268results about "Discontinuously variable inductances/transformers" patented technology

Example embodiments of the invention may provide systems and methods for multiple transformers. The systems and methods may include a first transformer that may include a first primary winding and a first secondary winding, where the first primary winding may be inductively coupled to the first secondary winding, where the first transformer may be associated with a first rotational current flow direction in the first primary winding. The systems and methods may further include a second transformer that may include a second primary winding and a second secondary winding, where the second primary winding may be inductively coupled to the second secondary winding, where the second transformer may be associated with a second rotational current flow direction opposite the first rotational current flow direction in the second primary winding, where a first section of the first primary winding may be positioned adjacent to a second section of the second primary winding, and where the adjacent first and second sections may include a substantially same first linear current flow direction.

The invention provides tunable embedded high frequency inductor devices. The inductor device comprises a dielectric substrate. A first conductive line is disposed on a first surface of the dielectric substrate. A second conductive line is disposed on a second surface of the dielectric substrate. An interconnection is disposed perforating the dielectric substrate and connecting the first conductive line with the second conductive line. A coupling region is defined between the first and the second conductive lines. A conductive plug connecting the first conductive line and the second line is disposed in the coupling region. Alternatively, an opening is disposed in the first and second conductive lines to tune inductance of the inductor.

Disclosed is a stacked variable inductors manufactured by stacking M (M>=2) metal layers on a semiconductor substrate, and provides stacked variable inductors comprising, 1 to N inductors continuously connected in serial, wherein each of said inductors is formed on N (N<=M) metal layers that are different each other; first and second ports each connected to the highest positioned inductor and to the lowest positioned inductor among said 1 to N inductors; and at least one MOSFET, and wherein one terminal of at least one MOSFET is connected to one of the first and second ports, and the other one is connected to one of adjacent terminals connected in serial between 1 to N inductors.

A method and apparatus for use in a digitally tuning a capacitor in an integrated circuit device is described. A Digitally Tuned Capacitor DTC is described which facilitates digitally controlling capacitance applied between a first and second terminal. In some embodiments, the first terminal comprises an RF+ terminal and the second terminal comprises an RF− terminal. In accordance with some embodiments, the DTCs comprise a plurality of sub-circuits ordered in significance from least significant bit (LSB) to most significant bit (MSB) sub-circuits, wherein the plurality of significant bit sub-circuits are coupled together in parallel, and wherein each sub-circuit has a first node coupled to the first RF terminal, and a second node coupled to the second RF terminal. The DTCs further include an input means for receiving a digital control word, wherein the digital control word comprises bits that are similarly ordered in significance from an LSB to an MSB.

An improved Rogowski coil is formed on a toroidal core made of a thermoplastic or other moldable material, the core having a preferably continuous groove or grooves extending around the core. The grooves correspond in size to magnet wire which registers within the grooves, thus controlling the specific location of the wires. The grooving may be helical. A return loop can be provided for return path cancellation, or a reverse winding can be added in a direction opposite to the direction of advancement of the main coil. In using the return loop, a resistive network can be added to improve the cancellation of the return path due to the effect of geometries. In addition, it can compensate for thermal and other variations.

An inductive power supply including multiple tank circuits and a controller for selecting at least one of the tank circuits in order to wirelessly transfer power based on received power demand information. In addition, a magnet may be used to align multiple remote devices with the inductive power supply. In one embodiment, different communication systems are employed depending on which coil is being used to transfer wireless power.

Disclosed is a stacked variable inductors manufactured by stacking M (M≧2) metal layers on a semiconductor substrate, and provides stacked variable inductors comprising, 1 to N inductors continuously connected in serial, wherein each of said inductors is formed on N (N≦M) metal layers that are different each other; first and second ports each connected to the highest positioned inductor and to the lowest positioned inductor among said 1 to N inductors; and at least one MOSFET, and wherein one terminal of at least one MOSFET is connected to one of the first and second ports, and the other one is connected to one of adjacent terminals connected in serial between 1 to N inductors.

To present the ID tag including flat coil component, and characteristic adjusting method of ID tag capable of suppressing product fluctuations about the desired characteristic. The flat coil component of the ID tag of the invention comprises a flat coil composed of a conductive material provided continuously and spirally on an insulating substrate, and a jumper disposed on the flat coil with insulation, from one of inner end or outer end of this flat coil to the outside or inside of the flat coil where other end is positioned, in which the jumper is composed of a plurality of jumpers variable in the number of pieces in arrangement. The characteristic is adjusted by varying the number of effective pieces for forming the parallel arrangement.

The inductance of a monolithic planar inductor is distributed into smaller inductor portions (L11, L21, L22, L12). The smaller inductor portions (L11, L21, L22, L12) are provided in a cascode configuration in a manner that causes inductor to function as a differential inductor device. The node (CM) between the immediate inductor portions (L21, L22 is a common-mode point of the inductor device, which is typically connected to the signal ground. The nodes (Outm,Outp) at the outer ends of the inductor portions (L12,L11 are differential outputs, e.g. output nodes of an amplifier device at the interface of the device itself and the following device (e.g. input stage of a mixer). Some of the inductor portions are arranged to be symmetrically by-passed or shortcut (S1 ) in relation to the common point in one or more steps for operation in one or more higher radio frequency band. By means of the switchable symmetric shortcut, a controllable inductance step can be provided. The common-mode signal is affected the same inductance regardless of the controlled condition.

A tunable inductor circuit is disclosed. The tunable inductor circuit includes a first inductor. The tunable inductor circuit also includes a second inductor in parallel with the first inductor. The tunable inductor circuit also includes a switch coupled to the second inductor. A resistance of the switch is added in parallel to the first inductor based on operation of the switch.

A programmable transformer incorporating windings embedded in a thin film substrate. The windings are flat wire traces embedded into the substrate, primary on one side and secondary on the other. The secondary windings may be planar or different coils spatially arrayed throughout a thickness of the substrate. The secondary winding may include multiple tap points, effectively providing multiple secondary coils referenced to the single primary coil. Each tap point is bridged to a field effect or CMOS transistor path by which a digital controls permit dynamic adjustment of the turns ratio. The final secondary output depends on the activated transistor paths. Multiple secondary outputs from a single secondary coil and a digitally programmable turns ratio are available aspects.

The current invention provides an integrated planar transformer and electronic component that includes at least one wideband planar transformer disposed in a planar substrate, where each wideband planar transformer includes a planar substrate in a fully-cured and rigid state, a ferrite material embedded in the planar substrate, where the ferrite material is enveloped in an elastic and non-conductive material, inter-wound conductors disposed around the embedded ferrite material, where top and bottom conductors are bonded by an insulating adhesive. The top and bottom conductors are connected in an inter-connected pattern by conductive vias disposed on each side of the ferrite material and span through the layers to the conductors. The planar transformer further includes at least one center tap connected to at least one inter-wound conductor. The integrated planar transformer and electronic component further includes at least one electronic component connected to at least one terminal of the wide-band planar transformer.