Voltage-control adjustable film inductor

A technology of thin film and inductance, applied in the manufacture of inductors/transformers/magnets, piezoelectric/electrostrictive/magnetostrictive devices, circuits, etc., can solve problems such as difficulty in adjusting the inductance value, and achieve saving development costs and time, accurate The effect of impedance matching
CN1921164AInactive Publication Date: 2007-02-28UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
UNIV OF ELECTRONICS SCI & TECH OF CHINA
Publication Date
2007-02-28
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention relates to a voltage-control adjustable film inductance. Wherein, on the piezoelectric ceramic substrate, it prepares film inductance with magnetic layer; uses the inverse piezoelectric effect of piezoelectric ceramic and the inverse magnetic flexible effect of magnetic film, via external voltage, to adjust the deformation of substrate and change the magnetic conductivity of magnetic film, to adjust the inductance. The invention can be used in movable communicator, T / R element, GPS, etc.
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Description

technical field

[0001] The invention belongs to the technical field of solid electronic devices, and particularly relates to the design technology of thin film inductors, more precisely, relates to the technology of designing heterogeneous structure thin film inductors by using piezoelectric ceramics. Background technique

[0002] Inductors are widely used in many electronic devices such as filters, tuners, oscillators, impedance matching and other devices. With the development of integration and miniaturization of electronic devices and systems, thin film inductors are widely used in these micro devices. In these application fields of thin film inductors, thin film inductors with adjustable inductance characteristics play a very important role in electronic device applications. For example, an LC filter with adjustable center frequency can be constructed by using adjustable film inductors and capacitors, so that the LC filter can work at different frequencies required with...

Claims

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