A precise two-channel digitally synthesized AC voltage source for impedance metrology

Author

Nissila, J. ; Ojasalo, Kari ; Kampik, Marian ; Kaasalainen, J. ; Maisi, V. ; Casserly, M. ; Overney, Frederic ; Christensen, A. ; Callegaro, Luca ; D´Elia, Vincenzo ; Tran, N.T.M. ; Pourdanesh, Faranak ; Ortolano, Massimo ; Kim, D.B. ; Penttila, J. ; Rosc

Author_Institution

Centre for Metrol. & Accreditation (MIKES), Espoo, Finland

fYear

2014

fDate

24-29 Aug. 2014

Firstpage

768

Lastpage

769

Abstract

A two-channel AC voltage source based on digital synthesis is reported. We present measurement results of some of the key properties at 1 kHz with applications like digital impedance bridges in mind. Measurements show that amplitude ratio of the channels has a stability (Allan standard deviation) of one part in 10⁸ for a 30 min measurement. The phase difference between the channels is also stable within 0.1 μrad.

Keywords

electric impedance measurement; stability; Allan standard deviation; digital impedance bridge; frequency 1 kHz; impedance metrology; stability; time 30 min; two-channel digitally synthesized AC voltage source; Bridge circuits; Circuit stability; Harmonic analysis; Impedance; Metrology; Optical buffering; Optical filters; Digital signal source; digital-to-analog converter; impedance bridge;

fLanguage

English

Publisher

ieee

Conference_Titel

Precision Electromagnetic Measurements (CPEM 2014), 2014 Conference on

Conference_Location

Rio de Janeiro

ISSN

0589-1485

Print_ISBN

978-1-4799-5205-2

Type

conf

DOI

10.1109/CPEM.2014.6898612

Filename

6898612