A fully-integrated bandpass filter using Q-enhanced and semi-passive inductors is design, implemented and verified experimentally in a standard 0.18-μm CMOS process. The inductors achieve high-Q factors by using a tapped-inductor feedback technique to produce negative resistances. Compared with conventional transformer feedback, the proposed technique not only compensates resistive losses with ...

This paper generalizes the idea of “multiple resonance networks” to energy transfers between inductors and between capacitors and inductors, extending the theory about this class of LC lossless circuits. The networks discussed have the property of transferring all the energy initially stored in a particular capacitor or inductor in an LC network to another element in the network, through a line...

In this paper, a closed-form integral representation for the eddy-current losses over a conductive substrate is presented. The results are applicable to monolithic inductors and transformers, especially when such structures are realized over an epitaxial CMOS substrate. The technique is verified against measured results from 100 MHz to 14 GHz for spiral inductors.

A single-active switch high-voltage gain non-coupled inductor DC–DC converter is presented. The introduced achieves high step-up without using any coupled inductors or transformers, provides efficiency, and has a simple control system. also low voltage stress on the diodes clamping circuits, reducing cost, conduction losses, complexity. input current of continuous with ripple, therefore suitabl...

In this paper, a novel nonisolated interleaved high step-up DC-DC converter is proposed based on the coupled inductor and voltage multiplier cell (VMC) methods. Due to structure, its input current ripple low. The low also power efficiency make suitable for renewable energy applications like photovoltaic (PV) fuel (FC) generation systems. windings of inductors are combined with VMCs further incr...

Introduction In MR Imaging the RF coupling properties of reactive components like inductors and capacitors used for building Phased Array Coils are very important. Ideally these components must have lump circuit characteristics only, without manifesting any stray radiation. These goals might appear to be contradictory since inductors and capacitors with higher inductances and capacitances respe...

This article investigates the gallium nitride based bridgeless dual single-ended primary inductor converter (SEPIC) power factor correction (PFC) with full input voltage range zero-voltage-switching (ZVS) turn- on for application of step down ac–dc converter. The operation principle Dual-SEPIC ...

Thiopurine methyltransferase (TPMT) is implicated in the metabolism of azathioprine. The consequences of differential TPMT activity induction by azathioprine on the long-term results after renal transplantation were investigated. The erythrocyte TPMT activity in 82 patients on days 0, 7, and 30 was prospectively evaluated. Because various patterns of TPMT activity variation were noted, the popu...

Step-up dc-dc converters have to cope with extremely low input voltages when used in combination with energy harvesting sources like thermogenerators, inductive generators or solar cells. The presented dc-dc converter is characterized by a high efficiency, up to 70 % in the input voltage range between 200 mV and 500 mV, and a minimum start-up voltage of 70 mV. It can deliver an output power of ...