Generation of radio orbital angular momentum (OAM) waves with circular metallic waveguide

W.L. Wei (1) , K. Mahdjoubi (1) , C. Brousseau (1) , O. Emile (2)

1 IETR - Institut d'Electronique et de Télécommunications de Rennes
2 URU 435 LPL - URU 435 Laboratoire de physique des lasers

We present a novel way to generate radio waves bearing Orbital Angular Momentum (OAM) in the horn antenna by using a circular metallic waveguide. The OAM mode ℓ = 1 is generated by combination of two TE21 modes inside a circular metallic waveguide. The resulting electrical field distribution and the radiation patterns evidence the properties of waves carrying OAM. The influences of the horn structure on the properties of the generated OAM waves are also studied. © 2015 IEEE.

Keywords: Angular momentum; Circular waveguides; Directional patterns (antenna); Momentum; Waveguides; Circular metallic waveguide; Electrical field distributions; Horn structures; Orbital angular momentum; Horn antennas

Domains: Computer Science [cs]; Networking and Internet Architecture [cs.NI]; Engineering Sciences [physics]; Electronics

W.L. Wei, K. Mahdjoubi, C. Brousseau, O. Emile. Generation of radio orbital angular momentum (OAM) waves with circular metallic waveguide. Asia-Pacific Microwave Conference, APMC 2015, Dec 2015, New Delhi, India. pp.7413479, ⟨10.1109/APMC.2015.7413479⟩. ⟨hal-01368120⟩