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ACOUSTIC WAVE FILTER, DUPLEXER, AND MODULE
An acoustic wave filter includes: series resonators connected in series; and one or more parallel resonators connected in parallel, wherein at least two series...
RF ATTENUATOR DEVICE AND SYSTEM
A device includes a thermally conductive and electrically insulative substrate having a first major surface and a second major surface. A coupling structure is...
A filter chip includes a substrate, a plurality of external terminals formed on the substrate for external connection, and a plurality of passive element...
POWER AMPLIFICATION MODULE
Provided is a power amplification module that includes: an amplification transistor that has a constant power supply voltage supplied to a collector thereof, a...
POWER AMPLIFICATION MODULE
A power amplification module includes: a first bipolar transistor in which a radio frequency signal is input to a base and an amplified signal is output from a...
GATED CDS INTEGRATOR
A Gated CDS Integrator (GCI) may amplify low-level signals without introducing excessive offset and noise. The GCI may also amplify the low level signals with...
CLASS-D AMPLIFIER CIRCUITS
Methods and apparatus for Class-D amplifier circuits with improved power efficiency. The circuit has an output stage with at least first and second switches...
DIFFERENTIAL CLASS-D AMPLIFIER
A fully differential class-D amplifier having a controlled common-mode output voltage is disclosed. The differential class-D amplifier may include a correction...
A driver suitable for driving a power amplifier is provided. The driver includes a voltage buffer circuit and a voltage transforming circuit. The voltage...
PROCESS-COMPENSATED HBT POWER AMPLIFIER BIAS CIRCUITS AND METHODS
The present disclosure relates to a system for biasing a power amplifier. The system can include a first die that includes a power amplifier circuit and a...
An RF amplifier comprising an input-transistor having an input-transistor-base terminal, an input-transistor-collector terminal and an input-transistor-emitter...
LOW NOISE AMPLIFIER
A low noise amplifier includes: first and seventh transistors configured to respectively receive first and second input signals; second, third, and fifth...
SIGNAL AMPLIFYING CIRCUIT WITH NOISE SUPPRESSION FUNCTION
A signal amplifying circuit with noise suppression function includes a first circuit module and a second circuit module. The first circuit module includes a...
RECONFIGURABLE LOAD MODULATION AMPLIFIER
A reconfigurable load modulation amplifier having a carrier amplifier and a peak amplifier that are coupled in parallel is disclosed. The peak amplifier...
RECONFIGURABLE LOAD MODULATION AMPLIFIER
A reconfigurable load modulation amplifier having a first power amplifier (PA) configured to be supplied by a first drain voltage and a second PA coupled in...
Power Controllable Wireless Communication Device
A power controllable wireless communication device includes a variable gain amplifier having a gain that can be controlled based on a gain control signal, a...
High-Speed, High-Voltage GaN-Based Operational Amplifier
A high-speed, high-voltage gallium nitride based (GaN-based) operational amplifier (op amp) is disclosed. The combined high-speed, high-voltage capability...
System and Method for Reconfigurable Phase Shifter and Mixer
An analog circuit for generating a periodic signal at a selected phase, including one or more phase interpolators that receive orthogonal differential RF...
OVERLAPPING UNCOUPLED INDUCTORS FOR LOW-COST MULTI-FREQUENCY
Certain aspects of the present disclosure provide techniques and apparatus for generating multiple oscillating signals. One example circuit generally includes...
ULTRASOUND LENS CLEANER DRIVER WITH FREQUENCY SELECTABLE OSCILLATOR
A frequency selectable driver circuit (driver circuit) includes a current drive transistor between a first and second node for driving a frequency selectable...
VOLTAGE CONTROLLED OSCILLATOR
An oscillator includes a front side voltage divider, a rear side voltage divider, and an oscillation unit. The front side voltage divider includes a first...
Solar Panel Location Detection System and Method
A system for automatically commissioning a solar panel array comprises a plurality of panel monitoring devices, each panel monitoring device connected between...
SOLAR POWERED FILMING HARNESS
A solar-powered harness comprises a retention pocket for holding a mobile device including a camera configured for capturing images, the retention pocket...
MODULAR ROOF COVERING ELEMENT, MODULAR ROOF COVERING, AND ROOF
Roof (2), at least in part covered by a modular roof covering, said modular roof covering comprising a plurality of modular elements (1) for covering said...
PV SYSTEM WITH WIND PERFORMANCE ENHANCEMENT
Pressure equalization between upper and lower surfaces of PV modules of an array of PV modules can be enhanced in several ways. Air gaps opening into the air...
SOLAR CELL APPARATUS
This solar cell apparatus is provided with: a long mounting frame having a guide rail section in an upper portion; and a fixing member, which is provided by...
PANEL MOUNTING BRACKET ASSEMBLY INCLUDING AN ADJUSTABLE HEIGHT EXTENSION
DEVICE AND RELATED METHODS
A system for mounting a solar panel(s) may include a panel mounting bracket(s) having a base to be positioned on a building and a vertical extension including...
WEDGE SPRING CLIP MOUNTING SYSTEM FOR PHOTOVOLTAIC MODULES
A photovoltaic (PV) mounting system having a base portion that is substantially planar and having a first roof-facing side and an opposite module-facing side....
CLAMP AND BOWL MOUNTING SYSTEM FOR PHOTOVOLTAIC MODULES
A photovoltaic (PV) mounting hardware support system having a base portion. The system includes a hinged clamp having a first clamp portion hingedly connected...
BALLOON EQUIPPED WITH A CONCENTRATED SOLAR GENERATOR AND EMPLOYING AN
OPTIMISED ARRANGEMENT OF SOLAR CELLS TO...
A balloon comprises an envelope containing a lifting gas and a concentrated solar radiation solar generator. The solar generator includes a reflector, one or...
HYBRID PHOTOVOLTAIC AND PIEZOELECTRIC FIBER
The invention provides hybrid photovoltaic-piezoelectric energy harvesting devices in the form of flexible filaments. The devices harvest energy from ambient...
FEEDBACK CONTROL DEVICE
Motor control device includes a controller controlling a motor (a calculator controller and an electric current controller), and a detector (an electric...
A power converter for a three-phase electric rotary machine including first and second winding sets includes: first and second inverters corresponding to the...
POWER CONVERSION DEVICE
A power conversion device has an internal power supply switch and a bias power supply switch connected in parallel with the internal power supply switch,...
MULTIGROUP, MULTIPHASE DRIVING SYSTEM AND DRIVING METHOD FOR ROTARY
A multigroup, multiphase driving system includes a power converter that converts direct current power into alternating current power and vice versa, a direct...
FOUR-PHASE SWITCHED RELUCTANCE MOTOR TORQUE RIPPLE THREE-LEVEL SUPPRESSION
A four-phase switched reluctance motor torque ripple three-level suppression method. A first set of torque thresholds is set in rotor position interval...
CONTROL APPARATUS AND CONTROL METHOD FOR AC ROTARY MACHINE, AND ELECTRIC
POWER STEERING APPARATUS
This invention is concerning obtaining a control apparatus and a control method for an AC rotary machine, with which a voltage command can be used up to a...
FAULT TOLERANT ELECTRIC POWER GENERATING SYSTEM
An electrical power generating system comprises a first permanent magnetic generator (PMG) stator winding of a generator machine, a first active rectifier...
POWER GENERATION CONTROL DEVICE OF VEHICLE ALTERNATING CURRENT GENERATOR
The invention enables durability in a higher temperature environment to be ensured without changing mechanical design specifications. A power generation...
DE-GLITCH CIRCUIT AND DE-GLITCH METHOD AND SHORT CIRCUIT PROTECTION DEVICE
A de-glitch circuit, a de-glitch method and a short circuit protection device are provided. In a period during which a first flag signal is in a first logic...
The invention relates to an electric shaver (1) comprising a cutter unit (3), an electric motor (4), a load detector arranged to detect a load current of the...
CONTROLLER FOR A FREE-RUNNING MOTOR
A controller for controlling a multi-phase motor is described. The controller may be configured to measure a plurality of phase voltages of the multi-phase...
APPARATUS FOR DETECTING THE ROTOR POSITION OF AN ELECTRIC MOTOR AND
An apparatus for detecting a position of a rotor of a DC motor with N phases having a plurality of windings. The apparatus includes circuitry to couple at...
CONTROL DEVICE FOR PERMANENT-MAGNET ROTARY MOTOR
A control device converts phase currents supplied to a permanent-magnet rotary motor into a d-axis current and a q-axis current on a dq coordinate axis, and...
CONTROL APPARATUS FOR DYNAMICALLY ADJUSTING PHASE SWITCHING OF THE DC
MOTOR AND METHOD THEREOF
Disclosed are a control apparatus for dynamically adjusting a phase switching of a DC motor and a method thereof. A rotor in the DC motor is divided into 2M...
SYSTEM AND METHOD FOR LIMITING VIBRATION OF ELECTRIC MOTOR
A system and method for limiting the vibration of an electric motor so as to avoid situations in which extreme vibration may result in damage to the motor or...
WIRELESS SIGNAL TRANSMITTING APPARATUS AND WIRELESS ILLUMINATION CONTROL
APPARATUS USING THE SAME
A wireless signal transmitting apparatus, includes: a piezoelectric harvester configured to generate electrical energy responsive to user switch manipulation;...
ENERGY HARVESTING SYSTEM
A system, in certain embodiments, includes a joint and an energy harvesting system. The energy harvesting system includes an energy conversion system...
VIBRATION WAVE MOTOR
Included are a vibrator including a protruding portion that performs high frequency vibration; a friction member, the vibrator being pressed to cause the...
Provided is an electronic device including a rotary power generation device using an electret, which is capable of preventing a spiral spring from being wound...