33results about "Inductance without magnetic core" patented technology

A multi-layer, multi-turn structure for an inductor having a plurality of conductor layers separated by layers of insulator is described. The inductor further comprises a connector electrically connected between the conductor layers. The structure of the inductor may comprise a cavity therewithin. The structure of the inductor constructed such that electrical resistance is reduced therewithin, thus increasing the efficiency of the inductor. The inductor is particularly useful at operating within the radio frequency range and greater.

A multi-layer, multi-turn structure for an inductor having a plurality of conductor layers separated by layers of insulator is described. The inductor further comprises a connector electrically connected between the conductor layers. The structure of the inductor may comprise a cavity therewithin. The structure of the inductor constructed such that electrical resistance is reduced therewithin, thus increasing the efficiency of the inductor. The inductor is particularly useful at operating within the radio frequency range and greater.

A multi-layer, multi-turn structure for an inductor having a plurality of conductor layers separated by layers of insulator is described. The inductor further comprises a connector electrically connected between the conductor layers. The structure of the inductor may comprise a cavity therewithin. The structure of the inductor constructed such that electrical resistance is reduced therewithin, thus increasing the efficiency of the inductor. The inductor is particularly useful at operating within the radio frequency range and greater.

A multi-layer, multi-turn structure for an inductor having a plurality of conductor layers separated by layers of insulator is described. The inductor further comprises a connector electrically connected between the conductor layers. The structure of the inductor may comprise a cavity therewithin. The structure of the inductor constructed such that electrical resistance is reduced therewithin, thus increasing the efficiency of the inductor. The inductor is particularly useful at operating within the radio frequency range and greater.

On-chip integrated variable inductors, methods of making and tuning an on-chip integrated variable inductor, and design structures embodying a circuit containing the on-chip integrated variable inductor. The inductor generally includes a signal line configured to carry an electrical signal, a ground line positioned in proximity to the signal line, and at least one control unit electrically coupled with the ground line. The at least one control unit is configured to open and close switch a current path connecting the ground line with a ground potential so as to change an inductance of the signal line.

A microelectromechanical tunable inductor is formed from a pair of substantially-identically-sized coils arranged side by side and coiled up about a central axis which is parallel to a supporting substrate. An in-plane stress gradient is responsible for coiling up the coils which. The inductance provided by the tunable inductor can be electrostatically changed either continuously or in discrete steps using electrodes on the substrate and on each coil. The tunable inductor can be formed with processes which are compatible with conventional IC fabrication so that, in some cases, the tunable inductor can be formed on a semiconductor substrate alongside or on top of an IC.

A tunable transformer providing switched inductance includes a primary winding and a secondary winding. A switch is connected to the secondary winding of the transformer. At least one capacitor is also connected to the secondary winding of the transformer with the switch.

The invention relates to an MEMS adjustable suspension spiral inductor, and belongs to the technical field of a microcomputer electric device and communication. An upper electrode is arranged betweentwo segments of suspension spiral inductors, the distance between the upper electrode and a lower electrode is adjusted by controlling a driving signal between the upper electrode and the lower electrode, the magnetic flow distribution is changed by changing transverse distance and longitudinal distance between metal coils in a left-side suspension spiral inductor and a right-side suspension spiral inductor and by changing longitudinal distance between the two suspension spiral inductors and a signal transmission line, an inductance value is adjusted, and the required inductance is obtained. With the adoption of the adjustable suspension spiral inductor, the adjustable suspension spiral inductor can be compatible with other MEMS devices for fabrication and is applied to the communication field of a tunable intelligent antenna. Compared with an adjustable inductor, the adjustable suspension spiral inductor has the advantages that the structural area can be reduced, the parasitic effectis reduced, the process flow is simplified, and continuous and adjustable inductance value is achieved.

The embodiment of the invention discloses a voltage-controlled adjustable inductor which comprises a field effect transistor and an inductor coil, wherein the inductance coil consists of a conductive core body and an insulating layer; the surface of the conductive core body is wrapped by the insulating layer; the inductance coil comprises a coil part and an electrode part; the coil part is arranged in the field effect transistor; one end of the electrode part is connected with one end of the coil part; the other end of the electrode part exposes outside the voltage-controlled adjustable inductor by the electrode of the field effect transistor to form an inductance electrode; the surface of the coil part is provided with at least two contact points; the tail of the conductive core body at the position of the contact points is not covered with the insulating layer, but is covered with a first semiconductor material; the type of the first semiconductor material is as same as that of a semiconductor material of a doping region of a source electrode or a drain electrode; the contact points are positioned in a conductive channel; the number of the contact points positioned in the conductive channel is changed along with the change of the width of the conductive channel, so that the inductance amount of the adjustable inductor can be adjusted by changing the voltage of a grid electrode.

The inductor, preferably a microwave tunable inductor, includes first and second wires twisted together to define a double helix having a first end and second end with a plurality of twists therebetween. First and second terminals are at the first end of the double helix, and a connection at the second end of the double helix electrically connects the first and second wires in series. The inductance is tuned by adjusting a number of twists in the double helix, and the inductance includes a linear tuning range based upon between about 3 to 10 twist for a tuning range of about 7-12 Nanohenries. The inductor can also resonate and filter, and the double helix affords numerous advantages over conventional single helix inductors.

A coin detection antenna includes a substrate and an air core coil in a track shape including a wiring pattern provided on the substrate, and a width of an air core of the air core coil in a short-side direction is equal to or less than twice a thickness of a smallest coin having a smallest thickness of coins to be detected.

A variable inductance inductor includes an inductor unit having a coil pattern; and at least one inductance controlling unit configured to vary a contact area between the coil pattern and a moveable conductor unit to change a current path.