A ratio transformer bridge for the measurement of low-loss tangents

Author

Kwaaitaal, Th. ; van den Eijnden, W.M.M.M.

Author_Institution

Dept. of Electr. Eng., Eindhoven Univ. of Technol., Netherlands

fYear

1990

fDate

13-15 Feb 1990

Firstpage

20

Lastpage

26

Abstract

The authors discuss the architecture of transformer ratio bridges for measuring the loss angles of low-loss dielectrics and describe the development of a sensitive and accurate bridge, capable of measuring loss angles with a sensitivity of 1×10^-8 (S/ N=1 at a detector bandwidth of 1 Hz) and an accuracy of a few parts in 10^-7. The bridge is computer controlled and has an automatic capacitive balance. Its main characteristics and their influence on sensitivity and accuracy are discussed. As an example, measurements as functions of temperature and frequency are presented

Keywords

bridge instruments; computerised instrumentation; dielectric loss measurement; loss-angle measurement; accuracy; automatic capacitive balance; computer controlled bridge; low-loss dielectrics; measurement of low-loss tangents; ratio transformer bridge; sensitivity; transformer ratio bridges; Automatic control; Bandwidth; Bridges; Detectors; Dielectric loss measurement; Dielectric losses; Dielectric measurements; Frequency measurement; Goniometers; Loss measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Instrumentation and Measurement Technology Conference, 1990. IMTC-90. Conference Record., 7th IEEE

Conference_Location

San Jose, CA

Type

conf

DOI

10.1109/IMTC.1990.65951

Filename

65951