A note on the calculation of the current distribution in lossy microstrip structures

Author

Cangellaris, Andreas

Author_Institution

Dept. of Electr. & Comput. Eng., Arizona Univ., Tucson, AZ, USA

Volume

1

Issue

4

fYear

1991

fDate

4/1/1991 12:00:00 AM

Firstpage

81

Lastpage

83

Abstract

The equations that govern the current distribution in the finite thickness conductor of a microstrip structure are developed in a rigorous manner. It is shown that the cross-sectional variation of the current density is independent of the field variation along the axis of the microstrip line only for the case when the displacement current in the conductor is negligible compared to the conduction current (a condition easily fulfilled for most practical applications) and the line is operated in the quasi-TEM mode. The validity of various methods proposed for conductor loss calculations is discussed on the basis of this analysis.<>

Keywords

current density; losses; strip lines; waveguide theory; conduction current; conductor loss calculations; cross-sectional variation; current density; current distribution; displacement current; field variation; finite thickness conductor; lossy microstrip structures; quasi-TEM mode; Attenuation; Conductors; Current density; Current distribution; Frequency; Maxwell equations; Microstrip; Transmission line theory; Ultra large scale integration; Very large scale integration;

fLanguage

English

Journal_Title

Microwave and Guided Wave Letters, IEEE

Publisher

ieee

ISSN

1051-8207

Type

jour

DOI

10.1109/75.80734

Filename

80734