In this paper, Elliptical Low pass filter working at GSM band is realized using multilayer fractal spiral inductor and fractal spiral capacitor based 0.18µm process. Multilayer fractal inductor and fractal spiral capacitor is shown to have good Q factor values. The influence of fractal passive components on the insertion loss of low pass filter is analyzed by EM simulations. The designed 3.17nH multilayer inductor has a maximum Q of 30 @ 6 GHz and the realized LPF GSM/AMPS band has the insertion loss of 0.4dB and return loss of more than 15dB in the passband. General TermsMultilayer fractal inductor, GSM Applications

High-Quality factor miniaturized inductors are prerequisites of RFIC Applications. This paper presents a novel fractal stacked inductors using modified Hilbert space filling curve. The parallel stacked inductor with differential excitation improves the Q factor values. The results show more than 50% improvement in Q over conventional fractal inductors maintaining same inductance value with the same occupying area. General TermsModified Hilbert space filling curve, Radio Frequency IC's