By Jaime Aguilera
Meant for engineers who're beginning out within the layout of built-in inductors, this booklet describes the total layout circulate, uncomplicated choice of the geometry and optimisation of the standard by way of remodeling the geometry, size and de-embedding and characterisation.
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Additional resources for Design and Test of Integrated Inductors for RF Applications
The result has been very poor mainly due to the low quality factor of the integrated inductors. Thus there is a strong motivation for the implementation of high quality inductors. Figure 1-12 shows the typical configuration for a low-pass filter implemented with inductors and and capacitors and Some implementations can be found in [Nguy90, Kim02]. 3. THE CHALLENGE OF INTEGRATING HIGH QUALITY INDUCTORS In this section we are going to explain why the quality factor of the integrated passive elements is critically determined by the characteristics of the substrate and the metallization of the technology in which they are implemented.
Accounts for the magnetic field generated by the substrate. This field is a consequence of the induced currents within the substrate and confined in a close loop. This magnetic field opposes to the original field. represents the substrate ohmic losses due to the currents being induced in the substrate. 3 Wideband model In [Pino02] it is derived a modification of the model. Its major advantage from other models is that permits the characterization of an inductor over a wider range of frequencies.
2. SPIRAL INDUCTORS ON SILICON BASED TECHNOLOGIES Once explained the different conventional and non-conventional fabrication options for the integration of an inductor, this section describes in detail the spiral inductors built on a silicon substrate. Design and test of integrated inductors for RF applications 29 The section begins analyzing the electromagnetic effects induced by these inductor geometries, and reviewing some of the most up to date electrical models used to characterize their behavior in the frequency range of GHz.