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.

Using MEMS device design and fabrication techniques, liquid metal inductors (100, 200, 300) can be formed. Because of the common fabrication techniques, liquid metal inductors can be more easily integrated with certain MEMS microswitches.

The invention provides an integrated continuously tunable inductor and a method for adjusting the tunable inductor integrated in an integrated circuit. The integrated tunable inductor includes a primary inductor having a plurality of inductor turns, at least one closed loop eddy current coil proximate the primary inductor, and at least one variable resistor integrated in series with the eddy current coil. The inductance is continuously tunable across a range of inductances.

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.

A variable inductor includes a spiral inductor, a loop conductor, and a switch for opening or short-circuiting an end of the loop conductor. The loop conductor is formed in a direction perpendicular to the spiral inductor and is used for adjusting the inductance value of the spiral inductor by opening or short-circuiting the end of the loop conductor by the switch.

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.

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.