Accession Number:

ADP013961

Title:

Simulation of a Discrete Luneburg Lens Fed by a Conformal Printed Antenna

Descriptive Note:

Conference paper

Corporate Author:

AKADEMIYA NAUK USSR KHARKOV INST OF RADIOPHYSICS AND ELECTRONICS

Report Date:

2002-09-01

Pagination or Media Count:

4.0

Abstract:

Communications and information technology stimulate a development of various antennas. Because of their simplicity, slot fed circular microstrip antennas MA 1 seem to be attractive. Even more attractive are MAs conformally printed on curved surfaces such as spherical-circular MA SCMA because of their higher degree of freedom. However, conventional numerical methods such as Moment-Method MM or FDTD need very high computer resources and do not guarantee a convergence because of ill-conditioned matrices numerical instabilities, and vulnerability to high-Q resonances. Besides many applications need special properties agile scanning beam, multibeam capability, scanning in a large field of view, etc. Here, a very attractive candidate is a discrete Luneburg lens LL 2,3,4 which is a layered dielectric sphere. Spherical geometry of both SCMA and LL enables one to simulate them with the same method. Here, we shall use the Method of Analytical Regularization MAR 5-7 sometimes called semi-inversion method. Generally it converts a first-kind singular integral or series equation to a well-conditioned second-kind Fredholm matrix equation and therefore serves as a perfect pre-conditioner of an ill-posed problem. Then both numerical convergence and efficiency is achieved and matrix-truncation error is controlled.

Subject Categories:

  • Radiofrequency Wave Propagation
  • Electrical and Electronic Equipment
  • Numerical Mathematics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE