Coherent Detection of Orbital Angular Momentum in Radio

Abstract

The angular momentum propagated by a beam of radiation has two contributions: spin angular momentum (SAM) and orbital angular momentum (OAM). SAM corresponds to wave polarisation, while OAM-carrying beams are characterized by a phase which is a function of azimuth. We demonstrate experimentally that radio beams propagating OAM can be generated and coherently detected using ordinary electric dipole antennas. The results presented here could pave the way for novel radio OAM applications in technology and science, including radio communication, passive remote sensing, and new types of active (continuous or pulsed transmission) electromagnetic measurements.

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Document Details

Document Type
Technical Report
Publication Date
Aug 31, 2014
Accession Number
ADA627259

Entities

People

  • B. Isham
  • J. E. Bergman
  • K. Forozesh
  • L. K. Daldorff
  • M. K. Al-nuaimi
  • S. M. Mohammadi
  • T. D. Carozzi

Organizations

  • University of Puerto Rico

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Angular Momentum
  • Antenna Arrays
  • Antennas
  • Arrays
  • Dipole Antennas
  • Electric Fields
  • Electromagnetic Radiation
  • Magnetic Fields
  • Momentum
  • Orbital Angular Momentum
  • Radiation
  • Radiation Patterns
  • Radio Beams
  • Radio Communications
  • Remote Sensing
  • Spin Angular Momentum
  • Total Angular Momentum

Fields of Study

  • Physics

Readers

  • Quantum spin resonance or Electron Paramagnetic Resonance spectroscopy.
  • Radar Systems Engineering.

Technology Areas

  • Space