A Dual Band Substrate Integrated Waveguide Antenna with DRA for 5G Mobile Application

Agilesh Saravanan Ramamoorthi; Bendalam Alekhya; Ch Amarnatha Sarma; Sudha Rani V; Yalavarthi Usha Devi; Boddapati T P Madhav

doi:10.51173/jt.v8i2.2896

Authors

Agilesh Saravanan Ramamoorthi Antennas and Liquid Crystals Research Center, Koneru Lakshmaiah Education Foundation, Guntur, Andhra Pradesh-522302, India
Bendalam Alekhya Department of Electronics and Communication Engineering, Vallurupalli Nageswar Rao Vignana Jyothi Institute of Engineering and Technology (VNRVJIET), Hyderabad-500090, India
Ch Amarnatha Sarma ECE Department, Geethanjali Institute of Science & Technology, Nellore, India
Sudha Rani V School of CS&AI, SR University, Warangal, Telangana, India
Yalavarthi Usha Devi Antennas and Liquid Crystals Research Center, Koneru Lakshmaiah Education Foundation, Guntur, Andhra Pradesh-522302, India
Boddapati T P Madhav Antennas and Liquid Crystals Research Center, Koneru Lakshmaiah Education Foundation, Guntur, Andhra Pradesh-522302, India

DOI:

https://doi.org/10.51173/jt.v8i2.2896

Keywords:

Dual Band, Dielectric Resonator, Mobile Applications, 5G, Substrate Integrated Waveguide

Abstract

This paper describes the design, evaluation, and investigational validation of a dual-band Substrate Integrated Waveguide (SIW) supported Dielectric Resonator Antenna (DRA) for fifth-generation (5G) applications. The designed antenna is realized on a Rogers RT/duroid 5880 substrate (εr = 2.2, tanδ = 0.003, thickness = 1.2 mm) and excited by a microstrip-fed SIW structure. A cubic Dielectric Resonator (DR) with dimensions of 5.2 × 5.2 × 5.2 mm³ and dielectric constant of 9.9 is positioned over a modified H-shaped slot engraved on the SIW cavity. The proposed modified-H-shaped slot serves as a magnetic-coupling aperture, enabling controlled excitation of multiple resonant modes and facilitating dual-band operation at 28 GHz/38 GHz in the Ka band. The designed antenna achieves a measured impedance bandwidth of 12.12% (26.02–30.26 GHz), a realized gain of 7.1 dBi, and a radiation efficiency of 84.2% at 28 GHz. When operated at 38 GHz, it displays a bandwidth of 8.95% (37.01–40.07 GHz), a maximum gain of 7.28 dBi, and a radiation efficiency of 81.9%. Moreover, the proposed antenna exhibits circular polarization with an axial ratio below 3 dB at both operating frequencies, enabled by the combined contributions of the altered H-slot and the dielectric resonator. The antenna is constructed and optimized using a full-wave electromagnetic simulator (CST Microwave Studio), and its performance is well-matched between simulation and measurement results. The new SIW-DRA structure is seen to improve several parameters as compared to the SIW slot antennas.

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Author Biographies

Agilesh Saravanan Ramamoorthi, Antennas and Liquid Crystals Research Center, Koneru Lakshmaiah Education Foundation, Guntur, Andhra Pradesh-522302, India

Dr. Agilesh Saravanan Ramamoorthi is working as Assistant Professor in department of ECE, Koneru Lakshmaiah Education Foundation.

Bendalam Alekhya, Department of Electronics and Communication Engineering, Vallurupalli Nageswar Rao Vignana Jyothi Institute of Engineering and Technology (VNRVJIET), Hyderabad-500090, India

Dr. Bendalam Alekhya is working as Assistant Professor in the department of ECE, Vallurupalli Nageswar Rao Vignana Jyothi Institute of Engineering and Technology.

Ch Amarnatha Sarma, ECE Department, Geethanjali Institute of Science & Technology, Nellore, India

Dr. Ch Amarnatha Sarma is working as Associate Professor in the department of ECE, Geethanjali Institute of Science & Technology.

Sudha Rani V, School of CS&AI, SR University, Warangal, Telangana, India

Dr. Sudha Rani V is working as Assistant Professor in department of ECE, SR University, Warangal.

Yalavarthi Usha Devi, Antennas and Liquid Crystals Research Center, Koneru Lakshmaiah Education Foundation, Guntur, Andhra Pradesh-522302, India

Dr. Usha Devi Yalavarthi is working as Associate Professor in the department of ECE, Koneru Lakshmaiah Education Foundation.

Boddapati T P Madhav, Antennas and Liquid Crystals Research Center, Koneru Lakshmaiah Education Foundation, Guntur, Andhra Pradesh-522302, India

Dr. Boddapati T P Madhav is working as Professor in department of ECE, Koneru Lakshmaiah Education Foundation.

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