Bow-Tie-Shaped Radiating Element for Single and Dual Circular Polarization

García-Marín, Eduardo; Masa‐Campos, José Luis; Tamayo‐Domínguez, Adrián; Ruiz‐Cruz, Jorge A.

doi:10.1109/tap.2019.2943357

Cited by 8 publications

(4 citation statements)

References 37 publications

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“…This means that there is a strong polarization conversion. After the simulation, it is evident from Figures 3a and 7a that the operating frequency band of the proposed polarization converter is shifted from (13-26.2 GHz) to (9)(10)(11)(12)(13)(14)(15)(16)(17)(18). It can also be tuned to higher frequencies by lowering the size of the participating unit cell.…”

Section: Parametric Variationmentioning

confidence: 98%

“…They are widely used in constructing various meta−devices, including absorbers, holograms, lenses, and sensors [12][13][14][15][16][17]. They can alter the amplitude, phase, and polarization of EM waves due to controlling the geometric parameters of the underlying unit cell, and have found potential applications in various fields, including antenna gain enhancement [18,19], radar cross−area reduction [20], and MIMO antenna isolation [21]. Polarization converters have Electronics 2022, 11, 487 2 of 13 been actively used in the microwave, terahertz, and even optical frequencies due to their unique properties in polarization manipulation and their potential for rotating EM waves.…”

Section: Introductionmentioning

confidence: 99%

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Ultrawideband Cross-Polarization Converter Using Anisotropic Reflective Metasurface

et al. 2022

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Broadband metasurface-based devices are essential and indispensable in modern wireless communication systems. This paper presents an ultra−wideband and wide incident angle reflective cross−polarization converter metasurface. The unit cell of the proposed structure is a 45° rotated anisotropic meta−sheet developed by cutting the rhombus−shaped patch from the central part of the square patch. The unit cell’s top structure and ground blocking sheet are made of copper, whereas a dielectric substrate (FR−4) is used as an intermediate spacer between them. The unit cell thickness is minimal compared to the operating wavelength (1/14λ∘, where λ∘ is the wavelength of the starting frequency of 13 GHz of the operating band). The proposed structure efficiently converts linearly polarized waves into their orthogonal component, with a polarization conversion ratio of (PCR > 90%) over a broad frequency spectrum of 13 GHz to 26 GHz. The physical origin of polarization conversion is also depicted using surface current distribution plots. An ultra−wideband and highly efficient polarization conversion (above 90%) is achieved with the help of strong electromagnetic resonance coupling between the upper and lower layer of the metasurface. This kind of ultra−wideband polarization conversion metasurface can be employed in satellite communication, radar cross−section reduction, and navigation systems.

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Section: Parametric Variationmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Ultrawideband Cross-Polarization Converter Using Anisotropic Reflective Metasurface

et al. 2022

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“…Additional features of the BCA are introduced in the following. A low-cost, circularly polarized, 3D printed feeder is pursued, as illustrated in Figure 15 d. The concept of this antenna was firstly introduced by some of the authors in [ 24 ]. It is used to radiate a circularly polarized signal by transforming the linearly polarized E-field of the main mode propagated inside a rectangular waveguide.…”

Section: Circularly Polarized Stepped Lens Antenna Fed By a Bow-tie C...mentioning

confidence: 99%

“…A pyramidal linearly polarized horn antenna feeder is optimally assembled to the lens structure in order to increase the global antenna efficiency. The second concept, suitable for 5G satellite applications at

, is a novel stepped perforated GRIN lens fed by a bow-tie cavity [ 24 ] to achieve circular polarization.…”

Section: Introductionmentioning

confidence: 99%

Beam Steering 3D Printed Dielectric Lens Antennas for Millimeter-Wave and 5G Applications

Piroutiniya,

Rasekhmanesh,

Masa-Campos

et al. 2023

Sensors

Self Cite

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Two types of cost-efficient antennas based on dielectric gradient index dielectric lens have been designed for 5G applications at . The first is a linearly polarized flat lens antenna (LP-FLA) for terrestrial 5G communications. The second is a novel circularly polarized stepped lens antenna (CP-SLA) for 5G satellite services. An efficient design method is presented to optimize and conform the lens topology to the radiation pattern coming from the antenna feeder. The LP-FLA is fed by a traditional linearly polarized pyramidal horn antenna (PHA). The CP-SLA is fed by an open-ended bow-tie waveguide cavity (BCA) antenna. This cavity feeder (BCA), using cross-sections with bow-tie shapes, allows having circular polarization at the desired frequency bandwidth. The two types of presented antennas have been manufactured in order to verify their performance by an easy, low-cost, three-dimensional (3D) printing technique based on stereolithography. The peak realized gain value for the flat (LP-FLA) and stepped (CP-SLA) lens antennas have been increased at to and , respectively, by disposing the lens structures at the appropriated distance from the feeders. Likewise, using an array of horns (PHA) or open-ended bow-tie waveguide cavity (BCA) antenna feeders, it is possible to obtain a maximum steering angle range of 20° and 35°, for a directivity over and , in the planar and stepped lens antennas, respectively.

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Bandwidth Enhancement of Comparator Applied in W-Band Circularly Polarized Monopulse Antenna

Chen,

Cao,

Zhang

et al. 2023

Antennas Wirel. Propag. Lett.

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Bow-Tie-Shaped Radiating Element for Single and Dual Circular Polarization

Cited by 8 publications

References 37 publications

Ultrawideband Cross-Polarization Converter Using Anisotropic Reflective Metasurface

Ultrawideband Cross-Polarization Converter Using Anisotropic Reflective Metasurface

Beam Steering 3D Printed Dielectric Lens Antennas for Millimeter-Wave and 5G Applications

Bandwidth Enhancement of Comparator Applied in W-Band Circularly Polarized Monopulse Antenna

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