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Standing Electromagnetic Waves

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Suppose a sheet of a perfect conductor is placed in the yz-plane, and a linearly polarized electromagnetic wave traveling in the...

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Wideband Dual-Polarized PRGW Antenna Array with High Isolation for Millimeter-Wave IoT Applications.

Zahra Mousavirazi¹, Mohamed Mamdouh M Ali², Abdel R Sebak¹

¹Department of Electrical and Computer Engineering, Concordia University, Montreal, QC H3G 1M8, Canada.

Sensors (Basel, Switzerland)

|September 19, 2025

Summary

This study introduces a novel dual-polarized antenna for Internet of Things (IoT) applications operating at millimeter-wave frequencies. The innovative design ensures reliable, high-performance wireless connectivity for smart cities and autonomous vehicles.

Keywords:

dual polarization internet of things (IoT)magneto-electric (ME) dipole millimeter-wave (mm-wave)printed ridge gap waveguide (PRGW)

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Area of Science:

Electrical Engineering
Antenna Theory
Wireless Communications

Background:

Internet of Things (IoT) systems require robust, high-throughput wireless connectivity, especially in dense environments.
Millimeter-wave (mm-wave) frequencies offer large bandwidths but present challenges in antenna design and performance.
Existing antenna solutions often struggle with reliability and efficiency in demanding IoT applications.

Purpose of the Study:

To develop a novel dual-polarized antenna array for mm-wave IoT applications.
To enhance antenna reliability and efficiency by mitigating parasitic radiation and surface waves.
To achieve superior radiation characteristics and high isolation for interference-free operation.

Main Methods:

Utilized printed ridge gap waveguide (PRGW) technology for feed network.
Incorporated cross-shaped magneto-electric (ME) dipoles with artificial magnetic conductor (AMC) cavities.
Integrated electromagnetic bandgap (EBG) structures to suppress surface waves and back-lobe emissions.

Main Results:

Achieved a wide impedance bandwidth of 24% centered at 30 GHz.
Demonstrated exceptional dual-polarization isolation exceeding 40 dB.
Obtained a consistent gain of approximately 13.88 dBi across the operational bandwidth.

Conclusions:

The proposed PRGW antenna array meets critical IoT requirements for high data rates and low latency.
The design offers stable, high-quality wireless connectivity essential for smart cities, autonomous vehicles, and sensor networks.
Validated performance through fabrication and testing confirms suitability for advanced IoT communication systems.