A beam switched log-periodic antenna for EMI measurement

Author

Hagiwara, Kenji ; Arai, Hiroyuki ; Izumi, Seiichi ; Tanaka, Toshiyasu

Author_Institution

Grad. Sch. of Eng., Yokohama Nat. Univ., Yokohama, Japan

fYear

2012

fDate

Oct. 29 2012-Nov. 2 2012

Firstpage

1353

Lastpage

1356

Abstract

In EMI (Electromagnetic Interference) test, the electric field intensity of radiated emission from EUT (Equipment Under Test) is measured. To find the maximum radiation by EUT, a receiving antenna is moved along a vertical pole, because the electric field intensity is seriously changed by the effect of ground reflection wave. In addition to this vertical movement, the main beam tilting is required to keep stable reception level from the EUT. A mechanical tilting is the current standard, however quick and fine adjustment is expected.

Keywords

antenna radiation patterns; electric fields; electromagnetic interference; log periodic antennas; receiving antennas; EMI measurement; EUT; beam switched log-periodic antenna; electric field intensity; electromagnetic interference test; equipment under test; ground reflection wave; main beam tilting; maximum radiation; mechanical tilting; radiated emission; receiving antenna; stable reception level; vertical movement; vertical pole; Antenna arrays; Antenna measurements; Arrays; Electromagnetic interference; Gain; Receiving antennas; Switches;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation (ISAP), 2012 International Symposium on

Conference_Location

Nagoys

Print_ISBN

978-1-4673-1001-7

Type

conf

Filename

6393795