ISSN 2250 – 1088 | © 2011 Bonfring Abstract--This paper presents a high-Q MWCNT (Multi Wall Carbon Nano-Tube) network based pulse-shaped on-chip embedded nano-inductor for power electronic circuits. This high-Q inductor is fabricated using a composite of MWCNT (multi Wall Carbon Nano Tube) network and Fe in semiconductor processing environment. A layer of nano composite film (Cu/CoFe2o4) is pat...

In current trend for portable wireless communication applications, we require high Q on-chip inductors. In this paper an on-chip 3-D spiral inductor is proposed. High quality factor is achieved by reducing oxide capacitance between substrate and conductor considering permittivity of a substrate. Losses in the structure are reduced by considering high conductivity material like copper or gold. I...

In this study investigation is done on an H-bridge switched inductor base cascade multilevel DC-DC boost converter. The proposed multilevel DC-DC boost converter topology improves the conversion efficiency of traditional topology. The proposed boost converter topology is differing from the traditional topology by the addition of switched inductor circuit. The switched inductor improved the conv...

This paper describes 3-GHz and 7-GHz tunableinductance LC-tank voltage-controlled oscillators (VCOs) implemented in 0.18-μm CMOS technology. Unlike the traditional tuning method by a varactor, a tunable inductor is employed in the VCO by using a transformer to compensate for the energy loss. The VCO facilitates the tuning frequency and low noise of the output signals, together with a variable i...

In wireless communication systems, passive elements including tunable capacitors and inductors often need high quality factor ( -factor). In this paper, we present the design and modeling of a novel high -factor tunable capacitor with large tuning range and a high -factor vertical planar spiral inductor implemented in microelectromechanical system (MEMS) technology. Different from conventional ...

This paper describes the Q enhancement of inductor or resonance circuit based on the controlled CMOS transonductance, which is applicable to either on-chip inductor or off-chip inductor. The proposed circuit configuration of high Q enhancement is evaluated for the RF transmit filter of a LTE mobile comm’s micro base station, with the Q factor of over 3000 and the capacity of 10W. A tunable filt...

This article presents a study to improve the inductance calculation of magnetic components in power converters, particular interest, case applications using variable inductors. In order increase accuracy estimation reluctance paths, several factors have been taken into consideration, such as permeability definition under saturation, temperature effect on material behavior, and distribution satu...