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Patent # Description
US-9,461,622 Capacitance multiplier and method
Capacitance multiplier circuitry provides an increased equivalent capacitance, and may be implemented using a desirably small footprint. As may be implemented...
US-9,461,621 Duplexer and module including the same
A first filter channel with superior attenuation characteristics for transmission signals and is less susceptible to influence of transmission signals inputted...
US-9,461,620 Elastic wave splitter having a resonant circuit between an antenna terminal and ground
An elastic wave splitter includes an antenna terminal, a transmission terminal and reception terminals. A transmission filter is connected between the antenna...
US-9,461,619 High-frequency module
A high-frequency module includes a multilayer substrate, a switch IC, a SAW duplexer and a matching circuit. The matching circuit includes a wiring line and...
US-9,461,618 Coupled acoustic devices
In one aspect of the invention, an acoustic device has a first coupled resonator filter (CRF) and a second CRF electrically coupled to one another in series....
US-9,461,617 Piezoelectric film producing process, vibrator element, vibrator, oscillator, electronic device, and moving object
A vibrator element includes: a base portion; and a vibrating arm extending from the base portion, the vibrating arm including a piezoelectric film that contains...
US-9,461,616 Bulk wave resonator having an aluminum nitride film containing scandium and ScAlN protective layer
A bulk wave resonator that includes an aluminum nitride film containing scandium on a substrate, a first electrode disposed on one surface of the aluminum...
US-9,461,615 Vibrator element, vibrator, oscillator, electronic apparatus, and moving object
A vibrator element includes a base portion, a vibrating arm extending from the base portion, a first electrode provided on the vibrating arm, a second electrode...
US-9,461,614 Asymmetric unbalanced acoustically coupled resonators for spurious mode suppression
A resonator includes a piezoelectric core, a set of electrodes, and at least one ground terminal. The electrodes are arranged on the piezoelectric core and also...
US-9,461,612 Reconfigurable rat race coupler
A reconfigurable rat race coupler and methods of designing and reconfiguring the rat race coupler are disclosed. The reconfigurable rat race coupler, includes a...
US-9,461,611 Low pass filter having attenuation pole and wave splitter
A low pass filter having an attenuation pole includes at least inductors disposed on a series arm which connects an input terminal and an output terminal. The...
US-9,461,610 Apparatus and methods for high voltage variable capacitors
Apparatus and methods for high voltage variable capacitors are provided herein. In certain configurations, an integrated circuit (IC) includes a variable...
US-9,461,609 Apparatus and methods for high voltage variable capacitor arrays with feed-forward capacitors
Apparatus and methods for high voltage variable capacitors are provided herein. In certain configurations, an integrated circuit (IC) includes a variable...
US-9,461,608 Radio frequency filter
A radio frequency filter (1) comprises an input impedance adaption section (2) and a tank capacitor section (3). Thereby, the capacity of the input impedance...
US-9,461,607 Balance filter
The invention discloses a balance filter formed from a combination of a first circuit and a second circuit, wherein both the first circuit and the second...
US-9,461,606 Systems and methods for automatic signal attenuation
The systems, devices, and methods provided herein can be used with an audio source to automatically attenuate a signal from the audio source in response to...
US-9,461,605 Electronic device
An electronic device with a speaker, an amplifier for driving the speaker and a speaker grill provided on the front surface of the speaker includes a pickup...
US-9,461,604 Sound output device and method of adjusting sound volume
A sound output device of the present invention is one that receives a digital audio signal including a plurality of channels and performs digital signal...
US-9,461,603 Method and apparatus to automatically control audio volume
A method includes comparing a magnitude value of an audio signal in a fixed unit section with a target volume level, measuring audio gain in each fixed unit...
US-9,461,602 Power amplifier module
Improvement in linearity is achieved at low costs in a power amplifier module employing an envelope tracking system. The power amplifier module includes a first...
US-9,461,601 Multichannel digital audio interface
A multichannel input device with automatic number-of-channels detection includes an automatic channel and bit depth detector, a digital audio interface (DAI),...
US-9,461,600 Method for high-frequency amplifier using power gain-boosting technique
The present invention provides a power gain-boosting technique for an amplifier in order to compensate for the decrease of G.sub.mag in a transistor at high...
US-9,461,599 Dynamic bias current adjustment for power amplifiers
In one embodiment, a circuit comprises a power amplifier. The circuit further comprises a memory that stores bias current values corresponding to a plurality of...
US-9,461,598 Power amplifier
A power amplifier includes a clamping circuit configured to provide a clamped voltage from a power supply; an amplifier pair having first inputs coupled to the...
US-9,461,597 Weighted memory polynomial method and system for power amplifiers predistortion
A system and method for linearizing a power amplifier using digital predistortion technique is provided including processing circuitry, the processing circuitry...
US-9,461,596 Doherty power amplifier with integrated pre-distortion
The present invention implements a series of analog gain and phase correction circuits in each leg of the N-way Doherty to significantly reduce amplitude...
US-9,461,595 Integrator for class D audio amplifier
An apparatus includes voltage-to-current conversion circuitry comprising a first voltage-to-current converter and a second voltage-to-current converter. The...
US-9,461,594 Power amplifier module
Consumption current may be reduced in a power amplifier module in which a power supply voltage supplied to a power amplification transistor is controlled...
US-9,461,593 Current-mode folding amplifier
The current-mode folding amplifier is a current-mode saw-tooth folding amplifier having a minimal number of current mirrors in the signal path from input to...
US-9,461,592 Distortion compensation device
A distortion compensation device compensates a non-linear distortion of a power amplifier included in a wireless communication apparatus that employs the power...
US-9,461,591 RF/microwave power divider with port to port isolation
A power divider may coherently divide an RF or microwave input signal into multiple instances of that signal. The power divider may include: an input port that...
US-9,461,590 Envelope tracking in connection with simultaneous transmission in one or more frequency bands
Envelope tracking (ET) is enabled in connection with single-band or multi-band transmission. One example system includes two or more power amplification...
US-9,461,589 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...
US-9,461,588 Doubly balanced josephson junction mixer
Embodiments are directed to doubly balanced superconducting mixers and to methods for modulating a radio frequency signal using multiple tunable inductive...
US-9,461,587 FM receiver that receives fm signal and method for receiving FM signal
A quadrature detector quadrature-detects an FM signal. An FM detector generates a detection signal by FM detecting an FM signal that has been ...
US-9,461,586 Spintronic oscillator, and use thereof in radiofrequency devices
An oscillator is provided including a nanopillar and current injector for injecting a power supply current through the nanopillar, the nanopillar including at...
US-9,461,585 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 vibrator; a third terminal to which a...
US-9,461,584 Compensation circuit and inverter stage for oscillator circuit
A circuit includes an oscillator circuit to receive a bias current and generate an oscillating signal at an output node. A current differencing circuit...
US-9,461,583 System and method for a voltage controlled oscillator
In accordance with an embodiment, a voltage controlled oscillator (VCO) includes a VCO core having a plurality of transistors and a varactor circuit that has a...
US-9,461,582 Electrical parametric testing for back contact semiconductor solar cells
Methods and structures for extracting at least one electric parametric value from a back contact solar cell. According to one embodiment, a first layer of...
US-9,461,581 Shadowing compensation device for solar cell module
A shadowing compensation device for a solar cell module has an input port, an isolated DC-DC power converter, and an output port. The input port is connected to...
US-9,461,580 Structure for improving strength of tabular portion and substantially rectangular parallelepiped member
A polygon in a tabular portion includes first and second axes of symmetry substantially orthogonal to each other. A top surface of the tabular portion has a...
US-9,461,579 Apparatus for forming and mounting a photovoltaic array
A photovoltaic (PV) module framing and coupling system enables the attachment of PV modules to a roof or other mounting surface without requiring the use of...
US-9,461,578 Motor control device and motor control method
A motor control device of a vehicle includes a motor and a lock mechanism for locking the rotation of vehicle wheels. The motor control device includes a...
US-9,461,577 Controlling an electrically-driven actuator
In some aspects, an actuation system includes an electrical positioning driver and an electrically-driven actuator. A voltage boost converter in the electrical...
US-9,461,576 Fan motor drive device and blower device
A fan motor drive device configured to drive a fan with a motor includes a position speed estimating calculator configured to calculate estimated values of a...
US-9,461,575 Rotary electric machine control apparatus
A rotary electric machine control apparatus controlling drive of a rotary electric machine includes a pre-limit d-axis voltage arithmetic portion calculating a...
US-9,461,574 Motor control system for determining a reference d-axis current and a q-axis current
A motor control system for determining a reference d-axis current and a reference q-axis current is provided. The motor control system includes a motor, a DC...
US-9,461,573 Fault handling system for doubly fed induction generator
Fault Ride Through (FRT) transient management system configured to enhance the FRT capability doubly-fed induction generator (DFIG)-based wind turbines. A grid...
US-9,461,572 Method for controlling a wind turbine during an asymmetrical grid fault and a wind turbine
The invention is directed to a method for controlling a wind turbine connected to a three-phase electrical supply grid during an asymmetrical grid fault. The...
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