Circular Polarized Patch Antenna Generating Orbital Angular Momentum
By M. Barbuto, F. Trotta, Filiberto Bilotti, Alessandro Toscano. 2014
152 citations recorded by the source corpus.
The recent extension of the orbital angular momentum (OAM) concept from optical to microwave frequencies has led some researchers to explore how well established antenna techniques can be used to radiate a non-zero OAM electromagnetic fleld. In this frame, the aim of the present paper is to propose a new approach to generate a non-zero OAM fleld through a single patch antenna. Using the cavity model, we flrst analyze the radiated fleld by a standard circular patch and show that a circular polarized (CP) TMnm mode excited by using two coaxial cables generates an electromagnetic fleld with an OAM of order §(ni1). Then, in order to obtain a simpler structure with a single feed, we design an elliptical patch antenna working on the right-handed (RH) CP TM21 mode. Using full-wave simulations and experiments on a fabricated prototype, we show that the proposed antenna efiectively radiates an electromagnetic fleld with a flrst order OAM. Such results prove that properly designed patch antennas can be used as compact and low-cost generators of electromagnetic flelds carrying OAM.
Subfields: Aerospace Engineering, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials
View Paper: https://www.semanticscholar.org/paper/94adc6951e0562fca5ff69c411ebf3367e006b18
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In Aerospace Engineering
In Atomic and Molecular Physics, and Optics
In Electronic, Optical and Magnetic Materials
Citations in the corpus
- Photon Spin Hall Effect-Based Ultra-Thin Transmissive Metasurface for Efficient Generation of OAM Waves (2019, methodology): “order modes in circular patch antennas were also utilized for generation of OAM waves [18].”
- Radial Uniform Circular Antenna Array for Dual-Mode OAM Communication (2017, background): “Variable spiral phase plates structures, travelingwave slot antennas, and single patch antennas are designed to generate favorable OAM beams in radio domain [5]–[9], and some twisted parabolic antennas fabricated in different approaches are proposed for high directivity [3], [10], but it may not be ”
- Ultrathin Complementary Metasurface for Orbital Angular Momentum Generation at Microwave Frequencies (2016, methodology): “In [16], a patch antenna was well designed to radiate circularly polarized wave with different orders of OAM.”