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Film bulk acoustic resonators comprising backside vias
An film bulk acoustic wave resonator (FBAR) structure has an FBAR and a via disposed substantially directly beneath the FBAR. The via is in thermal contact with...
Surface acoustic wave device including first and second wiring electrodes
A surface acoustic wave device includes, on a substrate, functional electrode units each including at least one IDT electrode, wiring electrodes connected to...
Accoustic resonator having integrated lateral feature and temperature
A bulk acoustic wave (BAW) resonator device includes a bottom electrode on a substrate over one of a cavity and an acoustic mirror, a piezoelectric layer on the...
Electronic device with adjustable wireless circuitry
An electronic device may be provided with wireless circuitry. Control circuitry may be used to adjust the wireless circuitry. The wireless circuitry may include...
Polar-type low pass filter and demultiplexer equipped therewith
A polar-type low pass filter includes a low pass filter portion and first, second and third ground conductors, in a laminated body. The low pass filter portion...
Method for adjusting volume and electronic device thereof
An apparatus and method for selectively provide an automatic volume adjustment service considering an audio output signal in an electronic device. A method for...
Contextual volume control
Adjustment of volume level of a mobile device, by the mobile device without direct or manual user-input, based on one or more contextual parameters detected by...
Combiner circuit for a class-E outphasing power amplifier
Lumped-element based class-E Chireix combiners are disclosed that are equivalents of a quarter-wave transmission line combiner. The proposed class-E equivalent...
Doherty amplifier with efficiency optimization
An amplifier comprises a main-amplifier circuit, an auxiliary-amplifier circuit and a signal-generating device. Output terminals of the main-amplifier circuit...
Boosted differential class H amplifier
A differential audio amplifier system and a related system to generate an output signal free or with only very limited clipping are disclosed. It provides a...
Frequency enhanced active transistor
A transistor cell can be modeled as a transistor with a collector, a base, and an emitter operating with a current at the collector to produce a minimum...
Weakly coupled RF network based power amplifier architecture
RF communications circuitry, which includes a first group of RF power amplifier circuits and a first weakly coupled RF network, is disclosed. The first group of...
Broadband amplifier topology with current shutdown
An apparatus includes a first depletion-mode transistor, a first enhancement-mode transistor, and a pull down switch. The first depletion-mode transistor has a...
Power amplifier spurious cancellation
This disclosure relates generally to power amplification devices and methods of operating the same. The power amplification devices are capable of reducing (and...
Current sense circuit using a single opamp having DC offset auto-zeroing
A current sense circuit having a single opamp DC offset auto-zero capability that allows for continuous current sensing operation while at the same time...
High bandwidth amplifier
An amplifier (100) comprising: first, second, third and fourth transistors (M1, M2, M3, M4), an input (10) for an input signal, and a first output (22) for a...
Distortion compensation apparatus and method therefor
A distortion compensation apparatus includes a pre-distorter, a gain control unit, and a learning unit. The pre-distorter adds distortion according to...
RF power amplifier with total radiated power stabilization
A radio frequency (RF) amplification circuit and a closed-loop amplitude linearization circuit are disclosed. The RF amplification circuit amplifies an RF...
Wide-band single-ended-to-differential low-noise amplifier using
complementary push-pull structure
A wide-band single-ended-to-differential low-noise amplifier using a push-pull architecture with an input node coupled to the sources of a first PMOS transistor...
Amplification device and amplification method
An amplification device includes at least two amplifiers. The amplification device further includes: a switching unit that switches an amplification mode to one...
A sense amplifier measures a state of a memory cell coupled to a sense node. The sense amplifier receives a control signal to enable the sense amplifier. The...
Dual instantaneous envelope tracking
Power supply circuitry, which includes a parallel amplifier and a parallel amplifier power supply, is disclosed. The power supply circuitry operates in either...
Amplifier topology achieving high DC gain and wide output voltage range
An amplifier topology achieves enhances DC gain to improve linearity while maintaining a good signal to noise ratio. The amplifier includes an amplifier output...
Methods and structures for dynamically reducing DC offset
An amplifier system includes a low offset amplifier having a first signal input, a second signal input, an output, a resistive digital to analog converter...
MEMS device front-end charge amplifier
This document discusses, among other things, apparatus and methods for a front-end charge amplifier. In certain examples, a front-end charge amplifier for a...
Resonation element, resonator, oscillator, electronic device and moving
A resonation element includes a basal portion, resonating arms extending out in a Y-axis direction from the basal portion, and a vibration substrate, formed of...
High frequency integrated circuit and device using same
Provided is an amplifier with a test oscillator for a high frequency characteristic monitor, which has small power loss in a normal operation state and secures...
Methods and devices for the generation of high frequency clock signals
Methods and devices for the generation of high frequency clock signals. In a transmission line a signal is reflected back and forward. The electric length of...
System and method for dynamically biasing oscillators for optimum phase
Systems and methods for biasing frequency oscillators to minimize phase noise are disclosed. The system may comprise a tank circuit having an inductor, at least...
Semiconductor circuit device, electronic apparatus, and moving object
A semiconductor circuit device includes: a semiconductor circuit provided on a main surface of a semiconductor substrate; and a thin film circuit element...
Semiconductor structure and fabricating process for the same
A semiconductor structure and a fabricating process for the same are provided. The semiconductor structure includes a micro battery cell coupled to a solar cell...
Integrated solar panel
A solar panel is disclosed that can be daisy-chained with other solar panels. The solar panel automatically generates output alternative current (AC) power that...
Solar photovoltaic power generation panel mount
A solar photovoltaic power generation panel mount has a solar photovoltaic power generation panel attached to a mount frame having a plurality of vertical and...
Support assembly for mounting a solar panel unit
A support assembly for mounting a solar panel unit includes a base unit and a supporting unit. The base unit includes a plurality of base tubes that are spaced...
Modular deployable structure
A modular deployable structure that includes at least two panels, one of which is configured to be pivotably attached to a further structure for deployment...
Motor driving device
A motor driving device, which controls a rotation number of a brushed motor by outputting a command signal to a motor controller placed in a current supply...
Motor control device and motor control system
A motor control device includes: a control processing unit that controls the driving of a motor based on a command signal input from a controller and a...
Protective module and method against torque peaks between a motor and an
A protective method is provided against torque peaks between a motor adapted for setting a shaft of the motor into rotation and an electric source adapted for...
Apparatus and method for reducing common mode voltage
An apparatus and a method for that reduce a common mode voltage are provided. The apparatus includes a detecting unit that is configured to detect a common mode...
Derating control of a power inverter module
A system includes a DC battery pack, an inverter coolant loop, first and second temperature sensors, a polyphase electric machine, and a power inverter module...
Medium voltage inverter system
A medium voltage inverter system is provided. The inverter system includes a controller configured to short-circuit the output terminal of the inverter unit...
Method and device for controlling inductive loads
Control circuitry for inductive loads comprehending a DC power source (DC), electrical switches (A and R) and appropriate electrical conductors to direct...
Method and an apparatus for controlling an electrical machine with two or
more multiphase stator windings
An apparatus comprises a processing system (201) configured to produce voltage control signals for controlling an electrical machine (202) comprising two or...
Control apparatus for vibration type actuator
A control apparatus for a vibration type actuator, which uses a vibration wave excited by a vibrating member to actuate a movable member in contact with or...
Direct torque control motor controller with transient current limiter
An AC motor controller is provided that utilizes a direct torque controller and primary and secondary control loops. The primary control loop operates in a...
Method for open-loop and closed-loop control of an electromagnetic machine
Electromagnetic state variables of an electromagnetic machine are represented by space vectors. A setpoint value for the vector of a manipulated voltage at the...
Optimized field oriented control strategies for permanent magnet
A motor control system and associated method includes a transform component configured to receive current values associated with a motor being driven by the...
Power converter and control method for power converter
A control section is configured to, when it is detected that a voltage of a B-terminal of a power generator has exceeded a first predetermined voltage value,...
Wind power excitation synchronous generation system having maximum power
determining unit and control method...
A wind power excitation synchronous generation system having a maximum power determining unit and a control method thereof are disclosed. In this control...
Compressed air energy storage system utilizing two-phase flow to
facilitate heat exchange
A compressed-air energy storage system according to embodiments of the present invention comprises a reversible mechanism to compress and expand air, one or...