SAMSUNG ELECTRO-MECHANICS CO., LTD. (Suwon-si, KR)

An inductor is an enclosure in which several layers of insulation comprising a number of coil patterns disposed over the plurality of layers of insulation are placed; and the first and second electrodes placed on the exterior of the body, wherein the body also has an opening for a through-hole and at least one part of an inner portion of the array of coil patterns are exposed to the outside through the through-hole.

Recently, in smartphones, signals in multiple frequency bands are used due to the application of multi-band long term evolution (LTE). As a result, a high frequency inductor is used extensively in impedance matching circuits in a signal transmissionand reception RF system. High frequency inductors should be compact and possess high capacity. Furthermore, it is required that the high frequency inductor be equipped with self-resonant frequencies (SRF) within a high frequency band and low resistivity that can be used at a frequency of 100 MHz or higher. Further features with high Q are necessary to decrease loss at the frequency of operation.

An aspect of the present disclosure may result in an inductor with the capability of implementing the highest self resonant frequency (SRF) and high Q characteristics.

A feature of the present disclosure states that an inductor could comprise: A body containing a plurality insulating layer with a plurality if coil patterns each disposed on the layers of insulation and second and first exterior electrodes situated on the exterior part of the body. The through-hole exposes at most one of the surfaces of plurality the coil patterns.

Another aspect of this disclosure states that an inductor can include an inductor body that contains multiple layers of insulating material with several coil patterns that are each placed over the plurality insulating layer; andfirst- and second-external electrodes disposed on the exterior surface of the body. The through-hole may be insulated by a material in it. A minimum of one part of the number of coil patterns’ inner surface is exposed by the through-hole’s insulation.

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