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Applied Sciences
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Advanced Technologies in Microwave and Millimeter Wave Antennas
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Advanced Technologies in Microwave and Millimeter Wave Antennas

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Electrical, Electronics and Communications Engineering".

Deadline for manuscript submissions: 20 September 2025 | Viewed by 3759

Special Issue Editors

Dr. Changfei Zhou

E-Mail Website
Guest Editor
School of Information and Communication Engineering, Dalian University of Technology, Dalian 116024, China
Interests: filter antenna; metasurface; multiband antenna
Prof. Dr. Min Li

E-Mail Website
Guest Editor
School of Microelectronics, Tianjin University, Tianjin 300072, China
Interests: MIMO antenna; base station antenna
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

This Special Issue delves into the latest advancements in antennas, focusing on their innovations and diverse applications. With recent advances in communication, there is an increasing demand for microwave devices. To maximize resource utilization and maintain good reliability, as well as to ensure its compact size and performance, it is necessary to realize multiple functions for the antenna and its metasurface. This Special Issue aims to explore cutting-edge developments in antenna design, including novel concepts, materials, manufacturing techniques, and their practical applications across communication, sensing, and imaging systems. Topics of interest include but are not limited to base station antennas, filter antennas, phased array antennas, MIMO antennas, metamaterial-based designs, beamforming technologies, and integration challenges in both microwave and millimeter-wave frequency bands.

Dr. Changfei Zhou
Prof. Dr. Min Li
Guest Editors

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Keywords

  • multiband
  • filter antenna
  • metasurface
  • base station antenna
  • MIMO antenna

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Published Papers (3 papers)

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Research

14 pages, 13813 KiB  
Article
Dual-Band Shared-Aperture Antenna with Pattern and Polarization Diversity
by Jia Cheng, Tianyu Gao, Dongpeng Han and Changfei Zhou
Appl. Sci. 2025, 15(2), 878; https://doi.org/10.3390/app15020878 - 17 Jan 2025
Viewed by 870
Abstract
This paper proposes a dual-band co-aperture antenna, which covers 2.09–11.61 GHz (9.52 GHz, 138.9%) and 21.6–29.6 GHz (8 GHz, 31%). The overall size of the proposed antenna is 0.76 × 0.76 × 0.37 λ03, where λ0 is the free [...] Read more.
This paper proposes a dual-band co-aperture antenna, which covers 2.09–11.61 GHz (9.52 GHz, 138.9%) and 21.6–29.6 GHz (8 GHz, 31%). The overall size of the proposed antenna is 0.76 × 0.76 × 0.37 λ03, where λ0 is the free space wavelength of the lowest operating frequency of 2.09 GHz. By removing the internal metal of the monopole antenna and adding a Vivaldi antenna at the bottom of the bowl monopole antenna, dual-band radiation characteristics can be achieved. A medium polarization converter is used to achieve circular polarization and improve the broadside gain in the high-frequency band. The simulation results show that the antenna has a stable omnidirectional radiation pattern in the low-frequency band and a directional radiation pattern in the high-frequency band. Full article
(This article belongs to the Special Issue Advanced Technologies in Microwave and Millimeter Wave Antennas)
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16 pages, 1569 KiB  
Article
Alternating Generalized Projection Method for Satellite Reflectarray Synthesis with Sequential Stages of Different Illuminations
by Rafael Florencio and René Escalante
Appl. Sci. 2025, 15(1), 181; https://doi.org/10.3390/app15010181 - 28 Dec 2024
Viewed by 827
Abstract
Satellite reflectarray synthesis using the intersection approach by means of algorithms of the alternating generalized projection (AGP) method to avoid trap points with sequential stages of different illuminations is presented. In this scenario, we examine two distinct sets: the set of radiation patterns [...] Read more.
Satellite reflectarray synthesis using the intersection approach by means of algorithms of the alternating generalized projection (AGP) method to avoid trap points with sequential stages of different illuminations is presented. In this scenario, we examine two distinct sets: the set of radiation patterns producible by the reflectarray and the set of radiation patterns which meet the mission’s criteria. These sets are generally non-convex. Therefore, it is expected that conventional algorithms of the method of alternating projections (MAP) converge to trap points (i.e., local minima of the distance between the involved sets). Thus, the AGP method, which takes into account the trap points, has been considered. When large reflectarrays are considered for satellite applications, several trap points can appear, producing oscillatory behavior between several trap points. A mathematical formalism which supports the idea that a reduction in the edge illumination of an antenna involves fewer trap points is described. Thus, the oscillatory behavior can be avoided by using sequential stages in the synthesis process with different edge illumination levels in each stage. In this work, we demonstrate this synthesis technique with sequential stages, using the proposed algorithm to avoid trap points. Full article
(This article belongs to the Special Issue Advanced Technologies in Microwave and Millimeter Wave Antennas)
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18 pages, 4276 KiB  
Article
The Leaky-Wave Perspective for Array-Fed Fabry–Perot Cavity and Bull’s-Eye Antennas
by Mikhail Madji, Edoardo Negri, Walter Fuscaldo, Davide Comite, Alessandro Galli and Paolo Burghignoli
Appl. Sci. 2024, 14(15), 6775; https://doi.org/10.3390/app14156775 - 2 Aug 2024
Cited by 2 | Viewed by 1226
Abstract
Two-dimensional leaky-wave antennas (LWAs) are a class of planar, traveling-wave radiators with attractive features of a low profile, ease of feeding, frequency reconfigurability of the radiation pattern, and polarization agility. Their use in conjunction with array feeders has been the subject of various [...] Read more.
Two-dimensional leaky-wave antennas (LWAs) are a class of planar, traveling-wave radiators with attractive features of a low profile, ease of feeding, frequency reconfigurability of the radiation pattern, and polarization agility. Their use in conjunction with array feeders has been the subject of various investigations in recent decades, thanks to the additional degrees of freedom provided by the presence of multiple independent sources. Here, we provide a review of some of the most recent and promising array-fed two-dimensional (2-D) LWAs, selecting a couple of the most significant structures in application, namely Fabry–Perot cavity antennas and bull’s-eye antennas, and discussing some of their recently proposed advanced features. Full article
(This article belongs to the Special Issue Advanced Technologies in Microwave and Millimeter Wave Antennas)
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