Multiplexed OAM Wave Communication With Two-OAM-Mode Antenna Systems

Liu, Dandan; Gui, Liangqi; Zhang, Zixiao; Chen, Han; Song, Guochao; Jiang, Tao

doi:10.1109/access.2018.2886553

Cited by 43 publications

(20 citation statements)

References 33 publications

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“…At the transmitter side of an OAM link, generally, an antenna with a feed network generates two (as in [9]) or higher number of independent modes [8], [10]. This is generally achieved by fixed phase shifter-based feed networks.…”

Section: Introductionmentioning

confidence: 99%

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Physical Layer Secure Communication Using Orbital Angular Momentum Transmitter and a Single-Antenna Receiver

Abbasi

Fusco

Naeem

et al. 2020

IEEE Trans. Antennas Propagat.

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Orbital Angular Momentum (OAM) for radio communications has the potential of simultaneously transmitting multiple signals at the same frequency and time resources. This multiplies the achievable channel capacity at a given bandwidth by increasing the available number of simultaneous data streams. One downside of OAM radio communication is the requirement of multi-mode radio frequency (RF) hardware at both ends of a link i.e. transmitter as well as the receiver. This is not always practically viable, especially as we move towards low profile receivers in future communication devices. In this work, we present a novel method of OAM-based radio communication with enhanced physical layer security that requires only a single antenna receiver. We first present the system architecture, then we design and realize a Rotman lens-based circular antenna array transmitter operating at 5.8 GHz. We then experimentally verify the capability of the hardware to create multiple modes. As a proof-of-concept, we propose a communication system that simultaneously uses mode 0 and +1 of the OAM beamformer and in doing so show how a single receive antenna can be used for data recovery. We first identify a general analogue modulation expression and use the proposed system to transmit digitally modulated data stream to a single antenna equipped receiver. A pre-communication training sequence is required to realize the proposed approach. Experimental results verify the simulated predictions.

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Section: Introductionmentioning

confidence: 99%

“…One of the key bottlenecks in the successful realization of OAM communication is the position of nulls at the boresight of transmitter antenna array [3], [5], [9]- [11], [21], [22]. This limits the coverage area to a doughnut-shape sector especially when we look at the radiation of higher modes.…”

Section: Introductionmentioning

confidence: 99%

Physical Layer Secure Communication Using Orbital Angular Momentum Transmitter and a Single-Antenna Receiver

Abbasi

Fusco

Naeem

et al. 2020

IEEE Trans. Antennas Propagat.

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show abstract

“…The spiral phase plate (SPP) is widely used to generate OAM microwave/mm waves due to its simple structure, but it can only produce the fixed OAM state . Antenna arrays are also often used to radiate multimode OAM waves by controlling the phase of each antenna element, but the complex feed system is required . Recently, a millimeter‐wave antenna with dual OAM modes has been constructed, which can simultaneously generate two oppositely rotated OAM states .…”

Section: Introductionmentioning

confidence: 99%

“…[6][7][8] Antenna arrays are also often used to radiate multimode OAM waves by controlling the phase of each antenna element, but the complex feed system is required. [9][10][11][12] Recently, a millimeter-wave antenna with dual OAM modes has been constructed, which can simultaneously generate two oppositely rotated OAM states. 13 The vortex waves can also be conveniently implemented by using a circular traveling wave antenna or a dielectric resonator antenna.…”

Section: Introductionmentioning

confidence: 99%

Implementing orbital angular momentum modes using single‐fed rectangular patch antenna

Zhu

et al. 2020

Int J RF Microw Comput Aided Eng

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Wireless transmission based on orbital angular momentum (OAM) can improve spectrum utilization, but it requires effective OAM mode generation. Using the characteristic mode analysis, it is easy to obtain degenerate mode distributions of the symmetric rectangular patch. The coupling phase difference of 90° between two degenerate modes can be implemented by disrupting the symmetry. In that case, a single feed structure located at the common position of equal mode current amplitudes can excite two degenerate modes to synthesize OAM modes. When the fundamental degenerate modes of the rectangular patch antenna are used, only the field component along the beam direction has the characteristics of the first order OAM. To achieve higher order OAM modes, the patch structure should be further adjusted. By introducing slots in the patch edges and grounding the patch at its center, the single‐fed rectangular patch antenna can radiate the vortex wave carrying the second order OAM. Furthermore, the OAM mode performance such as mode purity can be analyzed by the modal excitation coefficients.

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“…(4). Antenna arrays: this generation method requires complex phase shift network to ensure the phase relationship among different radiation units [21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Novel Method for Generating Electromagnetic Vortex Wave

Zheng¹,

Sun²,

Gong³

2019

PIER M

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Electromagnetic (EM) vortex wave carries orbital angular momentum (OAM), which has been proposed for improve anti-interference performance, spectral efficiency, and message capacity in radio communications. Multiple sub-channels of propagation are achieved by different twisting degrees of EM wave. In order to develop the theory and technique of the OAM, works must be done to study the generation of vortex wave. There exist several devices to generate vortex wave, such as phase plate, holographic diffraction gratings, spiral reflectors, and antenna arrays. In this paper, based on typical parabolic antenna, a new approach to generate vortex wave carrying OAM in radio frequency through coating specific controllable complex dielectric constant material on parabolic antenna is introduced. From the results of the proposed antenna, we conclude that parabolic antenna with materials arranged by a specific rule on the reflector has capacity of generating an EM wave with clockwise and anticlockwise phase distributions around beam-axis. The new method generating OAM is simple and suitable to be well applied in wireless electronic technology.

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Multiplexed OAM Wave Communication With Two-OAM-Mode Antenna Systems

Cited by 43 publications

References 33 publications

Physical Layer Secure Communication Using Orbital Angular Momentum Transmitter and a Single-Antenna Receiver

Physical Layer Secure Communication Using Orbital Angular Momentum Transmitter and a Single-Antenna Receiver

Implementing orbital angular momentum modes using single‐fed rectangular patch antenna

Novel Method for Generating Electromagnetic Vortex Wave

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