Read e-book online Charge Pump Circuit Design PDF

By Feng Pan

Cost pumps are discovering elevated realization and assorted utilization within the new period of nanometer-generation chips utilized in various structures. This ebook explains the various architectures and standards for a good cost pump layout and explains every one step intimately. it is full of additional hands-on layout details, strength pitfalls to prevent, and useful rules harnessed from the authors' wide event designing cost pumps.

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99) yields 1 h1 h2 ∂ h2 ∂ ∂ h1 ∂ + ∂u h1 ∂u ∂v h2 ∂v + p2 Hz = 0. 105) These are scalar equations for Ez and Hz . 105) as Ez = 0. 106) ∇2t + p2 Hz The transverse Laplacian ∇2t in curvilinear coordinates is given by ∇2t = 1 h1 h2 ∂ h1 ∂ ∂ h2 ∂ + ∂u h1 ∂u ∂v h2 ∂v . 103), all transverse field components, Eu , Ev , Hu , and Hv , of a wave propagating in a simple medium ( , µ) along a straight line path in 2 Fundamental Electromagnetic Field Equations 37 the z-direction can be obtained from the longitudinal axial fields (Ez , Hz ).

182) ω=ω 0 This group velocity is the velocity at which this wave packet (or signal) propagates down the guide. 8 The Impedance Concept [31] Conventional transmission line analysis on distributed circuits predates the development of field analysis of waveguiding structures. The familiarity and simplicity of the circuit based transmission line theory therefore provide the impetus to seek an equivalent transmission line analogy for the more complex waveguiding structures whenever possible. For example, the guidance on a conventional transmission line is described by a characteristic impedance Zc and a propagation constant β.

The index of refraction in such a metamaterial medium is also negative. The permittivity and the permeability of the medium are usually frequency dependent and lossy. In other words, they are complex quantities. 28) 2 Fundamental Electromagnetic Field Equations 17 where σ, a scalar constant for most conducting materials, is called the conductivity, in units of mhos per meter. 11). In a conducting medium (σ = 0), there can be no permanent distribution of free charges, because any free charge will diffuse out of the conducting medium and reside on the surface.

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