ANALYSIS AND DESIGN OF DIELECTRIC ROD MILLIMETRIC LEAKY-WAVE ANTENNAS
Mohammed Assem Mohammed EI-Muslimany;
Abstract
Mohammed As em Mohammed El-Muslimany, Analysis and Design of Dielectric Rod Millimeteric Leaky-Wave Antennas, A Dissertation Submitted to the Electronics and Communications Department, Facuity Of Engineering, Ain Shams University For the Degree of Doctor of Philosophy, 1998.
Dielectric rod leaky-wave antennas may have applications in the
millimeter wave band, for example as omni-directional antennas in the plane normal to the axis , as flush mounted antennas using its symmetry plane along the axis and as frequency scanning antennas with a cone shaped beam. TE, TM and hybrid leaky modes may provide radiation
with ¢-,B-, linear, and circular polarization.
The present work is concerned with the analysis, design and measurement of the antenna consisting of a circular cylindrical dielectric rod covered with. periodic circular conducting strips, for TE, TM and hybrid leaky modes. The method of analysis is based on expanding the mode fields in terms ofFloquet's harmonics.
A moment method solution (Galerkin's method) is used to solve for
the strip currents and/or the slot fields and the complex propagation constant. The choices of the unknown field or current components depends on the propagating mode to obtain numerical convergence. The radiated fields are obtained from fields on the rod surface using Kirchhoff-Huygens radiation formula.
The effects of the different parameters on the angle of the main beam and the attenuation constant are investigated. Such parameters include the frequency, the rod radius. the dielectric constant, the period length and the strip width.
Dielectric rod leaky-wave antennas may have applications in the
millimeter wave band, for example as omni-directional antennas in the plane normal to the axis , as flush mounted antennas using its symmetry plane along the axis and as frequency scanning antennas with a cone shaped beam. TE, TM and hybrid leaky modes may provide radiation
with ¢-,B-, linear, and circular polarization.
The present work is concerned with the analysis, design and measurement of the antenna consisting of a circular cylindrical dielectric rod covered with. periodic circular conducting strips, for TE, TM and hybrid leaky modes. The method of analysis is based on expanding the mode fields in terms ofFloquet's harmonics.
A moment method solution (Galerkin's method) is used to solve for
the strip currents and/or the slot fields and the complex propagation constant. The choices of the unknown field or current components depends on the propagating mode to obtain numerical convergence. The radiated fields are obtained from fields on the rod surface using Kirchhoff-Huygens radiation formula.
The effects of the different parameters on the angle of the main beam and the attenuation constant are investigated. Such parameters include the frequency, the rod radius. the dielectric constant, the period length and the strip width.
Other data
| Title | ANALYSIS AND DESIGN OF DIELECTRIC ROD MILLIMETRIC LEAKY-WAVE ANTENNAS | Other Titles | تحليل وتصميم هوائيات القضيب العازل المتسربة فى الموجات المليمترية | Authors | Mohammed Assem Mohammed EI-Muslimany | Issue Date | 1998 |
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