A theoretical and experimental study of mutual coupling in microstrip antenna arrays

Author

Mohammadian, Alireza H. ; Martin, Noel M. ; Griffin, Donald W.

Author_Institution

Dept. of Electr. & Comput. Eng., Michigan Univ., Dearborn, MI, USA

Volume

37

Issue

10

fYear

1989

fDate

10/1/1989 12:00:00 AM

Firstpage

1217

Lastpage

1223

Abstract

Each microstrip antenna element in the array is replaced by an equivalent magnetic current source distribution over a grounded dielectric slab derived from the electric field on the walls of the element as given by the cavity model. A dyadic Green´s function is developed for a grounded dielectric slab, using the rectangular vector wave functions. The function is used to calculate the magnetic field due to the magnetic current distributions. The formula for mutual impedance based on the reaction concept is used to calculate the mutual coupling in arrays of antenna elements. Some measurements have been conducted for mutual coupling between two rectangular patches in the C-band. Calculated results are in excellent agreement with measurements, including those of other authors

Keywords

Green´s function methods; microstrip antennas; microwave antenna arrays; C-band; cavity model; dyadic Green´s function; electric field; equivalent magnetic current source distribution; grounded dielectric slab; magnetic field; microstrip antenna arrays; mutual coupling; mutual impedance; rectangular patches; rectangular vector wave functions; Antenna measurements; Current distribution; Dielectrics; Green´s function methods; Magnetic field measurement; Microstrip antenna arrays; Microstrip antennas; Mutual coupling; Slabs; Wave functions;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/8.43529

Filename

43529