A Bidirectional Adjustable Magnetoelectric Inductor

Abstract

The invention belongs to the technical field of electronic components, and discloses a bi-directionally adjustable magnetoelectric inductor, comprising a layered magnetoelectric composite element anda copper coil uniformly wound around the periphery of the layered magnetoelectric composite element. The layered magnetoelectric composite element comprises a rectangular ferromagnetic element and a rectangular piezoelectric element, wherein the rectangular ferromagnetic element forms a sandwich-shaped symmetrical structure on the upper and lower sides of the rectangular piezoelectric element; andthe material of the rectangular ferromagnetic element is a Ga-doped nickel-zinc ferrite material, and the material of the rectangular piezoelectric element is PZT-8. Elongation or shortening of a magnetostrictive layer is caused by an additional electric / magnetic field to change the magnetic permeability so as to correspond to the increase or decrease of the inductance of a peripheral closely-wound coil, thereby realizing the bi-directional adjustability of inductance under the control of an external field, the adjustment mode is expanded and the application range of the adjustable inductanceis expanded.

Description

technical field [0001] The invention belongs to the technical field of electronic components, and in particular relates to a bidirectionally adjustable magnetoelectric inductor. Background technique [0002] As a core electronic component, tunable inductors are often packaged into oscillators, filters, and converters, and are widely used in communications, test and measurement, military, and medical electronics. Traditional mechanically adjustable inductors achieve the purpose of changing the inductance by adjusting the number of turns of the coil with a knob screw, but this contact-type manual adjustment method will introduce a series of practical problems such as large volume, noise, and additional energy consumption. Therefore, compared with traditional devices, it is more practical to develop compact tunable inductance devices with high quality factor, high stability and large adjustable amount. [0003] The magnetoelectric controllable inductor is a new type of inducta...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a two-way adjustable magnetoelectric inductor to solve the problem that the magnetoelectric adjustable inductance cannot be adjusted in two directions in the prior art, expand the adjustment method, and expand the application range of the adjustable inductance

Images