Patent ID: 8686821
Filing Date: 2014-04-01
Classification: H01F

Abstract:
1. An inductor structure comprising: a plurality of solenoids, one of the solenoids serving as a core, the remaining solenoids being sequentially wound around the core solenoid, axes of the plurality of solenoids being substantially directed to a same direction; and at least one connecting line, each of the at least one connecting line being correspondingly connected between ends of two adjacent solenoids to serially connect the plurality of solenoids, the inductor structure being constructed in a multi-layer circuit board, wherein the axes of the solenoids are parallel to a planar direction of the multi-layer circuit board, wherein the multi-layer circuit board comprises N circuit layers and a plurality of dielectric layers located among the circuit layers, the number of the solenoids is M, and M is greater than 1 and smaller than or substantially equal to N/2, and wherein the circuit layers are sequentially arranged from a first circuit layer to an N an (i) a plurality of (a a plurality of (b a plurality of (i)