Applied Sciences

Journal Browser

► Journal Browser

Recent Advances in Reflectarray and Transmitarray Antennas

Share This Special Issue

Special Issue Editors

Dr. Michele Beccaria

E-Mail Website
Guest Editor

Department of Electronics and Telecommunications (DET), Politecnico di Torino, Italy
Interests: reflectarray antennas; transmitarray antennas; conformal antennas; smart electromagnetic skins; optimization; additive manufacturing; beam scanning; passive array antennas

Prof. Dr. Paola Pirinoli

E-Mail Website
Guest Editor

Department of Electronics and Telecommunications, DET Politecnico di Torino, Corso Duca Degli Abruzzi 24, 1024 Turin, Italy
Interests: microwave; antennas; numerical methods; electromagnetic field; THz science
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

In recent years, new scenarios have emerged where applications such as 5G/6G communication systems, small satellites, satcom on the move, and automotive and surveillance radar have driven the demand for advanced antenna technologies with enhanced performance. The operating frequency bands have shifted from microwave to millimeter waves, often requiring wideband or multi-band coverage. Additionally, many applications necessitate multi-beam or beam-scanning capabilities.

Reflectarray (RA) and transmitarray (TA) antennas have been proposed for these applications due to their versatility in meeting the aforementioned requirements. These antennas offer several advantages, including planar and curved structures, low cost, ease of manufacturing, high efficiency, and the capability to control amplitude, phase, and polarization.

The aim of this Special Issue is to gather new advancements on this topic, focusing on the design and implementation of reflectarray and transmitarray antennas and their novel applications. In this context, authors are invited to submit their contributions on various topics, including but not limited to the following:

Passive/active reflectarray design;
Passive/active transmitarray design;
Flexible and/or curved RA/TA design;
Dielectric RAs/TAs;
New technologies for reflectarray/transmitarray realization;
Optimization techniques applied to the design of RAs and/or TAs;
New applications of RAs and TAs;
State-of-the-art and survey articles within the aims and scope of application.

Dr. Michele Beccaria
Prof. Dr. Paola Pirinoli
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Applied Sciences is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Benefits of Publishing in a Special Issue

Ease of navigation: Grouping papers by topic helps scholars navigate broad scope journals more efficiently.

Greater discoverability: Special Issues support the reach and impact of scientific research. Articles in Special Issues are more discoverable and cited more frequently.

Expansion of research network: Special Issues facilitate connections among authors, fostering scientific collaborations.

External promotion: Articles in Special Issues are often promoted through the journal's social media, increasing their visibility.

e-Book format: Special Issues with more than 10 articles can be published as dedicated e-books, ensuring wide and rapid dissemination.

Further information on MDPI's Special Issue policies can be found here.

Published Papers (2 papers)

Download All Papers

Order results

Result details

Show export options Show export options

Select all

Export citation of selected articles as:

Research

13 pages, 2978 KiB

Open AccessArticle

Compact Beam-Scanning Reflectarray Antenna with SLL Reduction Using In-Plane Panel Translations

by Andrés Gómez-Álvarez, Sérgio A. Matos, Manuel Arrebola, Marcos R. Pino and Carlos A. Fernandes

Appl. Sci. 2025, 15(8), 4244; https://doi.org/10.3390/app15084244 - 11 Apr 2025

Viewed by 122

Abstract

A mechanical beam-scanning reflectarray (RA) antenna is presented for Ka band. The 1D steering of the beam is achieved through linear in-plane panel translations, which can be implemented at low cost using a rail-mounted moving RA panel. Compared to related works, a highly uniform beam level is achieved with a remarkably compact antenna profile. A new technique is also proposed to mitigate the high side lobes caused by the compact antenna optics, achieving an estimated 2.3 dB reduction in maximum SLL. The manufactured prototype has a panel size of 256.4 by 187.2 mm with 2898 elements, and an

F / D

of only 0.47. A measured scan loss of 1.1 dB is achieved over a 45-degree scanning range. The measured gain is 31.6 dBi and the aperture efficiency is 24.7% at the design frequency of 29.5 GHz, with SLL between −9.4 and −17.5 dB. In-band measurements show a 1 dB bandwidth from 28 to over 32 GHz (11.9%). Full article

(This article belongs to the Special Issue Recent Advances in Reflectarray and Transmitarray Antennas)

► Show Figures

Figure 1

16 pages, 1528 KiB

Open AccessArticle

1-Bit Reconfigurable Transmitarray Antenna with Out-of-Band RCS Reduction

by Binchao Zhang, Fan Yang, Shenheng Xu, Maokun Li and Weidong Hu

Appl. Sci. 2024, 14(23), 11443; https://doi.org/10.3390/app142311443 - 9 Dec 2024

Viewed by 975

Abstract

Stealth reconfigurable transmitarray antennas (RTAs) are essential components in wireless communication and radar detection systems. Therefore, in this study, we propose a 1-bit RTA with out-of-band radar cross-section (RCS) reduction. The antenna consists of an absorptive frequency selective transmission (AFST) layer and RTA layer separated by air. Specifically, the AFST layer achieves out-of-band RCS reduction and in-band transmission utilizing the first three resonant modes of a bent metallic strip with a centrally loaded resistor. Meanwhile, the RTA layer adopts a receiver–transmitter structure with an active receiving dipole and a passive orthogonal transmitting dipole. 1-bit phase shift is achieved by alternating two pin diodes integrated on the active dipole to reverse its current direction. To evaluate the proposed design, a 16 × 16-element prototype was designed, fabricated, and measured. For scattering, the bandwidth of 10 dB RCS reduction was about 52.5% and 43.8%, respectively. For radiation, the measured gain was 20.1 dBi at 7.5 GHz, corresponding to an aperture efficiency of 12.7%. The gain loss of beam scans to ±60° was about 5 dB in both two principal planes. Full article

(This article belongs to the Special Issue Recent Advances in Reflectarray and Transmitarray Antennas)

► Show Figures

Journal Menu

Journal Browser

Recent Advances in Reflectarray and Transmitarray Antennas

Share This Special Issue

Special Issue Editors

Special Issue Information

Keywords

Benefits of Publishing in a Special Issue

Published Papers (2 papers)

Research

Further Information

Guidelines

MDPI Initiatives

Follow MDPI