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Patent # Description
US-9,438,181 Amplification of signals output from bridge-tied load audio amplifiers
Disclosed boost amplifiers are used with a BTL amplifier that outputs balanced audio signals and that has an output current capacity and a dynamic power...
US-9,438,180 Radio frequency power amplifier and method for increasing power added efficiency and linearity
A radio frequency (RF) power amplifier is disclosed. The RF power amplifier includes an impedance transformation circuit, a current unit gain amplifier, and an...
US-9,438,179 Amplifier apparatus and soft-start method thereof
An amplifier apparatus includes a differential input pair, a current source, and a load. The differential input pair includes first and second transistors, and...
US-9,438,178 Mixer impairment correction based on volterra series
Techniques for compensating for signal impairments introduced by a mixer are discussed. One example system employing such techniques can include mixer...
US-9,438,177 Pre-distortion method and associated apparatus and non-transitory machine readable medium
A pre-distortion method includes: receiving an input data; and obtaining a pre-distorted output by inputting the input data into a pre-distortion function,...
US-9,438,176 Low noise amplifier
Provided is a low noise amplifier. The low noise amplifier includes an input transistor receiving and amplifying a signal, an output transistor amplifying the...
US-9,438,175 Cascode amplifier
In one embodiment, a cascode amplifier includes an amplifier circuit, a replica circuit, a bias circuit, and a feedback circuit. The amplifier circuit includes...
US-9,438,174 Quasi-broadband amplifier according to the Doherty principle
An amplifier comprises a first amplifier circuit, a second amplifier circuit, a hybrid-coupler circuit and a termination. The hybrid-coupler circuit comprises...
US-9,438,173 Multiple-series amplifying device
A multiple-series amplifying device (100) of the present invention includes multiple series of amplifiers (110, 120) which are formed in parallel so as to input...
US-9,438,172 Digital multi-level envelope tracking for wide-bandwidth signals
Digital envelope tracking with multilevel supply voltages is performed for wide-bandwidth signals. A digital control component generates a digital control code...
US-9,438,171 Multiplying current conveyor for amplifier
A circuit having a first transistor being a common gate connected transistor and a second transistor, the second transistor being M times the size of the first...
US-9,438,170 Power amplifier
A power amplifier includes an input circuit configured to receive an input signal. At least two transistors connected in series. A first transistor of the at...
US-9,438,169 Mixer
A frequency shifter configured to shift the frequency of a signal, the frequency shifter comprising: a resonant structure configured to mechanically resonate at...
US-9,438,168 Oscillator
An oscillator includes a resonator configured to resonate an electromagnetic wave in a resonant axis direction and a capacitance unit electrically connected in...
US-9,438,167 Oscillation circuit, oscillator, manufacturing method of oscillator, electronic device, and moving object
An oscillation circuit includes: an oscillation unit which includes a first terminal and a second terminal connected to a resonator, a third terminal, a fourth...
US-9,438,166 Electro-mechanical oscillator and method for generating a signal
An oscillator and method for generating a signal are provided. The oscillator comprises an electro-mechanical resonator and a reconfigurable oscillator driver....
US-9,438,165 RC oscillator
A method includes using a current source to provide a charging current to a capacitor of a resistor-capacitor (RC) tank of an RC oscillator. The method includes...
US-9,438,164 System and method for calibrating capacitor-based oscillators in crystal-less devices
A method for calibrating an oscillator in an electronic device and an electronic device configured for calibration are provided. Multiple signals are sent to...
US-9,438,163 Ultra-low voltage-controlled oscillator with trifilar coupling
The present disclosure relates to a device and method to reduce voltage headroom within a voltage-controlled oscillator by utilizing trifilar coupling or...
US-9,438,162 Solar panel mounting with bias element
A solar panel mounting system may include a solar panel mounting assembly for mounting to a support structure. The solar panel mounting assembly may include a...
US-9,438,161 Bracket for connection of a junction box to photovoltaic panels
A device for attaching a junction box to a photovoltaic. The photovoltaic panel has a photovoltaic side and a non-photovoltaic side. The device includes a...
US-9,438,160 Motor drive apparatus
A motor drive apparatus includes multiple inverter circuits provided corresponding, respectively, to multiple motors, a controller configured to control the...
US-9,438,159 System and method for detecting and controlling a motor
A system including an electric motor and a control software operable to control the operation of a plurality of different types of electric motors. The control...
US-9,438,158 Motor control device controlling synchronous motor
A motor control device includes: a calculating unit for calculating a speed reference value that decreases as a torque command increases; a determining unit for...
US-9,438,157 Method for operating a multiphase electric machine and corresponding multiphase electric machine
In a method for operating a multiphase electrical machine, which includes a rotor and a rotary encoder operatively connected to the rotor, an actual rotational...
US-9,438,156 Motor control device and motor control method
This motor control device generates a voltage command value from a current command value and performs feedback control by means of a detected current flowing...
US-9,438,155 Permanent magnet generator inductance profile identification
Parameters of PM machines, especially for IPM machine, are known to vary by significant amounts. This affects the controllability of such machines, which may...
US-9,438,154 Method and device for controlling a motor vehicle windscreen wiper motor
Method of controlling a motor vehicle windscreen wiper motor, powered and controlled by pulse width modulation (PWM) with duty ratio (T) of determined value, in...
US-9,438,153 Rotary electric machine control device
A rotary electric machine control device that controls a rotary electric machine that includes a rotor in which a permanent magnet is disposed so as to provide...
US-9,438,152 Electronically commutated electric motor comprising rotor position detection with interference field compensation
An electronically commutated electric motor includes a stator and a rotor formed as a permanent magnet. A control unit is connected to the stator and configured...
US-9,438,151 Transverse flux machine and vehicle
A transverse flux machine includes a stator having a circular coil wound in a rotational direction and a rotor arranged to face the first ferromagnet across a...
US-9,438,150 Method of controlling a brushless permanent-magnet motor
A method of controlling a brushless permanent-magnet motor. The method includes commutating a winding of the motor at times relative to zero-crossings of back...
US-9,438,149 Method of controlling a brushless permanent-magnet motor
A method of controlling a brushless permanent-magnet motor. The method includes dividing each half of an electrical cycle of the motor into a conduction period...
US-9,438,148 Motor drive device
The present invention relates to a motor drive device having a drive circuit for driving a power supply relay and a phase relay providing a fail-safe function....
US-9,438,147 Position detecting apparatus and driving system
The position detecting apparatus includes a comparing part that compares the value of the digital signal output from the AD converter and a reference value that...
US-9,438,146 Reducing the power consumption of a brushless motor
A method of controlling a brushless motor. The method includes measuring a temperature of the motor, adjusting a control value in the event that the measured...
US-9,438,145 Magnet temperature estimating system for synchronous electric motor
A magnet temperature estimating system for a synchronous electric motor having a permanent magnet includes: a superimposing unit configured to superimpose a...
US-9,438,144 System and method for fault protection of a motor
An exemplary motor driving system includes a power source, a driving circuit, a controller, a motor, and a protection circuit. The driving circuit including at...
US-9,438,143 Drive control device
A PWM signal generator section for generating a plurality of PWM signals with different phases to be respectively fed to a plurality of loads, and a phase...
US-9,438,142 Motor driving circuit
A main control circuit (11) for driving a motor is configured so as to have: a Pch FET (T11), which is provided in series with a diode (D1), and the source (S)...
US-9,438,141 Braking apparatus for electric power tool
One aspect of an embodiment of the present disclosure is a braking apparatus for an electric power tool that includes a switching circuit with six switching...
US-9,438,140 Member for semiconductor manufacturing apparatus
A member for a semiconductor manufacturing apparatus includes an electrostatic chuck, a cooling unit, a spacer (an O-ring, an outer periphery spacer, or the...
US-9,438,139 Energy harvesting devices for low frequency applications
An energy harvesting device has been developed for low frequency applications. The energy harvesting device is comprised of a buckling member having a...
US-9,438,138 Magnetostrictive devices and systems
The device generates electrical energy from mechanical motion. The device includes at least one magnetostrictive element and at least one force modifier. The...
US-9,438,137 Method and device for operating a piezoelectric actuator
A method for operating a piezoelectric actuator which may be activated with the aid of an activation signal. The piezoelectric actuator is operable in a passive...
US-9,438,136 Converter for electric power
The present invention relates to a converter for electric power having multiple sub-modules connected in series, the sub-modules having an energy storage unit...
US-9,438,135 Electric power converter including a stabilization circuit
An electric power converter includes a DC stabilization circuit configured to stabilize a DC voltage from DC power supply, and an inverter configured to convert...
US-9,438,134 System and method for off-line ups
A method of operating an uninterruptible power supply (UPS) includes generating, during a portion of an output cycle, a substantially sinusoidal output voltage...
US-9,438,133 Alternating current-to-direct current circuit
An AC to DC circuit includes a rectifier circuit, a voltage detecting circuit, the current source and the output circuit. The rectifier circuit converts the AC...
US-9,438,132 Multilevel AC/DC power converting method and converter device thereof
A multilevel AC/DC power converter device includes a high-frequency power converter including a first AC port and a low-frequency power converter including a...
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