Quasi-monolithic toroidal cross-capacitor

Author

Lee, Rae Duk ; Kim, Han Jun ; Semenov, Yu.P.

Author_Institution

Korea Res. Inst. of Stand. & Sci., Daejeon, South Korea

Volume

54

Issue

2

fYear

2005

fDate

4/1/2005 12:00:00 AM

Firstpage

538

Lastpage

541

Abstract

A quasi-monolithic toroidal cross-capacitor has been developed as an extremely stable and reliable capacitance standard of 0.5 pF. A geometrically symmetrical electrode structure is realized by using two identical plated substrates produced from fused silica with an exceedingly low thermal expansion coefficient. The capacitance instability expected after finishing the aging process does not exceed 5 × 10^-8 per year. Investigations have shown that the capacitor developed for evaluation of the frequency dependence of the calculable cross-capacitor developed by Korea Research Institute of Standards and Science (KRISS), Daejeon, Korea, can be used as a substitute to maintain the capacitance unit, as well as a loss angle standard and a transfer standard to carry out intercomparisons.

Keywords

capacitance measurement; capacitors; measurement standards; 0.5 pF; Daejeon; Korea; Korea Research Institute of Standards and Science; aging process; calculable cross-capacitor; capacitance instability; capacitance measurement; capacitance unit; frequency dependence; fused silica; geometrically symmetrical electrode; loss angle standard; quasimonolithic toroidal cross-capacitor; reliable capacitance standard; stable capacitance standard; thermal expansion coefficient; transfer standard; Capacitors; Circuits; Electrodes; Finishing; Frequency dependence; Quantum capacitance; Silicon compounds; Standards development; Thermal expansion; Uncertainty; Capacitance measurement; capacitors; frequency; losses; stability;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/TIM.2004.843315

Filename

1408228