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Design and Application of Millimeter-Wave/Microwave Antenna Array

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

Deadline for manuscript submissions: 25 November 2025 | Viewed by 332

Special Issue Editors


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Guest Editor
School of Cyberspace Science and Technology, Beijing Institute of Technology, Beijing 100081, China
Interests: antennas; arrays and beamforming; microwave/millimeter-wave/terahertz devices and systems; microwave/millimeter-wave/terahertz communications
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
School of Electronic and Information Engineering, Beijing Jiaotong University, Beijing 100044, China
Interests: microwave/millimeter-wave antennas and arrays; leaky-wave antennas and waveguides; beam-scanning antennas

Special Issue Information

Dear Colleagues,

Millimeter-wave (MMW)/microwave communication and sensing are critical technologies for wireless data transfer and image acquisition. With the increase in operating frequency or transmission/detection range, high-gain antennas are necessary for compensating the wireless propagation losses, thus improving the received system signal-to-noise ratio. MMW/microwave antenna arrays are the more preferred solutions compared with those bulky reflector or lens antennas of large apertures, featuring light weights, low costs, and ease of fabrication. Moreover, active devices like phase shifters or PIN diodes can be integrated with the array antenna to realize rapid beam steering or reconfigurable radiation characteristics, thus allowing the beam coverage or radiation flexibility to be considerably increased, in addition to achieving high gains. In addition, utilizing antenna arrays is also helpful in increasing the capacity for MIMO communications and enhancing image resolution or target recognition for array sensors.

Because of the requirements of various emerging system applications in recent years, there are a number of new challenges or issues that need to be overcome for MMW/microwave antenna array designs. This Special Issue aims to gather novel structural designs, beamforming algorithms, and implementation techniques for MMW/microwave antenna arrays. Topics include but are not limited to the following keywords:

  • On-chip antenna arrays;
  • On-package antenna arrays;
  • Conformal antenna arrays;
  • Flexible wearable antenna arrays;
  • Shared-aperture antenna arrays;
  • Leaky wave antenna arrays;
  • Metasurface antenna arrays;
  • Beamforming algorithms.

Prof. Dr. Xiang Gao
Prof. Dr. Zheng Li
Guest Editors

Manuscript Submission Information

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Keywords

  • on-chip antenna arrays
  • on-package antenna arrays
  • conformal antenna arrays
  • flexible wearable antenna arrays
  • shared-aperture antenna arrays
  • leaky wave antenna arrays
  • metasurface antenna arrays
  • beamforming algorithms

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Published Papers (1 paper)

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Research

19 pages, 12156 KiB  
Article
Dual-Port Butterfly Slot Antenna for Biosensing Applications
by Marija Milijic, Branka Jokanovic, Miodrag Tasic, Sinisa Jovanovic, Olga Boric-Lubecke and Victor Lubecke
Sensors 2025, 25(16), 4980; https://doi.org/10.3390/s25164980 - 12 Aug 2025
Viewed by 103
Abstract
This paper presents the novel design of a printed, low-cost, dual-port, and dual-polarized slot antenna for microwave biomedical radars. The butterfly shape of the radiating element, with orthogonally positioned arms, enables simultaneous radiation of both vertically and horizontally polarized waves. The antenna is [...] Read more.
This paper presents the novel design of a printed, low-cost, dual-port, and dual-polarized slot antenna for microwave biomedical radars. The butterfly shape of the radiating element, with orthogonally positioned arms, enables simultaneous radiation of both vertically and horizontally polarized waves. The antenna is intended for full-duplex in-band applications using two mutually isolated antenna ports, with the CPW port on the same side of the substrate as the slot antenna and the microstrip port positioned orthogonally on the other side of the substrate. Those two ports can be used as transmit and receive ports in a radar transceiver, with a port isolation of 25 dB. Thanks to the bow-tie shape of the slots and an additional coupling region between the butterfly arms, there is more flexibility in simultaneous optimization of the resonant frequency and input impedance at both ports, avoiding the need for a complicated matching network that introduces the attenuation and increases antenna dimensions. The advantage of this design is demonstrated through the modeling of an eight-element dual-port linear array with an extremely simple feed network for high-gain biosensing applications. To validate the simulation results, prototypes of the proposed antenna were fabricated and tested. The measured operating band of the antennas spans from 2.35 GHz to 2.55 GHz, with reflection coefficients of less than—10 dB, a maximum gain of 8.5 dBi, and a front-to-back gain ratio that is greater than 15 dB, which is comparable with other published single dual-port slot antennas. This is the simplest proposed dual-port, dual-polarization antenna that enables straightforward scaling to other frequency bands. Full article
(This article belongs to the Special Issue Design and Application of Millimeter-Wave/Microwave Antenna Array)
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