Microelectronics

Nanoscale transistors: Device Physics, Modeling and by Mark Lundstrom

By Mark Lundstrom

The non-stop scaling of transistors within the final half century has been the driver for electronics. The channel size of the transistors in creation at the present time is less than 100nm. a large choice of units also are being explored to enrich or perhaps change silicon transistors at molecular scales. Similarities among nanoscale and micronscale transistors exist, yet nanotransistors additionally behave in greatly alternative ways. for instance, ballistic shipping and quantum results turn into even more very important. To push MOSFETs to their scaling limits and to discover units that could supplement or perhaps change them at molecular scale, a transparent figuring out of machine physics at nanometer scale is necessary.

The ebook offers an outline of the hot improvement of concept, modeling, and simulation of nanotransistors for engineers and scientists engaged on nanoscale units. easy actual photographs and semi-analytical types, which have been confirmed through exact numerical simulations, are supplied for either evolutionary and innovative nanotransistors.

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Extra info for Nanoscale transistors: Device Physics, Modeling and Simulation

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1 Phase-noise in a Single Relaxation Oscillator . . . . . . . . . . . . . . 2 Phase-noise in Quadrature Relaxation Oscillators . . . . . . . . . . . . . Conclusions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Introduction This chapter is dedicated to the study of quadrature relaxation oscillators, which consist of two cross-coupled RC relaxation oscillators [9]. In this book we will use interchangeably the designations cross-coupled relaxation oscillator and quadrature relaxation oscillator.

Relaxation Oscillator . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 High Level Model . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Circuit Implementation . . . . . . . . . . . . . . . . . . . . . . . Quadrature Relaxation Oscillator . . . . . . . . . . . . . . . . . . . . . . . 1 High Level Model . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Quadrature Relaxation Oscillator without Mismatches .

The same result can be determined for νC2 , by doing the calculations at the instants t2 and t4 of Fig. 10. , C1 = C2 ) one oscillator provides a trigger signal to the other, due to the coupling, and tries to modify the amplitude and period of the other oscillator. At the end of a transient period both relaxation oscillators will have different amplitudes but the same frequency, different from f 0 . This change of amplitude and frequency due to mismatches will be analysed in detail in the next section.

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