OAM Mode-Group Generation Method: Partial Arc Transmitting Scheme

TL;DR

This paper introduces a novel partial arc transmitting scheme using a curved waveguide leaky-wave antenna to generate high-order OAM mode-groups at 60 GHz, enabling advanced communication and radar applications.

Contribution

It proposes a partial slotting design for OAM mode-group generation, differing from traditional full aperture methods, and demonstrates high gain beams with helical phase distribution.

Findings

Generated OAM MGs with high equivalent order of ±40 at 60 GHz

Achieved high gain beams with helical phase distribution

Potential for applications in next-generation communication and radar systems

Abstract

A partial slotted curved waveguide leaky-wave antenna which can generate orbital angular momentum (OAM) mode-groups (MG) with high equivalent OAM order negative and positive 40 at 60 GHz is proposed in this paper. The proposed antenna with partial slotting is designed according to the circular traveling-wave antenna which can generate single conventional OAM wave, so it can be regarded as partial arc transmitting (PAT) scheme compared with the full 2pi aperture slotting of the circular traveling-wave antenna. The full-wave simulation results show that the generated OAM MGs present a high gain beam with a helical phase distribution. This method may lead to novel applications for next generation communication and radar system.