Axial slot antenna on dielectric-coated elliptic cylinder

• Published in: IEEE transactions on antennas and propagation Vol. 37; no. 10; pp. 1235 - 1241
• Main Author: Richmond, J.H.
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01.10.1989; Institute of Electrical and Electronics Engineers
• Subjects: Antenna radiation patterns; Antennas; Applied sciences; Boundary conditions; Coatings; Dielectrics; Equations; Exact sciences and technology; Moment methods; Polarization; Radiocommunications; Slot antennas; Telecommunications; Telecommunications and information theory; Tellurium; Testing; Mathieu function; Slot antenna; Far field; Radiation pattern; Galerkin method; Elliptical cylinder; TM mode; TE mode; Dielectric coating; Antenna
• ISSN: 0018-926X; 1558-2221
• DOI: 10.1109/8.43531

The radiation properties of an axial slot antenna on a conducting elliptic cylinder with a homogeneous dielectric coating are investigated. In the dielectric coating and in the exterior free-space region the field is expanded in elliptic waves using the Mathieu functions. The Mathieu angular functions are employed as basis and testing functions to enforce the boundary conditions at the interface between the dielectric and the free-space regions. The equations of continuity at the boundary are solved by Galerkin's method. Numerical results are presented in graphical form for the transverse electric (TE) and transverse magnetic (TM) polarizations to illustrate the far-field radiation patterns, the gain versus coating thickness, and the aperture conductance versus coating thickness.< >