67results about "Discontinuously variable inductances/transformers" patented technology

Disclosed is a tunable inductor device having a substrate, a planar spiral conductor having a plurality of spaced-apart turns disposed over the substrate, and a phase change switch (PCS) having a patch of a phase change material (PCM) disposed over the substrate between and in contact with a pair of adjacent segments of the plurality of spaced-apart turns, wherein the patch of the PCM is electrically insulating in an amorphous state and electrically conductive in a crystalline state. The PCS further includes a thermal element disposed adjacent to the patch of PCM, wherein the thermal element is configured to maintain the patch of the PCM to within a first temperature range until the patch of the PCM converts to the amorphous state and maintain the patch of the PCM within a second temperature range until the first patch of PCM converts to the crystalline state.

This invention discloses a multi-core variable inductor control method based on illumination adjustment and its application in a boost converter. The method acquires real-time ambient light intensity information through an ambient light sensor and transmits the collected light data to a controller. The controller controls the excitation current of the control winding in the multi-core variable inductor according to a preset illumination threshold, thereby adjusting the equivalent inductance value of the variable inductor. By adjusting the inductance value, the boost converter dynamically switches between continuous conduction mode (CCM), boundary conduction mode (BCM), and discontinuous conduction mode (DCM) to adapt to different illumination conditions and load requirements. This method can improve the dynamic response capability, maximum power point tracking efficiency, and overall energy conversion efficiency of photovoltaic systems under different irradiance intensities, exhibiting good environmental adaptability and broad application prospects.

Certain aspects of the present disclosure provide wideband inductive component(s). An example method of wireless communication by an apparatus includes feeding a first signal to a wideband inductive component configured to operate at a first frequency band in a first mode. The method further includes feeding a second signal to the wideband inductive component configured to operate at a second frequency band in a second mode.

The coil former (1) for the inductive component (7) comprises a base body (2) wound in a partial area with an electrically insulating foil (3). The inductive component (7) comprises the coil former (1) and a winding (8) wound around the coil former, whereby the electrically insulating foil (3) is disposed between the base body (2) and the winding (8). In the method for adjusting the inductance, the length of the electrically insulating foil (3) is selected according to the target value of the inductance.

This invention discloses a tunable inductor device having a substrate, a planar helical conductor, and a phase change switch (PCS). The planar helical conductor has a plurality of spaced-apart turns disposed on the substrate. The PCS has a patch of phase change material (PCM) disposed on the substrate and in contact with a pair of adjacent segments of the plurality of spaced-apart turns. The patch of PCM is electrically insulating in an amorphous state and conductive in a crystalline state. The PCS further includes a thermal element disposed adjacent to the patch of PCM, wherein the thermal element is configured to maintain the patch of PCM within a first temperature range until the patch of PCM transitions to the amorphous state, and within a second temperature range until a first patch of PCM transitions to the crystalline state.

The application discloses a high-performance millimeter wave active vector synthesis phase shifter, which sequentially comprises an input matching amplification circuit, a quadrature coupler, two inter-stage processing circuits, a vector synthesizer and an output matching circuit; the input matching amplification circuit is used for realizing impedance matching, DC isolation and power amplification of an input signal; the quadrature coupler is used for converting the input signal into an output signal with a phase difference of 90 degrees; the inter-stage processing circuit is used for amplifying, noise-reducing and phase adjusting two signals with a phase difference of 90 degrees; the vector synthesizer is used for vector synthesizing the two signals processed by the inter-stage processing circuit; and the output matching circuit is used for realizing impedance matching of the output signal. The application not only realizes optimization of loss, phase error and gain error, but also has the characteristics of large bandwidth, high precision and high integration.

The application relates to the field of transformers, in particular to a power distribution transformer capable of automatically adjusting voltage, which comprises a power distribution transformer body, a drive box is installed on one side of the power distribution transformer body through an insulating mounting cylinder, an adjusting disc is rotatably installed at the bottom of the drive box, a plurality of voltage transformation containers are arranged below the adjusting disc, each voltage transformation container is connected with adjusting rod one, adjusting rod two and adjusting rod three respectively, a connecting rod is connected with one end of each adjusting rod, and one end of the connecting rod is in contact and communication with a conductive contact block arranged on the inner wall of a voltage transformation adjusting cylinder through an excitation contact block. When the voltage fluctuation range is large, the power distribution transformer body is tripped, an electromagnet is used to adsorb the adjusting rod assembly, the adjusting rod of the corresponding line is adsorbed to go up, at this moment, the excitation contact block is separated from the conductive contact block of the corresponding voltage line, and the drive motor rotates the excitation contact block to contact and power on the conductive contact block of another voltage gear.

Methods and apparatuses for use in tuning reactance are described. Open loop and closed loop control for tuning of reactances are also described. Tunable inductors and / or tunable capacitors may be used in filters, resonant circuits, matching networks, and phase shifters. Ability to control inductance and / or capacitance in a circuit leads to flexibility in operation of the circuit, since the circuit may be tuned to operate under a range of different operating frequencies.

The invention discloses a multi-magnetic-core variable inductor control method based on illumination adjustment and application of the multi-magnetic-core variable inductor control method in a boost converter. The method comprises the following steps: acquiring external illumination intensity information in real time through an illumination sensor arranged in an environment, and transmitting the acquired illumination data to a controller; and the controller controls the excitation current of the control winding in the multi-magnetic-core variable inductor according to a preset illumination threshold value, so that the equivalent inductance value of the variable inductor is adjusted. Dynamic switching of the boost converter among a continuous conduction mode (CCM), a boundary conduction mode (BCM) and a discontinuous conduction mode (DCM) is realized by adjusting an inductance value so as to adapt to different illumination conditions and load requirements. According to the method, the dynamic response capability, the maximum power point tracking efficiency and the overall energy conversion efficiency of the photovoltaic system under different irradiation intensities can be improved, and the method has good environment adaptability and wide application prospects.

The application belongs to the technical field of thin film inductance and magnetron sputtering, and particularly relates to a three-dimensional spiral variable thin film inductance and a preparation method thereof. The inductance comprises a racetrack type magnetic core, the magnetic core comprises oppositely arranged first and second long arms, oppositely arranged first and second short arms, a plurality of first spiral coils arranged on the first long arm, and a plurality of second spiral coils arranged on the second long arm. Each first spiral coil is provided with contacts at both ends, adjacent first spiral coils are connected in series through shared contacts located between the two, each second spiral coil is provided with contacts at both ends, and adjacent second spiral coils are connected in series through shared contacts located between the two. The magnetic core is a high-entropy alloy magnetic core, and the high-entropy alloy composition comprises Zr and / or B, Fe, Co and Ni. The application can supply power to each coil individually or to the combination of multiple coils through the contacts, and has stronger design and application flexibility.

Embodiments of this application provide an integrated circuit, a chip, and a terminal, and relate to the field of circuit technologies, to reduce layout areas occupied by a first inductor and a second inductor in the integrated circuit, thereby reducing a layout area occupied by the integrated circuit. The integrated circuit includes the first inductor and the second inductor. The first inductor includes a first coil, and the first coil is a loop having a first opening. The second inductor includes a second coil and a third coil that are connected in series, and the second coil has a second opening. A magnetic field direction of the second coil is opposite to a magnetic field direction of the third coil. The second coil and the third coil are nested in the first coil, and the first inductor is not in direct contact with the second inductor

An inductor includes a coil and a magnetic core. The coil has a cavity which extends axially, and the magnetic core is disposed through the cavity. The magnetic core includes a first magnetic portion and a second magnetic portion. The first magnetic portion and the second magnetic portion are arranged in an axial direction of the coil, and the first magnetic portion and the second magnetic portion have different radial sizes.

The utility model discloses a magnetic integrated transformer which is formed by integrating a voltage transformation unit and an inductance unit, and a base is fixedly arranged at the bottom of the voltage transformation unit and the bottom of the inductance unit. The voltage transformation unit comprises a plurality of first magnetic core elements and first edge magnetic elements, the first magnetic core elements are sequentially connected end to end to form a first frame, a first mounting space is formed between every two first magnetic core elements, and a voltage transformation unit magnetic core is arranged in each first mounting space; the first edge magnetic element is connected to the top of the first frame; the transformer is formed by integrating a plurality of transformation units and inductance units, and when the transformation units and the inductance units are formed, a common surface is arranged for magnetic core elements, so that the volume and the weight of the inherited transformer are reduced, and the efficiency and the power density of the integrated transformer are improved; the size of the air gap between the magnetic core and the magnetic column in the transformer is set to be an adjustable structure, so that required excitation inductance and resonance inductance can be obtained through adjustment.

An inductor device includes a first inductor, a switch, and a second inductor. The first inductor includes a first, a second, a third, and a fourth trace. The first trace is disposed at a first area of the inductor device. The second trace is disposed inside the first trace. The third trace is disposed at a second area of the inductor device. The fourth trace is disposed inside the third trace. When the switch is turned off, the first, the second, the third, and the fourth trace form first path. When the switch is turned on, the first, the third, and the fourth trace form second path. The second inductor includes a fifth and a sixth trace. The fifth trace is disposed at the first area of the inductor device. The six trace is disposed at the second area of the inductor device, and coupled to the fifth trace.

An inductor device is disclosed. The inductor device includes a first ring structure and a second ring structure. The second ring structure is disposed within the first ring structure and paralleled to the first ring structure. A first open end of the first ring structure and a first open end of the second ring structure are selectively connected or unconnected.

An inductor device is disclosed. The inductor device includes a first ring structure and a second ring structure. The second ring structure is disposed within the first ring structure and is paralleled to the first ring structure. The first ring structure and the second ring structure are selectively connected or unconnected.

The inductor structure has a first terminal and a second terminal, and includes a conductor path between the first terminal and the second terminal. The conductor path includes a first inductor, a second inductor, a third inductor, a fourth inductor, a fifth inductor, and a sixth inductor. The conductor path may be configured such that when a current flows from the first terminal to the second terminal, the current flows in a first direction in the first inductor, the third inductor, and the fifth inductor, and the current flows in a second direction in the second inductor, the fourth inductor, and the sixth inductor. The first direction may be clockwise, and the second direction may be counterclockwise, and vice versa.

A drive system 3 for a diverter 1, 30 and a method for driving at least one diverter 1, 30 are disclosed. A drive shaft 16 connects the drive system 3 to the at least one diverter 1, 30. A motor 12 serves to drive the drive shaft 16. A feedback system 4 is configured to determine the position of the drive shaft 16 and generate a feedback signal based on the position. A controller 2 affects the operation of the motor 12 in response to the feedback signal, and the controller 2 selects a travel profile 22 to affect the motor 12 accordingly.

This disclosure is directed to an electronic circuit, a transmitting apparatus and an electronic device. The electronic circuit generally comprises a transformer and a coupler. The transformer comprises a primary coil and a secondary coil, wherein the primary coil receives a first signal from a power amplifier, and the secondary coil is magnetically coupled with the primary coil and outputs a second signal to an antenna. The coupler comprises two coupling paths for obtaining a forward power and a reflected power for the second signal. Among the two coupling paths, a first coupling path is magnetically coupled with a first part of the primary coil and the secondary coil to generate a first voltage indicating the forward power for the second signal. In addition, a second coupling path is magnetically coupled with a second part of the primary coil and the second coil to generate a second voltage indicating a reflected power for the second signal. According to the embodiments of the present disclosure, bi-directional coupling without sacrificing chip area and insertion loss can be achieved.

A system includes a mixer, an amplifier, and a switchable transformer. The switchable transformer includes a primary inductor coupled between a first output and a second output of the mixer, a first switch, a second switch, and a secondary inductor coupled between a first input and a second input of the amplifier, wherein the secondary inductor is magnetically coupled with the primary inductor. The secondary inductor includes a first inductor coupled between the first input of the amplifier and a first terminal of the first switch, a second inductor coupled between a second terminal of the first switch and the second input of the amplifier, a third inductor coupled between the first terminal of the first switch and a first terminal of the second switch, and a fourth inductor coupled between the second terminal of the first switch and a second terminal of the second switch.

An inductor device includes a first trace, a second trace, and a second switch. The first trace includes a first sub-trace, a first switch and a second sub-trace. The first sub-trace includes a first line and a second line. The first switch is configured to switch the first sub-trace to the first line or switch the first sub-trace to the second line. The second sub-trace is coupled to one terminal of the first sub-trace at a first node. The second trace includes a third sub-trace and a fourth sub-trace. The fourth sub-trace is coupled to one terminal of the third sub-trace at a second node. The second switch is coupled to the first node and the second node.

This invention discloses a self-excited balanced Buck variable inductor structure, including a specifically arranged magnetic core structure, winding method, and connection method. The magnetic core structure comprises left, right, and central magnetic pillars, and upper and lower magnetic plates. The left and right magnetic pillars are symmetrically distributed on both sides without air gaps, while the central pillar has the same air gap and is placed between them. Auxiliary excitation windings AUX1 and AUX2 are wound clockwise on the left and right magnetic pillars, respectively, while main windings MAIN1 and MAIN2 are wound counterclockwise on the central pillar, respectively. The auxiliary excitation windings and main windings are connected to the Buck main circuit according to a specific connection method. This invention utilizes the Buck inductor current to change the permeability, achieving adaptive adjustment of the inductance value without the need for an auxiliary current source. The magnetic flux density of the left and right magnetic pillars is balanced, improving the core utilization rate and the Buck dynamic response speed.

A digital phase shifter includes a first phase shift circuit of which a phase shift amount has frequency dependence, and a second phase shift circuit having frequency dependence of a phase shift amount that allows relaxation of the frequency dependence of the phase shift amount in the first phase shift circuit.

The application discloses a winding structure of a multi-path integrated synchronous coil. The winding of a transformer is not divided into a primary winding and a secondary winding, the number of turns of all windings is the same, the same name ends are the same and the windings have common ends, all windings share a magnetic core, each single battery in a series battery group is connected in parallel with two windings with the same number of turns, the same first ends, the same last ends and the common ends, and n series battery groups use 2n windings. The number of turns of each winding is consistent, the inductance is consistent, the lead battery balancing precision is high, the voltage difference of the battery balancing is significantly reduced, and the battery balancing requirement can be well met.

This disclosure is directed to an electronic circuit, a transmitting apparatus and an electronic device. The electronic circuit generally comprises a transformer and a coupler. The transformer comprises a primary coil and a secondary coil, wherein the primary coil receives a first signal from a power amplifier, and the secondary coil is magnetically coupled with the primary coil and outputs a second signal to an antenna. The coupler comprises two coupling paths for obtaining a forward power and a reflected power for the second signal. Among the two coupling paths, a first coupling path is magnetically coupled with a first part of the primary coil and the secondary coil to generate a first voltage indicating the forward power for the second signal. In addition, a second coupling path is magnetically coupled with a second part of the primary coil and the second coil to generate a second voltage indicating a reflected power for the second signal. According to the embodiments of the present disclosure, bi-directional coupling without sacrificing chip area and insertion loss can be achieved.

A variable capacitance element (100) includes a switching section (10) configured as a field effect transistor, and an element section (20) electrically connected to the switching section (10) and configured as a capacitor (passive element). The element section (20) includes a terminal electrode (5a) (first terminal electrode) electrically connected to a source electrode (5), and a terminal electrode (22) (second terminal electrode) configured as a first capacitor (first passive element) between the source electrode (5) and a drain electrode (6), and configured as a second capacitor (second passive element) at least between the drain electrode (6).

This application provides a radio frequency circuit and an adjustable transformer, relates to the field of electronic technologies, and is used for signal receiving or sending in different frequency bands in a 5G millimeter wave. The radio frequency circuit includes an adjustable transformer, a first-stage amplifier, and a second-stage amplifier, the first-stage amplifier is coupled to the second-stage amplifier by using the adjustable transformer, and a bandwidth of the adjustable transformer is adjustable. When the bandwidth of the adjustable transformer is adjusted, an operating frequency band of the radio frequency circuit covers an n258 frequency band and an n257 frequency band, or the n258 frequency band and an n261 frequency band.

An inductor structure has a first terminal and a second terminal, and includes a conductor path between the first terminal and the second terminal. The conductor path includes a first inductor, a second inductor, a third inductor, a fourth inductor, a fifth inductor, and a sixth inductor. The conductor path may be configured such that, when a current flows from the first terminal to the second terminal, the current flows in a first direction in the first inductor, the third inductor, and the fifth inductor, and the current flows in a second direction in the second inductor, the fourth inductor, and the sixth inductor. The first direction may be clockwise and the second direction may be counterclockwise, or vice versa.