Full-wave analysis of aperture-coupled microstrip lines

Author

Herscovici, Naftali ; Pozar, David M.

Author_Institution

Dept. of Electr. & Comput. Eng., Massachusetts Univ., Amherst, MA, USA

Volume

39

Issue

7

fYear

1991

fDate

7/1/1991 12:00:00 AM

Firstpage

1108

Lastpage

1114

Abstract

Two methods are presented for the analysis of aperture-coupled microstrip lines. Assuming a quasi-transverse electromagnetic traveling wave incident on the feeding line, an expression for the wave on the coupled line is derived. First, the moment method is used and the current on the coupled line is represented by a traveling wave propagating away from the slot. In the second method, the reciprocity theorem is applied to the coupled line. Both the moment method and the reciprocity method make use of the exact Green functions and produce results that are in very close agreement. An equivalent circuit is derived and the S-parameters are computed. Theoretical results are verified with measurements

Keywords

coupled circuits; strip lines; transmission line theory; S-parameters; aperture-coupled microstrip lines; equivalent circuit; exact Green functions; full-wave analysis; measurements; moment method; quasi transverse EM wave; reciprocity method; reciprocity theorem; Apertures; Coupling circuits; Equivalent circuits; Feeds; Geometry; Integral equations; Microstrip components; Moment methods; Planar arrays; Scattering parameters;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.85376

Filename

85376