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Advanced Antennas and Microwave Technologies

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A special issue of Sensors (ISSN 1424-8220). This special issue belongs to the section "Communications".

Deadline for manuscript submissions: 31 December 2026 | Viewed by 1138

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Special Issue Editor

Dr. Naser Ojaroudi Parchin

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Guest Editor

School of Engineering and the Built Environment, Edinburgh Napier University, Edinburgh EH10 5DT, UK
Interests: MIMO/diversity antennas; 5G/6G antennas; MM-wave phased arrays; multi-band/UWB antennas; RFID antennas; metamaterials and metasurfaces; Fabry resonators; fractal antennas; band-pass/band-stop microwave filters; reconfigurable structures; power amplifiers; electromagnetic wave propagation
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Special Issue Information

Dear Colleagues,

Wireless communication technologies continue to advance rapidly to support a wide range of applications, including next-generation mobile networks, sensing systems, and emerging intelligent platforms. Antennas and microwave technologies play a fundamental role in enabling modern wireless communications, from physical-layer hardware to system-level performance.

This Special Issue aims to present recent research and developments in antennas and microwave technologies for wireless communications. It covers theoretical, numerical, and experimental studies related to antennas, microwave and RF components, propagation and channel modeling, signal processing, and wireless system implementation. Contributions addressing both established and emerging wireless technologies and applications are welcome.

The objective of this Special Issue is to provide a broad forum for researchers and practitioners to share innovative ideas, methodologies, and practical solutions that contribute to the advancement of wireless communication systems.

Suggested Topics

Antenna theory, design, and optimization
Microwave and RF components
Phased-array antennas and beamforming
MIMO and massive MIMO systems
Millimeter-wave and terahertz technologies
Signal processing for wireless communications
Wireless propagation and channel modeling
Reconfigurable and intelligent antenna systems
Metasurfaces and metamaterial-based devices
AI-assisted antenna and RF design
Integrated sensing and communication
4G/5G/6G antennas and microwave technologies
Wearable and body-centric wireless technologies
Advanced materials and fabrication techniques
Measurement, testing, and experimental validation

Dr. Naser Ojaroudi Parchin
Guest Editor

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Keywords

antenna
microwave
wireless communication

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Published Papers (2 papers)

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Research

11 pages, 12310 KB

Open AccessCommunication

Dual Polarization 2 × 2 Array Ku-Band Antenna with Improved Polarization Purity

by Tae-Hak Lee, Hyungseok Nam, Jungwon Seo, Sangyoon Lee, Kwonki Hong and Seongmin Pyo

Sensors 2026, 26(8), 2435; https://doi.org/10.3390/s26082435 - 15 Apr 2026

Viewed by 355

Abstract

This letter presents a Ku-band 2 × 2 patch array antenna that supports dual-polarization operation using a simple cooperative feed network. Depending on the selected input port of the proposed simple feed network, the 2 × 2 array antenna radiates either vertically or horizontally polarized waves. The proposed feed structure consists of two serially connected power dividers placed on the same geometrical plane, enabling dual-polarization without additional multilayer routing. The microstrip line-based feed network also enables a 180° reversed placement of the radiating elements thereby improving the cross-polarization ratio of the proposed array antenna, achieving better than 30 dB across the operating band. The fabricated antenna, designed for a center frequency of 14.9 GHz with a 6.8% fractional bandwidth, demonstrates a realized gain higher than 10 dB for both polarization modes. Measurement results in terms of the input impedance bandwidth, isolation, gain, and cross-polarization ratio are in good agreement with simulation results. Full article

(This article belongs to the Special Issue Advanced Antennas and Microwave Technologies)

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10 pages, 58555 KB

Open AccessArticle

Circularly Polarized X-Band Fan-Beam Antenna and Its Application to Offset Reflector Systems

by Tae-Hak Lee, Sang-Gyu Lee, Sang-Burm Ryu, Seongmin Pyo and Ke Wu

Sensors 2026, 26(4), 1301; https://doi.org/10.3390/s26041301 - 17 Feb 2026

Viewed by 485

Abstract

In this letter, a circularly polarized (CP) 4 × 4 array antenna generating a fan-beam radiation pattern is presented, along with its application as the primary pattern of an offset reflector antenna. A sequentially rotated feed network is incorporated into the proposed antenna, enabling a wide axial ratio (AR) bandwidth of 1.9 GHz centered at 8.2 GHz. The proposed array antenna generates about 27.5° and 14.5° of half-power beamwidth (HPBW) in

ϕ = 0 °

and

ϕ = 90 °

planes, respectively. The fabricated antenna shows good agreement with the simulated results in terms of impedance bandwidth, gain, and radiation characteristics. Furthermore, the offset reflector antenna fed by the proposed CP array is evaluated, resulting in a gain enhancement of approximately 17 dB and a fan-beam radiation characteristic with half-power beamwidths of 3.95° and 2.15°, with an axial ratio bandwidth of 1 GHz. Full article