Laminated inductor

Abstract

The invention discloses a laminated inductor. The laminated inductor comprises a laminating body, wherein at least the printing conducting slurry on the uppermost insulator layer in the three uppermost insulator layers of the laminating body forms n upper plane electrodes; the upper plane electrodes are alternatively arranged; insulating separating sheets are arranged at the cross positions; at least the printing conducting slurry on the lowermost insulator layer in the three lowermost insulator layers of the laminating body forms (n-1) lower plane electrodes; the lower plane electrodes are alternatively arranged; insulating separating sheets are arranged at the cross positions; 2(n-1) through holes are respectively formed in the two ends, corresponding to the lower plane electrodes, of the insulator layers except for the insulator layers with the plane electrodes; after conducting slurry laminates are coated, 2(n-1) through hole electrodes are formed; and a coil electrode is formed by connecting the upper plane electrodes, the through hole electrodes and the lower plane electrodes. The laminated inductor has relatively high Q value under each frequency, and the Q value is relatively convenient to increase and improve.

Description

technical field [0001] The invention relates to an inductance device, in particular to a laminated inductor. Background technique [0002] Multilayer inductors are often used in impedance matching or resonant circuits in radio frequency circuits (signal frequencies above 1 GHz). When selecting a multilayer inductor, in addition to the inductance parameter, the quality factor (Quality Factor, Q for short) parameter also needs to be considered. The Q value is the main parameter to measure the inductance device. It refers to the ratio of the stored energy to the consumed energy when the inductor works under an AC voltage of a certain frequency. It is expressed as the inductive reactance (the imaginary part of the impedance) and its equivalent loss. The ratio of resistances (real parts of impedance). The higher the Q value of an inductor, the smaller its losses and the higher its efficiency. [0003] like figure 1 Shown is the equivalent circuit diagram of a laminated induct...

AI Technical Summary

Problems solved by technology

However, for figure 2 As shown in the laminated inductance, the larger thickness and width of the electrode 201 will lead to the increase of the parasitic capacitance C (Q reduction) and the problem of product cracking, and the design of the electrode 201 close to the side edge of the laminate 202 will easily lead to leakage of the side 202 electrode , cracking problem, thus limiting the range of induct...

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