An active filter for Delta-Sigma modulated Josephson waveforms

Author

Bergsten, Tobias ; Eklund, Gunnar ; Tarasso, Valter ; Rydler, Karl-Erik

Author_Institution

SP Tech. Res. Inst. of Sweden, Boras, Sweden

fYear

2014

fDate

24-29 Aug. 2014

Firstpage

518

Lastpage

519

Abstract

We present an active low pass filter constructed for Delta-Sigma modulated Josephson waveforms. The filter has a fifth order Butterworth characteristic with high input impedance and stable passband performance, including dc. We present results from frequency response, input impedance characteristics, passband ac-dc measurements and spectra of a Delta-Sigma modulated sine wave from a programmable Josephson voltage standard.

Keywords

Butterworth filters; Josephson effect; active filters; delta-sigma modulation; frequency response; low-pass filters; measurement standards; voltage measurement; active low pass filter; delta-sigma modulated Josephson waveforms; delta-sigma modulated sine wave; fifth order Butterworth characteristic; frequency response; input impedance characteristics; passband ac-dc measurements; programmable Josephson voltage standard; Frequency measurement; Frequency response; Impedance; Impedance measurement; Noise; Passband; Standards; Active filters; Josephson voltage standards; analog circuits; harmonic distortion; low pass filters;

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.2014.6898487

Filename

6898487