Form and Capacitance of Parallel-Plate Capacitors
نویسندگان
چکیده
AbstructIn basic electrostatics, the formula for the capacitance of parallel-plate capacitors is derived, for the case that the spacing between the electrodes is very small compared to the length or width of the plates. However, when the separation is wide, the formula for very small separation does not provide accurate results. In our previously published papers, we use the boundary element method (BEM) to derive formulas for the capacitance of strip and disk capacitors that are applicable even when the separation is large. In this paper, we present results and formulas for the capacitances of square and rectangular capacitors.
منابع مشابه
Rough Electrode Creates Excess Capacitance in Thin-Film Capacitors
The parallel-plate capacitor equation is widely used in contemporary material research for nanoscale applications and nanoelectronics. To apply this equation, flat and smooth electrodes are assumed for a capacitor. This essential assumption is often violated for thin-film capacitors because the formation of nanoscale roughness at the electrode interface is very probable for thin films grown via...
متن کاملCapacitance of Disk Capacitors
The capacitance of a parallel plate capacitor is formulated in basic electrostatics, assuming that the separation between the two electrode plates is very narrow and the fringe field of the edges is negligible. However, in practical problems of electrical and electronic engineering there are many cases where the plate separation is wide and the fringe field effect cannot be neglected. In our pr...
متن کاملEffects of the Particle Size and the Solvent in Printing Inks on the Capacitance of Printed Parallel-Plate Capacitors
Parallel-plate capacitors were fabricated using a printed multi-layer structure in order to determine the effects of particle size and solvent on the capacitance. The conductive-dielectric-conductive layers were sequentially spun using commercial inks and by intermediate drying with the aid of a masking polymeric layer. Both optical and scanning electron microscopy were used to characterize the...
متن کاملDesign and Modeling of a Micromachined High-Q Tunable Capacitor With Large Tuning Range and a Vertical Planar Spiral Inductor
In wireless communication systems, passive elements including tunable capacitors and inductors often need high quality factor ( -factor). In this paper, we present the design and modeling of a novel high -factor tunable capacitor with large tuning range and a high -factor vertical planar spiral inductor implemented in microelectromechanical system (MEMS) technology. Different from conventional ...
متن کاملCarbon Nanotube Capacitors
Capacitors are important components in many integrated circuits. They serve numerous roles in analog and mixed signal circuits, including switched capacitor filters and sampleand-hold circuits. In addition, capacitors provide a vital role in the decoupling of microprocessors, digital signal processors, and microcontrollers from power supply variations. Traditional integrated circuit capacitors ...
متن کامل