Design of multi-layer fractal inductor for RF applications

Abstract

Multilayered spiral inductor using fractal geometry is proposed. The proposed inductor achieves a high Q factor (Q) of 24.25 at a frequency of 19GHz with 43.5GHz as self resonant frequency (SRF). Design and EM simulations are performed by using high frequency structural simulator (HFSS) for 0.18μm TSMC technology. The results show 84.72% higher Quality factor than planar inductor with no negligible degradation in inductance value for over planar inductors. The results also show an 80% increase in SRF over planar inductor.

Design of Low Pass Filter using Integrated Fractal Passive Components for GSM Application

“…The Multilayer fractal structure achieves a higher Q factor of 30 at 6 GHz frequency and the Q factor of 22 at 2.4GHz. Table.1 shows the comparison of the standard inductors with the multilayer fractal spiral inductor [9].…”

“…This paper demonstrates the design and characterization of a 3rd order Low Pass Filter based on multilayer fractal spiral inductor and fractal spiral capacitor. Multilayer fractal spiral inductor [9] has higher inductance value over standard inductors. The improvement in the inductance value is because of inclusion of Hilbert curve which intern improves effective conductive without altering the die area.…”