Operation Amplifiers in EMI Filter Insertion Loss Measurement Setup

Author

Drinovsky, Jiri ; Svacina, Jiri ; Bednar, Pavel

Author_Institution

Bmo Univ. of Technol., Brno

fYear

2007

fDate

24-25 April 2007

Firstpage

1

Lastpage

3

Abstract

The paper deals with the measuring of the EMI filters insertion loss. Two variations of differential mode measurement setups are compared. Impedance transformers are used in the first setup. Active devices (operational amplifiers) were used in alternative measurement setup instead of impedance transformers. This replacement was done for the 50 Omega differential mode insertion loss measurement setup. The performance of modified measurement setup was tested on several single phase EMI filters. The obtained data were compared with data taken in the setup with impedance transformers.

Keywords

active filters; electromagnetic interference; impedance convertors; operational amplifiers; active devices; differential mode insertion loss measurement; impedance transformers; operational amplifiers; resistance 50 ohm; single phase EMI filters; Electromagnetic interference; Filters; Frequency; Impedance measurement; Insertion loss; Loss measurement; Operational amplifiers; Q measurement; Transformers; Transmitters; EMI filters; Electromagnetic compatibility; Insertion loss; Operational amplifier;

fLanguage

English

Publisher

ieee

Conference_Titel

Radioelektronika, 2007. 17th International Conference

Conference_Location

Brno

Print_ISBN

1-4244-0821-0

Electronic_ISBN

1-4244-0822-9

Type

conf

DOI

10.1109/RADIOELEK.2007.371668

Filename

4234263