Radiation and scattering from arbitrary microstrip etches

Author

Kouki, B. ; Khebir, A. ; Mittra, R.

Author_Institution

Dept. of Electr. & Comput. Eng., Illinois Univ., Urbana, IL, USA

fYear

1990

fDate

7-11 May 1990

Firstpage

366

Abstract

The radiation and scattering from arbitrary microstrip etches are analyzed using the moment method in the spectral domain. For each strip segment, the currents are expanded in terms of a set of basis functions in the local tangential and normal coordinate system to easily incorporate their proper physical behavior. The known numerical difficulties associated with the dyadic Green´s function´s singularities and poor asymptotic behavior are addressed. Techniques for avoiding these singularities during the numerical integration and improving the rate of convergence of the moment method´s inner products are discussed. Models for the feeds, bends, and impedance termination of the microstrip lines are examined. Finally, representative results for both the scattering from printed circuits and the radiation from probe-fed microstrip lines are presented.<>

Keywords

Green´s function methods; antenna radiation patterns; antenna theory; electromagnetic wave scattering; microstrip antennas; strip lines; arbitrary microstrip etches; bends; dyadic Green´s function´s singularities; feeds; impedance termination; microstrip antennas; models; moment method; numerical integration; printed circuits; probe-fed microstrip lines; radiation; rate of convergence; scattering; spectral domain; Convergence of numerical methods; Etching; Feeds; Green´s function methods; Impedance; Microstrip; Moment methods; Printed circuits; Scattering; Strips;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 1990. AP-S. Merging Technologies for the 90's. Digest.

Conference_Location

Dallas, TX, USA

Type

conf

DOI

10.1109/APS.1990.115123

Filename

115123