In the film type inductor, a coil is formed in the same method as the semiconductors in an integrated circuit (that is, by exposing a photosensitive film to light). Multilayer inductors are characterized by compact high performance and high reliability and are used in general RF circuits. In the case of multilayer inductors, coils are formed by printing coil patterns on non-magnetic sheets and stacking them. The wire wound type is characterized by a high Q (Quality factor) value, low DC resistance, support for large currents, and high inductance.īecause of its high Q value (a value indicating the quality of the coil), the wire wound type is particularly popular for use in peripheral antenna circuits. In a wire wound inductor, a coil is formed by winding wire around a non-magnetic core. Appearance of RF inductors (Wire wound type)

RF inductors can be categorized into three types: wire wound, multilayer, and film.įigure 1 shows what each type looks like. Types and characteristics of RF inductors

Since each inductor has its own characteristics, this article presents the characteristics of each inductor and the points to keep in mind when selecting an inductor.Ģ. Small RF inductors, which are used in the RF circuits of mobile phones and other communications equipment, can be categorized into three types depending on how they are constructed. Inductor Guide Types and Characteristics of RF (Radio Frequency) Inductors: Selecting the Optimum Components

Characteristics of radio