Design and analysis of annular antenna arrays with different reflectors.

Published

Journal Article

The design and performance of annular antenna arrays with reflectors is presented. Arrays with three shapes of reflectors are analysed and simulated. These include the corner reflector, the circular reflector and the elliptical reflector. Power-density distributions within the annular arrays with and without reflectors are obtained by using the FDTD method. Also, the image theory method is used to verify the FDTD results in one case. By comparing the power-density distribution pattern of all four of the array designs (three with different reflectors, one without reflector), it is readily seen in each case that the array with reflectors yields better power-efficiency than the array without reflectors and the elliptical reflector yields the best performance. Comparisons of each array are made using 4, 6 and 8 antennae in the annular array. By using the optimized results of the elliptical reflector, the requirement for the input-power level to each antenna is greatly reduced.

Full Text

Duke Authors

Cited Authors

  • Shi, G; Joines, WT

Published Date

  • September 2004

Published In

Volume / Issue

  • 20 / 6

Start / End Page

  • 625 - 636

PubMed ID

  • 15370818

Pubmed Central ID

  • 15370818

International Standard Serial Number (ISSN)

  • 0265-6736

Digital Object Identifier (DOI)

  • 10.1080/0265673032000173915

Language

  • eng

Conference Location

  • England