Orbital Angular Momentum Antennas: Understanding Actual Possibilities Through the Aperture Antennas Theory

Abstract

We propose a simple method based on the Aperture Antennas Theory to understand in a simple fashion limitations of OAM antennas in far-field links. Additional insight is also given by analyzing the properties of the operators relating source and far-field distributions for a given order of the vortex. The outcomes fully agree with the results recently achieved by Edfors, Craeye, and co-authors, and emphasize some additional draw-back. The "degrees of freedom" of the fields associated to the different orders of the vortices are also discussed.

arXiv comment11 pages, 4 figures

References in corpus (4)

• Comment on 'Encoding many channels on the same frequency through radio vorticity: first experimental test'
• Further Comment on 'Encoding many channels on the same frequency through radio vorticity: first experimental test'
• A New Approach to the Link Budget Concept for an OAM Communication Link
• OAM multiple transmission using uniform circular arrays: numerical modeling and experimental verification with two digital television signals

Cited by in corpus (5)

• Ultra-wideband Reflection-type Metasurface for Generating Integer and Fractional Orbital Angular Momentum
• Effective Non-Iterative Phase Retrieval of 2-D Bandlimited Signals with Applications to Antenna Characterization and Diagnostics
• Reflector Antennas Characterization and Diagnostics using a Single Set of Far Field Phaseless Data and Crosswords-like Processing
• Communicating Using Spatial Mode Multiplexing: Potentials, Challenges and Perspectives
• Multiplexing schemes for optical communication through atmospheric turbulence