Green´s Function Calculation for a Line Source Exciting a 2-D Periodic Printed Structure

Author

Paulotto, Simone ; Lovat, Giampiero ; Baccarelli, Paolo ; Burghignoli, Paolo

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Houston, Houston, TX, USA

Volume

20

Issue

4

fYear

2010

fDate

4/1/2010 12:00:00 AM

Firstpage

181

Lastpage

183

Abstract

The electromagnetic field excited by an electric line source in the presence of a printed structure periodic along two directions with arbitrary geometry of the metallization is calculated. The Array Scanning Method (ASM) is adopted to express the field excited by the aperiodic source in terms of an integral superposition of suitable auxiliary Floquet-periodic fields. The latter are solutions of electric-field integral equations that are cast in a mixed-potential formulation in the unit cell and are numerically discretized with an efficient implementation of the method of moments in the spatial domain. The accuracy of the proposed approach is validated through an independent ASM code developed for metal-strip gratings and also against consolidated analytical models available for specific strip- and patch-based periodic structures.

Keywords

Green´s function methods; antenna theory; microstrip antennas; microwave circuits; periodic structures; 2D periodic printed structure; Green´s function calculation; aperiodic source; array scanning method; auxiliary Floquet-periodic fields; electric line source; electric-field integral equations; electromagnetic field; independent ASM code; integral superposition; line source; metal-strip gratings; metallization; mixed-potential formulation; patch-based periodic structure; strip-based periodic structure; unit cell; Array scanning method (ASM); Green´s functions; near field; periodic structures; planar structures;

fLanguage

English

Journal_Title

Microwave and Wireless Components Letters, IEEE

Publisher

ieee

ISSN

1531-1309

Type

jour

DOI

10.1109/LMWC.2010.2042542

Filename

5418846