Equivalent circuit analysis of an RF integrated ferromagnetic inductor

Simulation of the contribution of magnetic films on planar inductors characteristics

“…The inductor is most likely an RLC circuit. C is a distributed capacitance and corresponds to the capacitance at the conductor/substrate interface and also the capacitance between coils [10]. The previous results remain valid so far the operating range remains within a reasonable frequency band (typically here o2.5 GHz).…”

A study of patterning and annealing effects on the performance of magnetic planar inductor

“…We first use a two-port equivalent circuit model, 8,9 as shown in Fig. 2͑a͒, in which the physical parameters associated with the inductor structure can be extracted from the measurement.…”

Q‐factor improvement of integrated inductors using high aspect ratio ferromagnetic nanowires

“…First, a very thin ferromagnetic layer was placed into the core of inductor for increasing its inductance value [6], with the inconvenience that the FMR frequency is usually limited to 1 GHz [6–9]. Next, modified geometries of the ferromagnetic layer were proposed to increase the shape anisotropy field, hence the FMR frequency, and reduce simultaneously the cross‐section accessible to eddy currents: slotted [7] or wire/strip patterned [8, 10] ferromagnetic films, micro/nano patterned ferromagnetic cores [9], or nanocomposite cores made of Ni‐supported nanoporous alumina membrane [11]. In these topologies, the low amount of ferromagnetic material required to avoid eddy currents together with the attempt to increase the FMR frequency prevents an important increase of permeability [12], hence of the inductance.…”