Design of a Wideband Circularly Polarized Millimeter-Wave Antenna With an Extended Hemispherical Lens

Wang, Kai Xu; Wong, Hang

doi:10.1109/tap.2018.2841414

Cited by 72 publications

(25 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…1c). This shape improves the bandwidth and transmission with respect to the standard rectangular-grating used in [2], and enables the fabrication with standard milling techniques at frequencies higher than 100 GHz. 1D gratings in any dielectric material originate different effective for the electric fields polarized parallel and perpendicularly with respect to the 1D structure invariant direction.…”

Section: Polarizer Geometry and Fabricationmentioning

confidence: 99%

See 1 more Smart Citation

Dielectric-Grating In-Lens Polarizer for Beyond 5G Communications

Campo

Carluccio

Blanco

et al. 2019

2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)

View full text Add to dashboard Cite

Section: Polarizer Geometry and Fabricationmentioning

confidence: 99%

“…1a). Based on the dielectric gratings concept [2], a broadband optimized polarizer has been designed to be integrated inside the lens. Both lens and polarizer are manufactured in plastic material (HDPE and Topas ® , with dielectric permittivity 2.3), enabling low-cost fabrication.…”

Section: Introduction and Conceptmentioning

confidence: 99%

Dielectric-Grating In-Lens Polarizer for Beyond 5G Communications

Campo

Carluccio

Blanco

et al. 2019

2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)

View full text Add to dashboard Cite

“…3-D printing, also known as additive manufacturing, has offered a new and economical way to build the lenses and transmitarrays. Various kinds of lenses have been proposed using additive manufacturing [27][28][29][30][31][32][33][34][35][36][37][38][39][40]. Nevertheless, most of them are dielectric-based.…”

Section: Introductionmentioning

confidence: 99%

Additively Manufactured Millimeter-Wave Dual-Band Single-Polarization Shared Aperture Fresnel Zone Plate Metalens Antenna

Zhu

Yang

et al. 2021

IEEE Trans. Antennas Propagat.

View full text Add to dashboard Cite

Fresnel zone plate (FZP) lens antenna, consisting of a set of alternative transparent and opaque concentric rings arranged on curvilinear or flat surfaces, have been widely used in various fields for sensing and communications. Nevertheless, the state-of-art FZP lens antennas are limited to a single band due to the frequency-dependent feature, which hinders their use in multiband applications. In this work, a shared-aperture dual-band FZP metalens antenna is proposed by merging two single-band FZP metalens antenna operating at distinct frequency bands seamlessly into one. Instead of using conventional metallic conductors, double-screen meta-grids are devised in this work to form the concentric rings. Because the meta-grids show distinct transmission/reflection properties at different frequencies, the performance of one set of concentric rings operating at the one band will not be affected by the other operating at the different band. In addition, to compensate for the phase shift introduced by the meta-grids, an additional dielectric ring layer is added atop the FZP taking advantage of additive manufacturing. Thus, the radiation performance of the dual-band FZP lens antenna is comparable to that of each single FZP metalens antenna. For proof-of-concept, an antenna prototype operating at the dualband, 75 GHz and 120 GHz with a frequency ratio of 1.6, is fabricated using an integrated additively manufactured electronics (AME) technique. The measured peak gains of 20.3 dBi and 21.9 dBi are achieved at 75 GHz and 120 GHz, respectively.

show abstract

“…Their working principle is based on the effective dielectric permittivity anisotropy originated by the asymmetric dielectric gratings, which results in different propagations constants for orthogonal LP field components. The examples proposed in the literature are mostly based on rectangular gratings, either in low relative permittivity for mm-wave applications [14], [15] or in high relative permittivity in optics [20], [21]. Whereas high relative permittivity gratings present lower profile and smaller bandwidth, the opposite properties appear for low relative permittivity polarizers, leading to high aspect ratios which encumber their manufacturing at frequencies higher than 100 GHz.…”

Section: Introductionmentioning

confidence: 99%