Abstract: A common-mode feedback circuit includes a transconductor input stage with differential input terminals, and a frequency-compensated gain stage coupled to the transconductor input stage with differential output terminals. The common-mode feedback circuit also includes a feedback loop having a comparator configured to produce a feedback error signal for the transconductor input stage by comparing with a reference a common-mode sensing signal indicative of a common-mode voltage level sensed at the differential output terminals. In addition, the common-mode feedback loop includes a converter for converting the common-mode voltage level sensed at said differential output terminals into a current signal coupled to the comparator.

Abstract: A multi-phase amplifier circuit includes an amplification circuit configured to generate a plurality of phase signals and to provide the plurality of phase signals to a plurality of inductors. An inductive coupling between a first pair of inductors differs from an inductive coupling between a second pair of inductors by a first coupling difference. The amplification circuit is configured to provide two phase signals comprising a first phase difference of less than 180° to the first pair of inductors and two further phase signals comprising the first phase difference to the second pair of inductors. An inductive coupling between a third pair of inductors differs from an inductive coupling between a fourth pair of inductors by a second coupling difference. The amplification circuit is configured to provide two phase signals comprising a second phase difference of 180° to the third pair of inductors and two further phase signals comprising the second phase difference to the fourth pair of inductors.

Abstract: A bus bar that requires less installation space, and can reliably position and hold an electric wire. An electrical wire is to be connected to a bus bar, and the bus bar is to be joined to an electrode terminal of an electricity storage element. The bus bar includes: an electrical wire connection portion that is constituted by a member included in the bus bar, is provided in an end portion of the bus bar, and to which an end portion of the electrical wire is to be connected. The electrical wire connection portion includes a core wire connection portion to which a core wire of the electrical wire is to be connected; and a positioning and holding portion that is configured to position the electrical wire in a direction (a direction indicated by an arrow Z) that is orthogonal to an axial direction of the electrical wire in plan view, and to hold the electrical wire.

Abstract: A connection terminal includes a conductive terminal main body having a female connection body, and a contact member arranged to oppose an inner circumferential surface of the female connection body in one region of an internal space. A first bulging body and a second bulging body protruding from the inner circumferential surface and electrically connected to a male connection body by sandwiching the male connection body with the contact member are provided in the other region of the internal space. The second bulging body has a first guide portion guiding the male connection body while sliding the male connection body, and a second guide portion guiding the contact member while sliding the contact member. Each of the first and second guide portions is formed in a tapered shape.

Abstract: A light fixture apparatus, system and method that allows the easy retrofitting of recessed and non-recessed mechanical and electrical outlets for lamps, projectors and ceiling fans; providing electrical interconnectivity and mechanical support. It includes a housing, single or multi-threads for mechanical mounting and support as well as the electrical interfaces.

Abstract: A tunable amplifier includes continuous tunability for both frequency and power levels. The tunable amplifier includes a combination of a tunable series resonator and a multi-stage LC network as the output matching network. The tunable amplifier incorporates a variable diode varactor with high breakdown voltage and high tuning range into a tunable resonator. The tunable resonator is connected to a fixed output matching network to enable a wide range of operating frequencies. The tunable amplifier enables high power, high efficiency, broadband and load-modulated power amplification, which is greatly desired for next-generation wireless communication systems and other high-frequency applications.

Abstract: A connector includes an inner conductive body for connecting to a sensor contact on a medical device. An insulator is formed on the inner conductive body. An outer conductive body is formed over the insulator and surrounds the inner conductive body but is electrically isolated from the inner conductive body. The outer conductive body is for making contact at two places on a medical needle on opposite sides of the inner conductive body.

Abstract: An electrical terminal connection system includes a first-housing and a second-housing. The first-housing has a first-electrical-terminal and a terminal-hood. The first-electrical-terminal has a first-planar-section having a rectangular cross-section. The terminal-hood encapsulates an inner-surface and edges of the first-electrical-terminal. The second-housing is configured to mate with the first-housing and has a second-electrical-terminal and a sliding-block. The second-electrical-terminal has a second-planar-section having a rectangular cross-section and overlays an outer-surface of the first-electrical-terminal. The second-housing includes a first-fastener element operable to engage a second-fastener element disposed within the first-housing. The second-housing is drawn into the first-housing when the first-fastener element and the second-fastener element are joined.

Abstract: A connector assembly includes a connector body defining a cylindrical terminal cavity, an elongate conductor, such as an electrical cable, having one end terminated within the first terminal cavity, and a cylindrical first seal axially surrounding a portion of the first conductor. The seal defines a compliant primary sealing ring that is in compressive contact with an inner wall of the terminal cavity. The first seal further defines an elongate frustoconical sleeve. The connector assembly also includes a seal retainer that is attached to the connector body. The seal retainer defines an elongate frustoconical retainer cavity configured to receive first sleeve. At least a portion of the sleeve is in compressive contact an inner surface of the retainer cavity.

Abstract: A current reuse FET amplifier according to the present invention provides an effect of reducing a variation of bias current of the amplifier, with gate voltage or a resistor for self-biasing of an FET of the amplifier changing in accordance with a process variation of saturation current Idss of the FET.

Abstract: An electrical connection structure includes a housing, a connector, a pushing component and a lifting component. The housing has a top portion, a bottom portion and a groove between the top portion and the bottom portion. The connector is disposed in the groove. The pushing component is disposed in the groove and a part thereof is exposed from the opening of the top portion. The lifting component is disposed in the groove and connected between the pushing component and the connector. When the electrical connection structure is connected to the electronic device, the electronic device pushes the pushing component to move in a first direction toward the bottom portion, so that the pushing component drives the lifting component to move in a second direction opposite to the first direction and toward the top portion, so that the lifting component lifts up the connector to be connected to the connection interface.

Abstract: In a system comprising a plurality of gain elements configured in parallel to one another, a harmonically tuned filter provides an isolation circuit to prevent odd-mode differential oscillations. A harmonically tuned filter comprises resistors, inductors, and capacitors (RLC) to selectively allow one or more specific harmonics to pass through the isolation circuit to suppress the odd-mode oscillation. Direct current (DC) and other non-harmonically-related frequencies do not pass through the isolation circuit. Since the resistor is used to dissipate specifically the energy of the harmonic frequencies causing the odd-mode oscillation, the current density through the resistor is much lower than the current density of a typical odd-mode resistor without a harmonically tuned filter.

Abstract: An envelope tracking power supply (ET PS) transmission line switch can be operable between an ET PS and a radio frequency (RF) power amplifier (PA). The ET PS transmission line switch assembly can include a quarter wavelength (¼?) transmission line configured for high impedance at a specified low RF and a switch coupled to a specified point on the quarter wavelength transmission line to generate a high frequency quarter wavelength transmission line when the switch is toggled. The quarter wavelength transmission line is configured to be coupled to a voltage output of the ET PS and a RF output of the RF PA. The high frequency quarter wavelength transmission line is configured for high impedance at a specified high RF, and the specified high RF is higher than the specified low RF.

Abstract: A multi-band RF power amplifier circuit fabricated using GaN technology includes a RF power amplifier coupled to a multi-band RF switch without an intervening impedance matching network between the RF power amplifier and the multi-band RF switch. The multi-band RF switch includes a plurality of Unit HEMT cells. In one IC package, the RF power amplifier, the multi-band RF switch, a controller for controlling the switch and all connection therebetween are totally contained within the IC package. In another IC package, the RF power amplifier and the multi-band RF switch are disposed on a single substrate.

Abstract: An electrical contact includes a compliant portion having an opening extending between contact arms. A first contact arm of the contact arms has multiple resilient engagement sections extending into the opening of the compliant portion and resilient contacting sections extending from the engagement sections in a direction away from the opening. Upon insertion of the compliant portion into the hole of the substrate, the resilient engagement sections of the first contact arm engage an opposed second contact arm of the contact arms, causing each of the resilient contacting sections to move independently of the resilient engagement sections and independently of other resilient contacting sections. Each of the resilient engagement sections and the resilient contacting sections are deformed and generate independent retention forces which are combined to generate the total retention force of the compliant portion.

Abstract: Embodiments of a Doherty amplifier device are provided, including a first amplifier stage having a first gain; a second amplifier stage having a second gain that is less than the first gain; and an input power splitter coupled to inputs of the first and second amplifier stages, wherein the input power splitter includes either an inductive element, a capacitive element, or both coupled between the inputs of the first and second amplifier stages, and a resistive element coupled to the input of the second amplifier stage, the input power splitter respectively delivers first and second power levels to inputs of the first and second amplifier stages, and the resistive element is configured to tune gain linearity of the Doherty amplifier device by increasing the second power level to be greater than the first power level, based on a ratio of the second gain to the first gain.

Abstract: An electrical signal amplifier, having an amplifier input and an amplifier output is provided, which are set up to receive an electrical input signal and to output an amplified signal as electrical output signal, wherein an amplifier circuit arranged between the amplifier input and the amplifier output and amplifying the electrical input signal has a voltage divider circuit and a series circuit of gate-source paths in a transistor arrangement, which is assigned to an amplifier stage, the voltage divider circuit is connected downstream of the amplifier input, and an output of the voltage divider circuit is connected to gate contacts of the series circuit of gate-source paths, and a gate voltage supply circuit is connected to the gate contacts of the series circuit of gate-source paths. The disclosure furthermore relates to a method for amplifying an electrical signal by means of an electrical signal amplifier.

Abstract: A waterproof component includes a housing body, a mat seal, and a mat seal cover. The housing body includes an attachment-hole-insertion portion having a mat-seal-accommodating chamber, an abutting portion configured to abut a first peripheral surface of the attachment hole, a locking claw provided on an insertion tip side of the attachment hole insertion portion, the locking claw to be locked to a second peripheral surface of the attachment hole, and a cover locking portion provided on an insertion tip side of the attachment-hole-insertion portion. The mat seal has an electric wire press-fitting hole. The mat-seal-accommodating chamber accommodates the mat seal. The mat seal cover locks to the cover-locking portion, the mat seal cover interposes the mat seal between the mat seal cover and a bottom wall of the mat-seal-accommodating chamber. The cover locking portion protrudes from the locking claw in an insertion direction toward the attachment hole.

Abstract: A Doherty power amplifier (100) includes: a first amplification circuit (110), including a main power amplification branch and at least one auxiliary power amplification branch; a delay device (383), connected in the main power amplification branch; a combiner network (140), configured to: perform impedance inversion on the first amplification circuit (110), and couple an output end of the main power amplification branch and an output end of the at least one auxiliary power amplification branch to a load (160); and a first power divider (130), connected to an input end of the main power amplification branch and an input end of the at least one auxiliary power amplification branch, and configured to allocate an input signal of the first power divider (130) to the main power amplification branch and the at least one auxiliary power amplification branch.

Abstract: Provided is a multistage amplifier that can achieve both utilizing in a broad bandwidth and suppressing gain reduction. The multistage amplifier includes a plurality of differential amplifiers which are connected in series; and a direct-current component limiter that cuts off a direct-current component of input signals, in which the direct-current component limiter is disposed between the plurality of differential amplifiers, and in which a transistor size of a first differential amplifier which is disposed immediately after the direct-current component limiter is equal to or greater than a transistor size of a second differential amplifier which is disposed two stages before the direct-current component limiter.