A Design of a Small-Aperture Low-Profile Omnidirectional Conformal Antenna DOI Creative Commons
Jieying Bai, Xi Li, Ziyu Zhang

et al.

Micromachines, Journal Year: 2025, Volume and Issue: 16(2), P. 217 - 217

Published: Feb. 14, 2025

In this article, a small-aperture, low-profile, and omnidirectional conformal antenna is proposed which can be utilized on space-limited equipment platforms such as airplanes, ships, vehicles. The consists of an open metal cavity, discone antenna, parasitic structure, radome. small aperture low-profile design the cavity result in rapid narrowing bandwidth antenna. Therefore, we introduce structure that not only enlarges impedance by adding resonant point, but also used to adjust unroundness horizontal pattern. Meanwhile, with four surfaces different curvatures presented. simulation testing results demonstrate achieve VSWR less than 2 within 1.95-2.62 GHz (29.3%), minimum 0.43 radiation pattern, gain exceeding -2.2 dBi azimuthal plane. This offers advantages aperture, low profile, capability. Furthermore, resonances high frequencies adjusted through two structures, enhancing flexibility design.

Language: Английский

Broadband, Single‐Layered, and Optically Transparent Reflective Phase‐Shifting‐Surface Array for Beam Manipulation and Enhanced Wireless Communications DOI Creative Commons
Longzhu Cai, Junhe Zhou, Jiaqi Zhou

et al.

Advanced Electronic Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 27, 2025

Abstract Optically transparent electromagnetic devices play a crucial role in modern society, yet conventional optically millimeter‐wave suffer from high return loss, limited phase shift, narrow bandwidth, profile, and low optical transparency. Current materials, fabrication processes, design methodologies restrict the development of high‐performance reflective phase‐shifting‐surface arrays or reflectarrays. To address this, concept for broadband, single‐layered, reflectarray antennas is reported, which can be integrated with glass windows beam manipulation enhanced indoor signal coverage wireless communications. The proposed element employs single‐layered cyclic olefin copolymer (COC) medium as dielectric substrate, fine metal line (FML) patterns under 50 µm width to create multi‐resonant structures range broadening. This architecture combines phase‐shifting elements minimal FML low‐loss COC achieving exceptional antenna performance while ensuring Wireless communication transmission experiments validate functionality advantages fabricated reflectarray. These results substantiate immense potential broad application prospects novel material, structure, concepts methods advancing reflectarrays related systems.

Language: Английский

Citations

0
The Generation of Electromagnetic OAM Vortex Waves Using a Simple Conformal Antenna Array DOI
Zhengyi Yang, Shanxiang Wei,

Liping Shao

et al.

Microwave and Optical Technology Letters, Journal Year: 2025, Volume and Issue: 67(4)

Published: April 1, 2025

ABSTRACT This study presents a conformal antenna array without phase network for generating electromagnetic orbital angular momentum (OAM) vortex waves. The comprises power divider and array, thus excluding the required phased creating OAM waves with different modes. simulation measurement results reveal that antennas can produce modes of –1, 0, +1 by adjusting distance between antenna. Notably, measurements are consistent results. designed offers flexible method to generate Therefore, no additional electronic components introduced into device, decreasing challenges costs associated processing. has practical applications in microwave systems.

Language: Английский

Citations

0
A Design of a Small-Aperture Low-Profile Omnidirectional Conformal Antenna DOI Creative Commons
Jieying Bai, Xi Li, Ziyu Zhang

et al.

Micromachines, Journal Year: 2025, Volume and Issue: 16(2), P. 217 - 217

Published: Feb. 14, 2025

In this article, a small-aperture, low-profile, and omnidirectional conformal antenna is proposed which can be utilized on space-limited equipment platforms such as airplanes, ships, vehicles. The consists of an open metal cavity, discone antenna, parasitic structure, radome. small aperture low-profile design the cavity result in rapid narrowing bandwidth antenna. Therefore, we introduce structure that not only enlarges impedance by adding resonant point, but also used to adjust unroundness horizontal pattern. Meanwhile, with four surfaces different curvatures presented. simulation testing results demonstrate achieve VSWR less than 2 within 1.95-2.62 GHz (29.3%), minimum 0.43 radiation pattern, gain exceeding -2.2 dBi azimuthal plane. This offers advantages aperture, low profile, capability. Furthermore, resonances high frequencies adjusted through two structures, enhancing flexibility design.

Language: Английский

Citations

0