The exponential growth in commercial wireless and wired communication market has given rise to considerable interest in low power, low noise and low cost radio frequency integrated circuits (RFIC). Traditionally RFICs are fabricated using the expensive GaAs technologies for frequencies upto 40GHz. The development of deep sub micron CMOS technology processes allow silicon RFICs to compete with h...

Abstract This paper reports on the fabrication and characterization of high quality factor (Q) copper (Cu) inductors with thick insulator on standard silicon (Si) substrate (ρ = 10–20 cm). The thickness and the area of the insulating layer are optimized for high Q by fabricating inductors on very thick (∼50 μm) embedded silicon dioxide (SiO2) islands and 4–20 μm thick PECVD SiO2 coated standard...

The search for materials exhibiting nanoscale spiral order continues to be fuelled by the promise of emergent inductors. Although such spin textures have been reported in many materials, most them exhibit long periods or are limited operate far below room temperature. Here, real-space observation an ordered helical with a period 3.2 nm nonchiral centrosymmetric helimagnet MnCoSi at temperature ...

Statistical properties of integrated passive LC delay lines are investigated. A new variation using spiral inductors and vertical parallel plate (VPP) capacitors is introduced whose delay is primarily determined by the lateral dimensions, resulting in very accurate and repeatable delays. An MIM-based version of this line is also fabricated for comparison. Additionally, LC delay-based oscillator...

AIM To investigate the therapeutic potential for treating inner ear damage of two new steroidal alkaloid compounds, Dendrogenin A and Dendrogenin B, previously shown to be potent inductors of cell differentiation. METHODS Guinea pigs, unilaterally deafened by neomycin infusion, received a cochlear implant followed by immediate or a 2-week delayed treatment with Dendrogenin A, Dendrogenin B, a...

In this paper, we evaluate the impact of copper (Cu) passive components on RF circuit performance. A fully-differential RF Frontend is used as a test vechicle to compare the Cu 0.18 copper process with a traditional 0.25 aluminium (Al) process. The RF Front-end contains a balun and a low noise amplifier (LNA) that are designed with spiral inductors and capacitors. CMOS spiral inductor Q values ...

In this paper we evaluate the impact of copper passive components on RF circuit performance. A fully-differential RF Front-end is used as a test vehicle to compare the UMC 0.18 micron copper process with a traditional 0.25 micron aluminium process. The RF Front-end contains a balun and a low noise amplifier (LNA) that are designed with spiral inductors and capacitors. Spiral inductor Q values r...

A scalable and highly accurate RF symmetrical inductor model (with model error of less than 5%) has been developed from more than 100 test structures, enabling device performance versus layout size trade-offs and optimization up to 10 GHz. Large conductor width designs are found to yield good performance for inductors with small inductance values. However, as inductance or frequency increases, ...

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 ...

Recently this author published a paper discussing the transformation of grounded inductors to °oating inductors using operational °oating ampli ̄er (OFA) or °oating current conveyor (FCCII). The author classi ̄ed the paper as a partially review paper as stated in the abstract and in the introduction of Ref. 1 The author states in the abstract that: It is well known that a °oating inductor circuit...