Inductor capable of realizing tristate nonvolatile modulation and modulation method thereof

A non-volatile, inductive technology, used in the manufacture of inductors/transformers/magnets, inductors, fixed inductors, etc., can solve problems such as the decline of amorphous soft magnetic alloy strips, the disappearance of modulation effects, and the decline of inductance. Achieve the effect of light weight, small size and energy saving

Active Publication Date: 2015-05-06
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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Problems solved by technology

When a voltage is applied to the PZT, the strain generated by the PZT will cause the magnetic permeability of the amorphous soft magnetic alloy strip to decrease under the influence of the stress, resulting in a decrease in the overall inductance, with a difference of more than 4 times between the maximum and minimum inductance

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  • Inductor capable of realizing tristate nonvolatile modulation and modulation method thereof
  • Inductor capable of realizing tristate nonvolatile modulation and modulation method thereof
  • Inductor capable of realizing tristate nonvolatile modulation and modulation method thereof

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Embodiment Construction

[0028] An inductor capable of realizing tri-state non-volatile modulation, comprising polycrystalline PZT ceramic substrates, metal electrodes, amorphous soft magnetic alloy strips and enameled wires, characterized in that the polycrystalline PZT ceramic substrates contain defective A polycrystalline PZT ceramic substrate with dipoles, the polycrystalline PZT ceramic substrate containing defective dipoles is prepared by acceptor doping in the process of preparing PZT ceramics, and oxygen vacancies are generated inside the ceramics, and oxygen vacancies and doped The heteroions form defect dipoles, which are then obtained through polarization and aging treatments.

[0029] An inductor capable of realizing tri-state non-volatile voltage pulse modulation, its preparation method and inductance regulation method are as follows:

[0030]Step 1: The polycrystalline PZT ceramic substrate containing defective dipoles adopts a piezoelectric ceramic substrate customized from the Shanghai...

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Abstract

The invention provides an inductor capable of realizing tristate nonvolatile modulation and a modulation method of the inductor for realizing thee different inductance values, and belongs to the technical field of electronic devices. The inductor capable of realizing the tristate nonvolatile modulation comprises a polycrystal PZT (Pb-Zr-Ti) ceramic substrate which comprises a defect dipole, a metal electrode, a noncrystal soft magnetic alloy strip magnetic film and an enamelled wire, wherein the polycrystal PZT ceramic substrate which comprises the defect dipole is obtained in a manner that the polycrystal PZT ceramic substrate is subjected to polarization and ageing processing after being subjected to acceptor doping. Voltage pulse is applied to an upper electrode and a lower electrode of the PZT substrate, and a transition state of three types of nonvolatility is generated in the noncrystal soft magnetic alloy strip magnetic film after external voltage is removed so as to regulate the inductance value. The modulation method has the advantages of simpleness in operation, good performance and low energy consumption and has a wide application prospect in filtering, tuning, impedance matching and other functional electronic circuit systems which need to be realized by the inductor.

Description

technical field [0001] The invention belongs to the technical field of electronic devices, and in particular relates to an inductor capable of realizing tri-state non-volatile voltage pulse modulation and a preparation method thereof. The system has wide application prospects. Background technique [0002] As one of the three basic passive electronic components, inductors play an important role in modern electronic circuit systems. With the continuous development of electronic technology, inductors widely used in aerospace, power electronics, voltage-controlled oscillators, filters, impedance matching networks and other fields need to have a certain amount of adjustable inductance to meet the requirements of the electronic machine system. The development needs in the direction of miniaturization, low power consumption, multi-function and high performance. [0003] At present, the methods of regulating inductance mainly include the following categories: discrete type, metal...

Claims

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Application Information

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IPC IPC(8): H01F37/00H01F27/24H01F1/153C04B35/491H01F41/00
Inventor 唐晓莉张肇吉苏桦荆玉兰钟智勇张怀武
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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