40results 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 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.

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 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 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.

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.

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.

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.

The embodiments of the disclosure provide a semiconductor structure and a method for controlling a semiconductor structure. The semiconductor structure including a first, second, third, and fourth coil section, and a first and second route switching circuit. The first route switching circuit is coupled to the first, second, third, and fourth coil section. The first route switching circuit in a first mode conducts the first coil section with the second coil section, and the first route switching circuit in a second mode conducts the first coil section with the fourth coil section and conducts the third coil section with the second coil section. The second route switching circuit is coupled to the second and third coil section, wherein the second route switching circuit selectively conducts the fourth coil section with the third coil section.

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.

An alternative approach to flux pumping in superconducting devices is described for fast and extremely precise tuning of the current during persistent mode operation. Rather than bringing in new flux from outside the circuit, the alternative approach stores a small flux in a tunable inductor (also referred to herein as a “flux bank”) at the initial point of powering. Flux can be transferred back and forth from this bank to the main coil by simply changing the inductance of the bank. This allows for fine and fast adjustments of the persistent current without the use of thermal switches found in other approaches (which limit the adjustment speed and accuracy).

A drive system (3) for a switch (1, 30) and a method for driving at least one switch (1, 30) are disclosed. A drive shaft (16) connects the drive system (3) with the at least one switch (1, 30). A motor (12) is provided for driving the drive shaft (16). A feedback system (4) is provided for determining a position of the drive shaft (16) and for generating a feedback signal based on the position. A control device (2) can act on the operation of the motor (12) depending on the feedback signal, the control device (2) selecting an operating configuration (22) which acts correspondingly on the motor (12).

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.

The present invention is intended to provide the power saving device capable of reducing power consumption by maintaining a constant output voltage even when an input voltage changes, and more particularly, the power saving device capable of improving the performance and lifespan of a load by stably adjusting a supplied voltage through the toroidal core, the multi-channel switch, and the control means for controlling the same and then supplying it to the load side and also reducing power consumption accordingly, and particularly, safely and firmly fixing the toroidal core in which the primary coil and the secondary coil are wound inside the power saving device by using the core fixing members and also preventing a temperature rise by easily discharging the heat generated in the toroidal core out of the device.

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 invention discloses 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), the PCS has a patch of 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, where the patch of PCM is electrically insulated in an amorphous state and electrically conductive in a crystalline state. The PCS further includes a thermal element disposed adjacent to the patch of the PCM, where the thermal element is configured to maintain the patch of the PCM within a first temperature range until the patch of the PCM is converted to the amorphous state, and to maintain the patch of the PCM within a second temperature range until the patch of the PCM is converted to the amorphous state, until the first patch of PCM is converted into the crystalline state.

Some non-limiting aspects of the present disclosure allows an audio notification appliance circuit (MAC) to manage an output voltage for an alarm system by providing a low-cost and energy-efficient method to step up an amplifier output voltage to a required level using configurable transformer winding connections. With this method, only one product is needed to provide a first output voltage or a second output voltage and the amplifier power stage may operate at low voltage levels.

A device has a CMOS metal stack of metal layers oriented substantially horizontally in the CMOS metal stack, and a differential inductor coil oriented substantially vertically in the CMOS metal stack and comprising at least two metal layers of the CMOS metal stack. A device having a semiconductor chip having a substrate and an integrated circuit, a metal stack of a plurality of metal layers, wherein the metal stack is connected to the semiconductor chip, and a planar spiral differential inductor comprising at least two metal layers of the metal stack, wherein the semiconductor chip defines a semiconductor plane having a semiconductor plane normal vector and the planar spiral differential inductor defines a differential inductor plane having a differential inductor plane normal vector, wherein an angle between the semiconductor plane normal vector and the differential inductor plane normal vector is between 1 and 90 degrees.

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.