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Selecting of a pre-filter in a receiver of a communication system
Embodiments provide a receiver comprising an input coupled to a communication channel for receiving an input signal from the communication channel, a first...
Transformer coupled capacitive tuning circuit with fast impedance
switching for plasma etch chambers
A transformer coupled capacitive tuning (TCCT) circuit for an inductively coupled plasma (ICP) chamber includes a matching circuit including a first switched...
Impedance transformation circuit and wireless communication apparatus
A first coil element includes a first loop-shaped conductor and a second loop-shaped conductor. A second coil element includes a third loop-shaped conductor and...
Apparatus and methods for high voltage variable capacitor arrays with
Apparatus and methods for high voltage variable capacitors are provided herein. In certain configurations, an integrated circuit (IC) includes a variable...
Musical dynamics alteration of sounds
An improved method and arrangement for altering musical dynamics of a sound S included in a sound signal is disclosed. The altering of the musical dynamics is...
Adaptive audio equalization for personal listening devices
An audio processor has an active noise cancellation (ANC) processor to compute an S-filter, which estimates a transfer function from an earpiece speaker, that...
Open-gain trans-impedance amplifier with programmable input impedance
In at least some examples, a communication device includes a photo-diode to convert an optical signal into an electrical current and an open-gain ...
Devices and methods for audio volume adjustment
Systems, devices and methods are provided for audio volume adjustment. For example, a noise volume level of current ambient noise and a first volume level of a...
The application relates to digital to analogue conversion circuits having dynamic gain control. A digital variable gain element (102) may apply gain to an input...
Multi-varactor approach for improved VCO gain
An apparatus with a multi-varactor circuit for suppressing VCO gain is described herein. According to an embodiment, the apparatus comprises a plurality of...
A differential amplifier includes a differential circuit section, a gain circuit section amplifying the output of the differential circuit section and...
Multiple-state, switch-mode power amplifier systems and methods of their
An embodiment of an amplifier includes N (N>1) switch-mode power amplifier (SMPA) branches. Each SMPA branch includes two drive signal inputs and one SMPA...
Reconfigurable bias and supply drivers for radio frequency power
In some example embodiments, there is provided an apparatus. The apparatus may include a direct current voltage source and/or an alternating current voltage...
Multimode RF amplifier system
Multimode radio frequency (RF) amplifier systems and techniques are disclosed. In one embodiment, a multimode radio frequency (RF) amplifier system has a first...
Amplifier arrangement comprising a master amplifier and at least one slave
An amplifier arrangement for amplifying at least one first and one second audio input signal. In one embodiment, the arrangement includes a master amplifier...
Amplifier arrangement with limiting module
An amplifier arrangement for amplifying an audio input signal AES into an audio output signal AAS, having a conditioning apparatus for converting the audio...
Femtowatt non-vacuum tube detector assembly
In one embodiment, a femtowatt sensitivity optical detector is provided using one or more photodiodes, intended as a replacement for the photomultiplier based...
Audio amplifier using multi-level pulse width modulation
The present invention relates in one aspect to a class D audio amplifier with improved output driver topology supporting multi-level output signals such as...
Tunable tube amplifier system of a radio-frequency power generator
Tube amplifier system including a plurality of conductor walls extending parallel to a longitudinal axis and defining an interior space therebetween. The tube...
World band radio frequency front end module, system and method thereof
The present disclosure relates to a World Band Radio Frequency Power Amplifier and a World Band Radio Frequency Front End Module. The World Band Power Amplifier...
Amplifier device and wireless communication device
An amplifier device 1 includes: a distortion compensation section 3 that performs distortion compensation for an input signal x to an amplifier 2 by digital...
Dual-band doherty amplifier and method therefor
A dual-band Doherty amplifier and method therefor are provided. The dual-band Doherty amplifier includes a first amplifier gain element, a first transmission...
Communications based adjustments of an offset capacitive voltage
A parallel amplifier and an offset capacitance voltage control loop are disclosed. The parallel amplifier has a parallel amplifier output, which is coupled to...
Power amplifier saturation detection
In a portable radio transceiver, a power amplifier system includes a saturation detector that detects power amplifier saturation in response to duty cycle of...
Line driver with active termination and associated method
A line driver and a method for driving a load are proposed. The line driver includes a current amplifier and a feedback network. The current amplifier has an...
Passive mixer with duty cycle improvement through harmonics level
A signal generation circuit includes a voltage controlled oscillator configured to generate a differential oscillator signal having an amplitude. A passive...
Multimode oscillator enabling simultaneous monitoring of variations in
several resonance frequencies of a resonator
A multimode oscillator comprising: a resonator including: a moving element; actuators of the moving element according to two symmetric and antisymmetric...
Voltage controlled oscillator with common mode adjustment start-up
The present disclosure provides methods and apparatus for dynamically adjusting the common mode voltage at the LC tank node and/or the power supply voltage of a...
Oscillator and radio communication device
According to an embodiment, there is provided with an oscillator including: a clock circuit, a power supply current source and an oscillating circuit wherein...
Variable gain electro-mechanical oscillator and method for starting
A cross-coupled complementary balanced electro-mechanical oscillator and a method for generating balanced oscillations. The oscillator comprises an...
Driving crystal oscillator startup at above, below and operating frequency
A circuit includes a crystal oscillator to generate an output frequency for a circuit. A driving oscillator generates a startup signal having a driving...
Crystal oscillator start-up circuit
A crystal oscillator start-up circuit capable of reducing a start-up time of a crystal oscillator is disclosed. The crystal oscillator start-up circuit is...
Solar array condition monitoring through controlled inverter voltage
A PV system includes an irradiance meter to measure solar irradiance received by a PV array in the system. A PV inverter is electrically connected to the PV...
Solar cell module and systems incorporating same
An electrical connection system comprising a plurality of electrical components electrically interconnected by a plurality of multi-terminal electrical...
Solar module installation system and method
A solar panel installation includes at least one support cable and at least two support structures configured to hold the at least one support cable in...
Photovoltaic panel mounting rail with integrated electronics
A photovoltaic mounting rail that includes an elongate bottom wall, a mounting support, an outer sidewall and one or more electronic components. The mounting...
System and method for controlling regenerating energy in an adjustable
A system and method for controlling an adjustable speed drive (ASD) to decelerate an AC load during a generating mode of operation is disclosed. The ASD...
An electric machine has a primary mechanical output or input, a plurality of electric sub-machine rotors each having an output or input shaft, a plurality of...
Switched reluctance motor
A switched reluctance motor includes: a stator provided with a plurality of stator teeth as salient poles in a radial fashion with winding wire wound around...
Motor drive switched mode power supply systems and methods
The embodiments described herein include one embodiment that provides a motor drive that includes driver circuitry that controls operation of an inverter in the...
Wind turbine having improved overvoltage protection
A wind turbine comprises a wind rotor, a generator driven by the wind rotor, a converter, wherein the generator and the converter generate electrical energy...
The invention relates to a method for automatic regulation of a system in which a plurality of parameters characteristic of the system are measured and in which...
System and method of detecting a wiring configuration for a controlled
Some embodiments relate to a controlled field alternator where the alternator is wired in a low wye configuration (coils wired in series or parallel). The first...
Rotary drive mechanism and light dispersion system having the same
A rotary drive mechanism provides a mechanism for driving light dispersing element having a high wavelength-moving speed and a high wavelength-resolving power....
Motor control device, image forming apparatus, motor control method, and
computer-readable storage medium
A motor control device includes a controller configured to output a control signal to a motor driver, the control signal instructing the motor driver to cut off...
Motor driving device and vacuum pump
A motor driving device comprises: an inverter having a plurality of switching elements for driving a motor; an arithmetic section for calculating a rotational...
Sensorless control of a brushless permanent-magnet motor
A method of controlling a brushless permanent-magnet motor. The method includes generating a first signal having a voltage that is proportional to a voltage...
Phase detector, motor drive controller, motor device, and method of
detecting phase of rotor
A phase detector includes a crossing-point phase detection circuit to compare signals levels of pairs of sensor signals and output crossing-point phase...
Power output stage, method for operation
The invention relates to a power output stage (1), in particular for a controller of an electrical machine (2) for a motor vehicle, comprising at least one...
Method for diagnosing electric water pump of engine
A method for diagnosing an electric water pump of an internal combustion engine includes determining whether a present condition is a coil-open diagnosis...