Crosstalk reduction between metal-strips with subwavelength periodically corrugated structure

Author

Wu, Jin Jei ; Kao, Y.H. ; Lin, H.E. ; Yang, T.J. ; Tsai, D.C. ; Chang, Hui Joe ; Li, C.C. ; Hsieh, I.J. ; Shen, L.F. ; Zhang, X.F.

Author_Institution

Dept. of Electr. Eng., Chung Hua Univ., Hsinchu, Taiwan

Volume

46

Issue

18

fYear

2010

fDate

9/1/2010 12:00:00 AM

Firstpage

1273

Lastpage

1274

Abstract

A new kind of microstrip line on which the spoof surface plasmon polaritons (SPPs) can propagate at low frequencies (such as microwave or terahertz regime) is developed. The upper metal-strip is designed by introducing subwavelength periodically inward openings on the edges. Numerical methods are used to analyse the dispersion relation and the asymptotic frequency. It is verified that such periodically structured microstrip lines can support spoof SPPs in the frequency range between 200 MHz and 8 GHz. Compared with the quasi-TEM modes on conventional metal-strip lines, the spoof SPPs can be highly localised on the surface of the structured microstrip lines, so that the crosstalk between the different structured microstrip lines is very weak. Therefore this new kind of periodically structured microstrip line would be of great use in high density microwave circuits or high-speed systems.

Keywords

crosstalk; microstrip lines; microwave circuits; polaritons; surface plasmons; SPP; asymptotic frequency; crosstalk reduction; dispersion relation; frequency 200 MHz to 8 GHz; high density microwave circuits; high-speed systems; metal-strip lines; metal-strips; periodically structured microstrip lines; quasi-TEM modes; spoof surface plasmon polaritons; subwavelength periodically corrugated structure; subwavelength periodically inward openings;

fLanguage

English

Journal_Title

Electronics Letters

Publisher

iet

ISSN

0013-5194

Type

jour

DOI

10.1049/el.2010.1563

Filename

5567054