Accession Number:

AD1053781

Title:

Design and Analysis of a Retroreflective Array for IR Application

Descriptive Note:

Technical Report

Corporate Author:

AIR FORCE INSTITUTE OF TECHNOLOGY WRIGHT-PATTERSON AFB OH WRIGHT-PATTERSON AFB United States

Personal Author(s):

Report Date:

2016-03-01

Pagination or Media Count:

79.0

Abstract:

This research investigates the adaptation of a Van Atta style of retrodirective array designed to work at 2 GHz to work in the infrared spectrum of 8-12 micrometer centered at 30 THz. The Computational Research and Engineering Acquisition Tools and Environments CREATE software suite and high performance computing HPC resources of the HPC Modernization program were utilized to model and simulate multiple steps of an adaptation process to illustrate and examine the incremental performance changes of frequency scaling the design. Two different substrate materials, germanium and hafnium oxide, are evaluated as the dielectric materials, and a comparison of the broadband performance of scaled designs using both dielectric materials shows that hafnium oxide provides better performance than germanium for this application. In addition, both gold and aluminum are evaluated for use in scaled designs. The results suggest that the cost savings and oxide bonding benefits of aluminum outweigh the slight performance advantage of gold. The Van Atta array concept is adaptable to IR wavelengths and microfabrication. Improved final broadband performance of the scaled design is a factor of approximately three and a half better than the 2 GHz design.

Subject Categories:

  • Radiofrequency Wave Propagation
  • Electricity and Magnetism

Distribution Statement:

APPROVED FOR PUBLIC RELEASE