Two antenna capacitance problems a re solved in this paper. The motivating problem was to determine the capacitance of a biconical antenna of circular cross section immersed in a magneto-ionic medium. This is solved by reducing it to the secondary problem of determining the capacitance of a biconical antenna of elliptic cross section in an isotropic medium. The latter is solved using the sphero...

A reconstruction technique of the gate capacitance from anomalous capacitance-voltage (C–V) curves in high leakage dielectric MOSFETs is presented. An RC network is used to accommodate the distributed nature of MOSFETs and an optimization technique is applied to extract the intrinsic gate capacitance. Applicability of the method is demonstrated for ultra-thin nitride/oxide (N/O 1.4 nm/0.7 nm) c...

Models for distributed capacitance in a thin lm are derived in the form of a system of local RC diiusion equations coupled by a global elliptic equation. Such models contain the local geometry of the distributed capacitance on which charge is stored and the exchange of current ux on its interface with the medium. Certain singular limits are characterized, and the resulting degenerate initial-bo...

Outer hair cells (OHC) from the organ of Corti are capable of fast voltage-induced length changes (Santos-Sacchi and Dilger, 1988), suggesting that an associated voltage sensor should reside in the OHC plasma membrane. Voltage-dependent mechanical responses and nonlinear charge movement of isolated OHCs from the guinea pig were analyzed using the whole-cell voltage-clamp technique. Ionic curren...

A capacitor is formed when a level-sensing electrode is installed in a vessel. The metal rod of the electrode acts as one plate of the capacitor and the tank wall (or reference electrode in a non-metallic vessel) acts as the other plate. As the level of the material being measured rises, the air or gas normally surrounding the electrode is displaced by the material’s different dielectric consta...

This paper presents a new CAD tool – F3D – for accurate 3D capacitance and distributed RC model extraction for image sensor designs. F3D overcomes limitations of existing parasitic extraction tools and field solvers, and enables a predictive accurate capacitance extraction and distributed RC model generation, automated identification of all relevant capacitive coupling components, including lon...

The gate-drain capacitance and the sourcedrain capacitance of High Electron Mobility transistors have been measured on a computer-aided measurement system. The variation of these capacitances with transistor bias voltages is explained and compared with the trend predicted by a capacitance model used in literature. Differences in measured and calculated results arise from the assumptions used in...

Ferroresonance is a nonlinear dynamic phenomenon, between a non-linear inductor and system capacitance. Hereby a study is undertaken on systems comprising of the required parameters, under which the possibility of ferroresonance may arise. For any operating voltage applied to series combination of capacitance and transformer windings at no-load, the critical value of capacitance to cause ferror...

InAs-based heterostructure barrier varactor (HBV) diodes with In0.3Al0.7As0.4Sb0.6 as the barrier material are demonstrated. Current–voltage and capacitance–voltage characteristics, as well as S-parameters, of HBV diodes with varying barrier thicknesses are examined. Maximum capacitance values and maximum-to-minimum capacitance ratios greater than those predicted by traditional HBV models were ...