Printed Aperiodic Cavity for Computational and Microwave Imaging


Journal Article

© 2016 IEEE. We demonstrate a frequency-diverse aperture for microwave imaging based on a planar cavity at K-band frequencies (18-26.5 GHz). The structure consists of an array of radiating circular irises patterned into the front surface of a double-sided printed circuit board. The irises are distributed in a Fibonacci pattern to maximize spatial diversity at the scene. The printed cavity is a phase-diverse system and encodes imaged scene information onto a set of frequencies that span the K-band. Similar to recently reported metamaterial apertures, the printed cavity imager does not require any mechanically moving parts or complex phase shifting networks. Imaging of a number of targets is shown; these reconstructed images demonstrate the ability of the system to perform imaging at the diffraction limit. The proposed printed cavity imager possesses a relatively large quality factor that can be traded off to achieve higher radiation efficiency. The general mode characteristics of the printed cavity suggest advantages when used in computational imaging scenarios.

Full Text

Duke Authors

Cited Authors

  • Yurduseven, O; Gowda, VR; Gollub, JN; Smith, DR

Published Date

  • May 1, 2016

Published In

Volume / Issue

  • 26 / 5

Start / End Page

  • 367 - 369

International Standard Serial Number (ISSN)

  • 1531-1309

Digital Object Identifier (DOI)

  • 10.1109/LMWC.2016.2548443

Citation Source

  • Scopus