Experimentally Validated, Wideband, Compact, Oam Antennas Based on Circular Vivaldi Antenna Array

Yang, Tianming; Yang, Dan; Wang, Boning; Hu, and Jianzhong

doi:10.2528/pierc17110702

Cited by 6 publications

(5 citation statements)

References 3 publications

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“…Fig. 11(a) shows a compact broadband Vivaldi antenna array [88], in which eight Vivaldi antenna elements are folded sequentially to form a hollow cylinder, which can generate a vortex with a mode number of 0, ±2 at 2.70-2.90 GHz rotating electromagnetic waves. The horn antenna has good radiation directivity and high gain, so it is often used as an array antenna unit.…”

Section: Fig 9 Electrical Dipole and Bow-array Antennamentioning

confidence: 99%

Retracted: Design and Performance Evaluation of OAM-Antennas: A Comparative Review

Saraereh

2023

IEEE Access

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For many communication systems, including wireless networks, mobile, satellite, radar, remote sensing, and many more applications, antenna arrays are very necessary. Utilizing effective beamforming techniques, antenna arrays have recently played a major part in driving data rates and system capacity to extremely high levels. The beamforming capabilities and system performance are both greatly influenced by the array configuration. Numerous array structures, including linear, two-dimensional, circular, conical, cylindrical, spherical, and even non-uniform array shapes, can be used in different applications. Modern communication systems pay a lot of attention to reconfigurable antennas because of the many applications they may serve and the added functionality they provide. A single structure that has the ability to change between one or a number of features, such as frequency, pattern, and polarization, is referred to as a reconfigurable antenna. Utilizing a specific circular phased microstrip antenna array, the orbital angular moment (OAM) vortex electromagnetic wave is created, allowing for more effective and dependable data transmission. When propagating, the vortex electromagnetic wave has a spiral phase wavefront structure, and its many OAM modes are orthogonal to one another. The helical antenna offers the benefits of light weight, small size, and excellent circular polarization when compared to other OAM radio producing techniques. This paper reviews various state-of-the-art antennas for 5G applications. Specifically, the single microstrip, array, traveling wave and metasurface antennas have been discussed and their important aspects were elaborated. Finally, the applications and future prospects were described.

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Section: Fig 9 Electrical Dipole and Bow-array Antennamentioning

confidence: 99%

Retracted: Design and Performance Evaluation of OAM-Antennas: A Comparative Review

Saraereh

2023

IEEE Access

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“…This enables the antenna array to generate OAM beams with mode +2 in the 8-16 GHz range. According to reference [28], when using circular array to generate OAM beams, a matching phase-shifting feeding network must be developed. Narrowband phase-shifting networks can only produce OAM modes in a narrow frequency range.…”

Section: B Antenna Structurementioning

confidence: 99%

“…As a result, the receiving antenna needs the bigger aperture in order to receive the OAM beam. To address these issues, the concept of plane spiral orbital angular momentum (PS-OAM) has been proposed [28].…”

Section: Introductionmentioning

confidence: 99%

A New Antenna Capable of Generating Broadband Plane Spiral Orbital Angular Momentum

Li,

Feng,

et al. 2024

IEEE Access

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The plane spiral orbital angular momentum (PS-OAM), which is a special form of orbital angular momentum (OAM) beams, solves the problem of OAM beam divergence to some extent. The majority of OAM antennas can only generate vortex beams in a narrow band range, which severely limits their broadband application potential. This study proposed a single antenna that can produce PS-OAM beams in the 8-16 GHz frequency range. The antenna is composed of six Vivaldi antennas placed in a tangential circular array, and the ports of the neighboring Vivaldi antenna elements exhibit phase difference. When fed with equal phase and amplitude, the antenna can generate broadband PS-OAM beams with mode +2. In contrast to current OAM antenna arrays fed with phase-shifting, the suggested antenna is straightforward and simple to feed. The proposed Vivaldi antenna based on UCA may provide a new way for generating broadband OAM beams.INDEX TERMS Plane spiral orbital angular momentum (PS-OAM), Vivaldi antenna, phase errors, circular array, broadband antenna.

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“…But the bandwidth is obtained under ideal feeding conditions [13]. In addition, array antennas with different array element forms are also proposed to generate vortex electromagnetic waves, such as Vivaldi antenna [14], horn antenna [15], single arm helical antenna [16], etc.…”

Section: Introductionmentioning

confidence: 99%

Analysis and Design of Broadband OAM Array Antenna

Zhang,

Zhao,

et al. 2023

ACES Journal

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This paper presents a Uniform Circular Array (UCA) antenna of crossed-dipole that can excite vortex waves in a wide frequency range from 3.5 GHz to 8.4 GHz. In the design process, the theoretical derivation of the influence on the Orbital Angular Momentum (OAM) when the antenna elements are arrayed in Co-directional Antenna Array (CAA) and Rotational Antenna Array (RAA) is given respectively. The fixed mode of the dipoles CAA is achieved by feeding each element with equal amplitude and 90∘ phase difference produced by the broadband feeding network. Furthermore, the proposed broadband OAM array antenna has been fabricated and measured to verify the predicted properties. The vortex electromagnetic wave with +1 mode could be excited in the bandwidth of 82.35%. Simulated and measured results are in good agreement. The proposed OAM array antenna is simple in design principle, compact in structure and low in profile, making this array antenna an excellent candidate for broadband OAM communication systems.

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Experimentally Validated, Wideband, Compact, Oam Antennas Based on Circular Vivaldi Antenna Array

Cited by 6 publications

References 3 publications

Retracted: Design and Performance Evaluation of OAM-Antennas: A Comparative Review

Retracted: Design and Performance Evaluation of OAM-Antennas: A Comparative Review

A New Antenna Capable of Generating Broadband Plane Spiral Orbital Angular Momentum

Analysis and Design of Broadband OAM Array Antenna

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