Scattering from a Finite Collection of Transverse Dipole and Axial Slot Arrays with Edge Effects
Abstract
A moment method based solution for the electromagnetic radiation and scattering from geometries composed of transverse dipole column arrays and a finite collection of axial slot arrays is developed. Each 'array' is an infinite column of periodic elements, with transverse referring to a dipole orientation perpendicular to the infinite axis and axial denoting that thin linear slots are directed along the infinite axis. The slots are mounted in infinite ground planes, which may be surrounded by an arbitrary stack of infinite lossless dielectric slabs, simulating a hybrid frequency selective radome (i.e., periodic surface) in one linear polarization, which is infinite in one dimension and finite in another. Transverse dipole arrays are used to simulate phased array antennas in a similar 'finite by infinite' model. Independent modes in scattering current expansions are defined along single columns of periodic elements, with Floquet's theorem governing the current fluctuation along the infinite axis. A coupling matrix is developed with nine sub-blocks, representing mutual admittances, mutual impedances, unitless voltage gains, and unitless current gains.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1991
- Accession Number
- ADA249622
Entities
People
- J. P. Skinner
Organizations
- Air Force Institute of Technology