Study of radiated emissions from PCB with narrow ground plane

Author

Ooi, T.H. ; Tan, S.Y. ; Li, H.

Author_Institution

Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore

fYear

1999

fDate

1999

Firstpage

552

Lastpage

555

Abstract

Printed circuit boards (PCB) with narrow ground plane microstrip structure (PCBNGP) find many applications in electronic equipment. In this paper, various PCBNGP with different parameters were fabricated and their radiation was measured. It was found that narrow ground plane increases radiation and common-mode current is the main source of radiation. From the method of moments (MoM), it was found that the PCB structure asymmetry is the main source of the common-mode current. By treating the reference point (at infinity) as a conductor, multiconductor transmission line (MTL) model was developed to simulate radiation from PCBNGP and several factors affecting the radiation were extracted

Keywords

electric noise measurement; electromagnetic interference; method of moments; multiconductor transmission lines; printed circuit testing; EM radiation increase; PCB; PCB structure asymmetry; common-mode current; electronic equipment; method of moments; multiconductor transmission line model; narrow ground plane microstrip structure; radiated EMI; radiated emissions; Antenna measurements; Conductors; Electromagnetic interference; Electromagnetic radiation; Frequency measurement; H infinity control; Message-oriented middleware; Microstrip; Transmission line measurements; Transmission lines;

fLanguage

English

Publisher

ieee

Conference_Titel

Electromagnetic Compatibility, 1999 International Symposium on

Conference_Location

Tokyo

Print_ISBN

4-9980748-4-9

Type

conf

DOI

10.1109/ELMAGC.1999.801387

Filename

801387