Enhanced forward coupling phenomena between microstrip lines on periodically patterned ground plane

Author

Chin-Chang Chang ; Yongxi Qian ; Tatsuo Itoh

Author_Institution

Dept. of Electr. Eng., California Univ., Los Angeles, CA, USA

Volume

3

fYear

2001

fDate

20-24 May 2001

Firstpage

2039

Abstract

Strong forward coupling and slow-wave effects have been observed between two parallel microstrip lines on a periodically patterned ground plane, even though the two lines are separated with very large gap spacing. The even- and odd-mode effective dielectric constants have been calculated using the FDTD method to investigate this phenomenon. The slow-wave effects and enhanced coupling will help in the design of forward-wave directional couplers with reduced line lengths and relaxed gap spacing requirements.

Keywords

microstrip directional couplers; periodic structures; slow wave structures; effective dielectric constants; enhanced forward coupling phenomena; forward-wave directional couplers; gap spacing requirements; line lengths; parallel microstrip lines; periodically patterned ground plane; slow-wave effects; Couplings; Dielectric constant; Dielectric measurements; Dielectric substrates; Directional couplers; Finite difference methods; Frequency; Microstrip; Optical attenuators; Periodic structures;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest, 2001 IEEE MTT-S International

Conference_Location

Phoenix, AZ, USA

ISSN

0149-645X

Print_ISBN

0-7803-6538-0

Type

conf

DOI

10.1109/MWSYM.2001.967312

Filename

967312