and signal analysis circuit therein

A signal analysis circuit for a supplying-end module includes a first voltage divider circuit, for attenuating a coil signal of a supplying-end coil; a first amplifier circuit, for obtaining parts of the attenuated coil signal higher than a reference voltage to output a half-wave signal; a first envelope detector, for performing envelope extraction on the half-wave signal to obtain a dc signal; a second voltage divider circuit, for attenuating the half-wave signal; a second amplifier circuit, for obtaining parts of the attenuated half-wave signal higher than the dc signal to output an amplified half-wave signal; a second envelope detector, for performing envelope extraction on the amplified half-wave signal to generate an envelope signal; a coupling capacitor, for filtering out the dc component of the envelope signal; a third voltage divider circuit, for combining the ac component of the envelope signal with a dc voltage to retrieve a trigger signal.. .
Fu Da Tong Technology Co., Ltd.


Image sensor and driving method thereof

With an image sensor in which the amplifier circuit is disposed at each pixel, there is such an issue that the threshold voltage of the transistor fluctuates so that the signal voltage fluctuates because a voltage is continuously applied between the source and the gate of the transistor at all times when using the amorphous thin film semiconductor as the transistor that constitutes an amplifier circuit. The gate-source potential of the tft that constitutes the amplifier circuit is controlled so that the gate terminal voltage becomes smaller than the source terminal voltage in an integrating period where the pixels accumulate the signals, and controlled so that the gate terminal voltage becomes larger than the source terminal voltage in a readout period where the pixels output the signals..
Nlt Technologies, Ltd.


Solid-state imaging device and driving solid-state imaging device

A solid-state imaging device includes a plurality of pixels each of which has a photoelectric conversion element and a pixel output portion and which are arranged in a column direction, a first wiring connected to the pixel output portions of the plurality of pixels, a differential amplifier circuit whose one input terminal is connected to the first wiring, a second wiring connected to the other input terminal of the differential amplifier circuit, a third wiring which is formed so as to extend in the column direction and is connected to a first pad, a plurality of switches connected between the second and third wirings, and a control unit for driving the switch at a position corresponding to the position of the pixel in which the pixel output portion is driven in association with the driving of the pixel output portion.. .
Canon Kabushiki Kaisha


Amplifier circuit, cmos inverter amplifier circuit, comparator circuit, delta-sigma analog-to-digital converter, and semiconductor device

An amplifier circuit includes a first mos transistor whose source is connected to a first power source and which amplifies a signal that is input to a gate and outputs the amplified signal from a drain, a second mos transistor whose source is connected to the first power source, and a back gate voltage control element that controls the voltage a back gate of the second mos transistor so that the voltage associated with the drain of the second mos transistor and the voltage of the gate of the second mos transistor are equal to each other, and which applies the controlled voltage to the back gate of the first mos transistor.. .
Semiconductor Technology Academic Research Center


Circuits and devices related to fast turn-on of radio-frequency amplifiers

Circuits, methods and devices are disclosed, related to fast turn-on of radio-frequency (rf) amplifiers. In some embodiments, an rf amplifier circuit includes an amplification path implemented to amplify an rf signal, where the amplification path includes a switch and an amplifier.
Skyworks Solutions, Inc.


Amplifier circuitry for envelope modulators, envelope modulators incorporating said amplifier circuitry and modulating a signal envelope

Amplifier circuitry for an envelope modulator comprising: a plurality of amplifiers for driving a load, each amplifier receiving an input representing an envelope of a signal to be amplified, and one or more charge storage devices coupled to one or more of said plurality of amplifiers. The plurality of amplifiers and charge storage device(s) receive a supply voltage v+ and the charge storage device(s) are charged to the supply voltage v+ initially.
Kabushiki Kaisha Toshiba


Compound sensor

The present invention provides a technology capable of suppressing a fault which has occurred in a certain detection element from affecting other detection units in which no fault has occurred in a compound sensor. The compound sensor includes: a plurality of detection units made up of c/v conversion circuits 321a and 321b, amplifier circuits 322a and 322b, adcs 323a and 323b, diagnosis voltage outputting dacs 327a and 327b, carrier signal generating dacs 328a and 328b and substrate voltage generating dacs 329a and 329b which are signal detection circuits provided for each of a plurality of detection elements; a power source voltage input unit 331 and a gnd voltage input unit 332 shared among each of the plurality of detection units; and overcurrent switch circuits 101a and 101b which are fault detection circuits provided for each of the plurality of detection units for detecting a fault of each detection element and stopping power supply to the detection unit in which the fault has occurred..
Hitachi Automotive Systems, Ltd.


Radio frequency tranceiver front-end device

In an rf transceiver front-end device that operates in a receiving mode, a first transformer circuit generates, based on an external rf signal received by an antenna, a first induction signal that passes through a switch unit, and that is amplified by a low noise amplifier circuit and then demodulated by a demodulation circuit to thereby generate a reception signal. When the rf transceiver front-end device is in a transmitting mode, a power amplifier circuit generates, based on a modulated signal generated by a modulation circuit through modulation of an external transmission signal, an amplified output.
National Taiwan University


Radio-frequency module

To provide a multiband-support radio-frequency module in which the occurrence of a harmonic signal in an amplifier circuit is suppressed and the output of a radio-frequency signal containing unwanted harmonic components is prevented. A first signal path sl1 and a second signal path sl2 are provided such that they intersect each other at least once in a multilayer substrate 2, as viewed from above.
Murata Manufacturing Co., Ltd.


Multistage amplifier circuit with improved settling time

Described examples include multistage amplifier circuits having first and second forward circuits, a comparator or sensor circuit coupled to sense a signal in the second forward circuit to identify nonlinear operation or slewing conditions in the multistage amplifier circuit, and one or more sample hold circuits operative according to a sensor circuit output signal to selectively maintain the amplitude of an amplifier input signal in the second forward circuit and/or in a feedback circuit in response to the sensor circuit output signal indicating nonlinear operation or slewing conditions in the multistage amplifier circuit. Certain examples further include a clamping circuit operative to selectively maintain a voltage at a terminal of a miller compensation capacitance responsive to the comparator output signal indicating nonlinear operation or slewing conditions..
Texas Instruments Incorporated


Distributed power amplifier circuit

A distributed power amplifier circuit is disclosed. The distributed power amplifier circuit comprises an amplifier arrangement comprising a plurality of sub amplifiers, each having an output port for outputting an output signal of the sub-amplifier and an output combiner network for combining the output signals from the sub amplifiers.
Telefonaktiebolaget L M Ericsson (publ)


Slew rate control boost circuits and methods

The present disclosure amplifier circuits and methods having boosted slew rates. In one embodiment, an amplifier circuit comprises an output stage comprising a first output transistor, the first output transistor comprising a gate, a source, and a drain, wherein the gate receives a signal to be amplified.
Qualcomm Incorporated


Semiconductor devices and semiconductor systems including the same

The semiconductor memory device includes a power control signal generator and a sense amplifier circuit. The power control signal generator generates a first power control signal that is enabled in response to a temperature latch signal generated in response to latching a temperature signal in a predetermined mode.
Sk Hynix Inc.


Power converter and regulating line transient response of the power converter

A power converter includes an input and an output with an energy storage circuit and a power switching circuit coupled between the input and the output. A feedback circuit generates a feedback voltage which is differentially compared to a reference in an error amplifier circuit to generate an error amplification signal.
Stmicroelectronics (shenzhen) R&d Co. Ltd


Magnetic sensor device

To provide a magnetic sensor device which maintains accuracy thereof while reducing current consumption by switching drive power of a hall element to two drive power. A magnetic sensor device is equipped with a driving circuit which supplies power to a sensor element, a switch changeover circuit which restricts the supply of the power from the driving circuit to the sensor element, a differential amplifier circuit which performs arithmetic processing on an output signal of the sensor element, a threshold voltage generating circuit which generates a threshold voltage used in magnetism determination, a comparison circuit which compares and determines a voltage of the differential amplifier circuit and the threshold voltage, and a logic circuit which according to the output of the comparison circuit, switches the power outputted from the driving circuit, switches the threshold voltage and controls on/off of the switch changeover circuit in a constant cycle..
Seiko Instruments Inc.


High frequency phase reference standard signal

A pre-characterised high frequency signal (14) is provided by means of a non-linear circuit, for example an amplifier circuit (10), fed with a first signal (12) with a component at a first, fundamental, frequency (fo). The amplifier circuit generates an output signal comprising harmonic components (14h1, 14h2, 14h3) having stable and predetermined phase relation relative to each other.
Focusmw Ip. Inc


Dual reader structure

Implementations described and claimed herein provide a stacked dual reader with a bottom sensor stack and a top sensor stack separated by a top mid-shield and a bottom mid-shield, and a pre-amplifier circuit comprising a top lead connected to the top mid-shield, configured to collect current flowing from the top mid-shield through the top sensor stack opposite a direction of current flowing from the bottom mid-shield to a bottom lead through the bottom sensor stack.. .
Seagate Technology Llc


Antenna having flexible feed structure with components

Electronic devices may include antenna structures. The antenna structures may form an antenna having first and second feeds at different locations.
Apple Inc.


Excitation signal generator for resolver

A resolver excitation signal generator includes a source configured to generate a sinusoidal input signal and an inverting amplifier circuit. The inverting amplifier circuit has an input connected to the source to receive the sinusoidal input signal and an output lacking a transistor stage.
Lear Corporation


Amplifier circuit, antenna module, and radio communication device

An amplifier circuit performs an amplification of a carrier signal received by a transmitting and receiving unit. The amplifier circuit includes an impedance matching circuit that performs matching of an impedance of the amplifier circuit when the transmitting and receiving unit and the amplifier circuit are connected.
Ricoh Company, Ltd.


Gate driving circuit

A temperature detection circuit for detecting a temperature of a switching element, a current source for causing a forward current to flow to the temperature detection circuit, an amplifier circuit for amplifying a forward voltage of the temperature detection circuit, a current adjustment circuit for adjusting a magnitude of a gate current to the switching element on the basis of an output voltage of the amplifier circuit, and a drive circuit for receiving an external signal and turning on/off the switching element, are included. The magnitude of the gate current caused to flow from the current adjustment circuit to the gate electrode of the switching element is adjusted on the basis of a change in a magnitude of the forward voltage corresponding to a change in the temperature of the temperature detection circuit..
Mitsubishi Electric Corporation


Fixed gain amplifier circuit

An instrumentation amplifier includes first and second resistors for gain setting. The operational amplifiers within the instrumentation amplifier include selectively enabled current drive sources coupled to the amplifier output.
Stmicroelectronics, Inc.


Signal processing circuit, resolver digital converter, and multipath nested mirror amplifier

A signal processing circuit includes a chopper amplifier that has a differential amplifier circuit that amplifies differential input signals vsp(t) and vsm(t), and an adder circuit that generates an addition signal vfil(t) by addition of the chopper output signal vsub(t) that the chopper amplifier generates. Differential signals inputted into the differential amplifier circuit are interchanged for every first phase period and second phase period, and the adder circuit generates the addition signal by addition of the chopper output signal in the first phase period and in the second phase period..
Renesas Electronics Corporation


Vehicle mounted antenna device

A vehicle mounted antenna device installed on a vehicle includes a circuit board, a main element portion, and an auxiliary element portion. The main element portion, which has a substantially planar shape, is disposed on substantially the same plane as the circuit board, functions also as a capacitive antenna designed for a first frequency band, and includes a bent pattern having an antenna capacity substantially equivalent to a solid pattern.
Harada Industry Co., Ltd.


Operational amplifying circuit and liquid crystal panel drive device using the same

An operational amplifier circuit includes: a first differential amplifier section containing a p-type differential pair of p-type transistors; a second differential amplifier section containing an n-type differential pair of n-type transistors; an intermediate stage connected with outputs of the first and second differential amplifier sections and containing a first current mirror circuit of p-type transistors, and a second current mirror circuit of n-type transistors; and an output stage configured to amplify an output of the intermediate stage in power. The first differential amplifier section includes a first current source and a first capacitance between sources of the p-type transistors of the p-type differential pair and a positive side power supply voltage.
Renesas Electronics Corporation

Amplifier Circuit topics: Amplifier Circuit, Semiconductor, Differential Amplifier Circuit, Differential Amplifier, Memory Cells, Semiconductor Device, Memory Cell, Semiconductor Substrate, Photodiode, Signal Processing, Memory Effect, Electronic Device, Electrical Signal, Storage Device, Communications

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