Characteristics of biconical microstrip antennas

Author

Lin, Y. ; Shafai, L.

Author_Institution

Dept. of Electr. & Comput. Eng., Manitoba Univ., Winnipeg, Man., Canada

fYear

1991

fDate

24-28 June 1991

Firstpage

836

Abstract

Characteristics of biconical microstrip antennas asymmetrically excited by a coaxial probe feed are studied. The antenna consists of a conducting cone cap on a grounded cone separated by an electrically thin dielectric. A study of the theta -dependent eigenvalues nu of the spherical wave functions in the omega direction has shown that there is a unique nontrivial eigenvalue for each TE (transverse electric) mode, and for the TM (transverse magnetic) modes all eigenvalues are trivial solutions. Their input impedance, bandwidth, and radiation patterns for different grounded cone angles are presented. The analysis of the conical microstrip antenna, the special case of these antennas, where the grounded core becomes a plane, predicts that their bandwidth is wider than that of similar-size planar circular disc antennas.<>

Keywords

antenna radiation patterns; eigenvalues and eigenfunctions; electric impedance; microstrip antennas; TE modes; TM modes; bandwidth; biconical microstrip antennas; coaxial probe feed; conducting cone cap; conical microstrip antenna; electrically thin dielectric; grounded cone; input impedance; radiation patterns; spherical wave functions; theta -dependent eigenvalues; Antenna feeds; Bandwidth; Coaxial components; Dielectrics; Eigenvalues and eigenfunctions; Magnetic separation; Microstrip antennas; Probes; Tellurium; Wave functions;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 1991. AP-S. Digest

Conference_Location

London, Ontario, Canada

Print_ISBN

0-7803-0144-7

Type

conf

DOI

10.1109/APS.1991.174974

Filename

174974