4,183 research outputs found
Compact modelling in RF CMOS technology
Full text linkWith the continuous downscaling of complementary metal-oxide-semiconductor (CMOS) technology, the RF performance of metal-oxide-semiconductor field transistors (MOSFETs) has considerably improved over the past years. Today, the standard CMOS technology has become a popular choice for realizing radio frequency (RF) applications. The focus of the thesis is on device compact modelling methodologies in RF CMOS. Compact models oriented to integrated circuit (ICs) computer automatic design (CAD) are the key component of a process design kit (PDK) and the bridge between design houses and foundries. In this work, a novel substrate model is proposed for accurately characterizing the behaviour of RF-MOSFETs with deep n-wells (DNW). A simple test structure is presented to directly access the substrate parasitics from two-port measurements in DNWs. The most important passive device in RFIC design in CMOS is the spiral inductor. A 1-pi model with a novel substrate network is proposed to characterize the broadband loss mechanisms of spiral inductors. Based on the proposed 1-pi model, a physics-originated fully-scalable 2-pi model and model parameter extraction methodology are also presented for spiral inductors in this work. To test and verify the developed active and passive device models and model parameter extraction methods, a series of RF-MOSFETs and planar on-chip spiral inductors with different geometries manufactured by employing standard RF CMOS processes were considered. Excellent agreement between the measured and the simulated results validate the compact models and modelling technologies developed in this work
Dynamic changes of touch- and laser heat-evoked field potentials of primary somatosensory cortex in awake and pentobarbital-anesthetized rats.
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A simple and effective process for noise reduction of multichannel cortical field potential recordings in freely moving rats.
No full textNeural and cardiac activities are altered by picomole injection of glutamate into nucleus ambiguous of the rat.
No full textNeural and cardiac activities are altered by injection of picomoles of glutamate into the nucleus ambiguus of the rat.
No full textA novel design for an RF MEMS resistive switch on PCB substrate
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Attenuation of cardiac but not vascular component in baroreflex of spontaneously hypertensive rats.
No full textAlgorithmic complexity as an index of cortical function in awake and pentobarbital-anesthetized rats.
No full textUsing 18-fluoro-2-deoxyglucose positron emission tomography in detecting infectious endocarditis/endoarteritis: A preliminary report. Academic Radiology.
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