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Compact dual-band millimeter-wave antenna for 5G WLAN

Published online by Cambridge University Press:  26 August 2021

Melvin Chamakalayil Jose*
Affiliation:
Electronics and Communication Engineering, Sri Sivasubramaniya Nadar College of Engineering, Anna University, Chennai, India
Sankararajan Radha
Affiliation:
Electronics and Communication Engineering, Sri Sivasubramaniya Nadar College of Engineering, Anna University, Chennai, India
Balakrishnapillai Suseela Sreeja
Affiliation:
Electronics and Communication Engineering, Sri Sivasubramaniya Nadar College of Engineering, Anna University, Chennai, India
Mohammed Gulam Nabi Alsath
Affiliation:
Electronics and Communication Engineering, Sri Sivasubramaniya Nadar College of Engineering, Anna University, Chennai, India
Pratap Kumar
Affiliation:
Electronics and Communication Engineering, Sri Sivasubramaniya Nadar College of Engineering, Anna University, Chennai, India
*
Author for correspondence: Melvin Chamakalayil Jose, E-mail: [email protected]

Abstract

This paper presents a novel compact dual-band printed antenna with an omnidirectional radiation pattern for 5G WLAN. The antenna element comprises a star-shaped patch with six disc-shaped elements at the top and a defected ground structure at the bottom, having a radius of 3.77 mm for both. The proper feeding point and alignment with its element parameters help to achieve good impedance matching. The proposed antenna has a single center feed, a low profile, and a straightforward compact structure without any feeding complexity. A high reception fidelity antenna with comparable bandwidth and moderate gain is presented. The prototype radiator was printed on a 4 mm radius and a 1.6 mm thick dielectric substrate (Rogers RT/Duroid 5880), with a dielectric constant of 2.2. The designed antenna is fabricated and measured to validate the simulation result. The measured impedance bandwidth of 1.3 GHz (27.5–28.8 GHz) and 2.2 GHz (32.45–34.65 GHz) with a respective measured gain of 1.1 and 3.2 dBi are achieved at 28 and 34 GHz. The simulated radiation efficiency of above 95% is achieved for both bands. A good agreement between simulated and measured results of the proposed work shows that the proposed antenna is suitable for 5G short-range WLAN communications.

Type
Antenna Design, Modelling and Measurements
Copyright
Copyright © The Author(s), 2021. Published by Cambridge University Press in association with the European Microwave Association

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