Printed Aperiodic Cavity for Computational and Microwave Imaging

Okan Yurduseven, Vinay Gowda, Jonah Gollub, David Smith

Research output: Contribution to journalArticle

53 Citations (Scopus)

Abstract

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.
Original languageEnglish
Pages (from-to)367-369
JournalIEEE Microwave and Wireless Components Letters
Volume26
Issue number5
DOIs
Publication statusPublished - 14 Apr 2016

Keywords

  • Computational Imaging
  • Imaging
  • RADAR
  • Cavity Antenna
  • microwaves
  • Millimetre Wave

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