Dispersion characteristics of microstrip with periodic perturbations

Author

Tzuang, C.-K.C. ; Yu-Chiao Chen

Author_Institution

Inst. of Electr. Commun. Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan

Volume

3

fYear

2000

fDate

11-16 June 2000

Firstpage

1537

Abstract

Dispersion characteristics of a periodical planar microstrip line are presented in the form of Brillouin diagram together with plot of attenuation constant versus frequency. The dispersion characteristics are the results of the space harmonics deduced from the excited surface currents of the periodical structure. Rigorous theoretical methods and procedure for deembedding the space harmonics are reported and validated. The dispersion characteristics show that, in addition to the familiar forward traveling waves and backward traveling waves, a pair of complex modes is present in the stopband and the space harmonics become leaky waves when operating frequency is sufficiently high.

Keywords

Dispersion (wave); Harmonics; Microstrip lines; Periodic structures; Waveguide theory; Brillouin diagram; backward traveling waves; complex modes; deembedding; dispersion characteristics; excited surface currents; forward traveling waves; leaky waves; microstrip; operating frequency; periodic perturbations; space harmonics; Attenuation; Corrugated surfaces; Frequency; Lattices; Microstrip; Periodic structures; Planar waveguides; Space exploration; Surface impedance; Surface waves;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest. 2000 IEEE MTT-S International

Conference_Location

Boston, MA, USA

ISSN

0149-645X

Print_ISBN

0-7803-5687-X

Type

conf

DOI

10.1109/MWSYM.2000.862268

Filename

862268