Design optimization of switchable multi-port spiral inductors

Abstract

In this paper, we develop a design optimization methodology for switchable multi-port spiral inductors in fully integrated wireless systems. The methodology simultaneously maximizes the inductor's performance for multiple inductance values and operating frequencies.We utilize multi-level optimization techniques to efficiently design the geometry of the switchable inductor structure. The methodology can produce designs with significantly larger quality factors than those obtained by optimizing the inductor design for a single inductance value and operating frequency.

A Review of Tunable Inductors for Power Electronics: Techniques and Applications

“…The major drawbacks of that method are: 1) Referring to (1), the magnetic flux intensity is proportional to the number of turns, which means that increasing the number of turns will result in a higher magnetic flux intensity for the same current value; thus, the core will saturate at lower currents, which will effectively lower the current-carrying capability of the power inductor; 2) increasing the number of turns can significantly increase the copper losses as the length of the conductor increases [26]. Although power electronic converters do not currently utilize discrete inductance control except in very rare applications, such as in [34], since it does not provide the complete control range needed to properly optimize these converters, the technology is available and has been presented in [34], [35], and [36]. The switches used can be either solid-state-based such as in [34], or mechanical based such as in [35] and [36].…”

“…Although power electronic converters do not currently utilize discrete inductance control except in very rare applications, such as in [34], since it does not provide the complete control range needed to properly optimize these converters, the technology is available and has been presented in [34], [35], and [36]. The switches used can be either solid-state-based such as in [34], or mechanical based such as in [35] and [36].…”

Design analysis of a multi-port 8-shaped inductor for RF applications

“…Furthermore, changes have been made regarding the spacing 's' between the metal tracks to improve the Inductor's performance. Regarding electrical constraints, 's' regulates the mutual magnetic coupling coefficient and the oxide coupling capacitance [14]. Maximizing the mutual magnetic coupling by minimizing 's' as 's' frees up space for broader metal line widths and helps cut down on loss.…”

Tungsten Supported Plasmonic Nanoscale Absorber for Solar Thermal Photovoltaics Applications

“…That's why, the proposed W-MMA expresses the large optical absorption window which cover the entire visible and short IRwavelengths. [91][92][93][94][95][96][97][98][99][100][101][102][103][104][105][106][107][108][109][110]. The angular robustness is the key and important feature of any meta-device.…”